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公开(公告)号：US20210236970A1
公开(公告)日：2021-08-05
申请号：US17236084
申请日：2021-04-21
Applicant: Hollingsworth & Vose Company
Inventor： Xiaodan Zhang , Douglas M. Guimond , Carrie Liu , Nagendra Anantharamaiah , Sudhakar Jaganathan , Gerald Gadbois , Maxim Silin , Mark A. Gallimore
Abstract: Filter media including a filtration layer comprising fibers (e.g., synthetic fibers) comprising a flame retardant and related components, systems, and methods associated herewith are provided. In some embodiments, a filtration layer may include a nonwoven web (e.g., wet-laid nonwoven web) comprising fibers including a certain flame retardant that has a relatively low concentration of or is substantially free of certain undesirable and/or toxic components (e.g., halogens). In certain embodiments, the nonwoven web may also comprise a blend of fibers. For instance, in some embodiments, the nonwoven web may also comprise a blend of coarse and fine diameter synthetic fibers that impart beneficial performance properties to the filtration layer. In some embodiments, the filtration layer may be designed to have a desirable flame retardancy (e.g., F1 rating, K1 rating) and performance properties without compromising certain mechanical properties (e.g., pleatability of the media) and/or environmental attributes (e.g., relatively low toxicity). Filter media described herein may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.
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公开(公告)号：US20240375034A1
公开(公告)日：2024-11-14
申请号：US18663367
申请日：2024-05-14
Applicant: Hollingsworth & Vose Company
Inventor： Sudhakar Jaganathan , Nagendra Anantharamaiah , Maxim Silin
Abstract: Filter media comprising a pre-filter layer and related components, systems, and methods associated therewith are provided. In some embodiments, the pre-filter layer may be designed to impart desirable properties to the filter media, such as a high gamma and/or long service life, while having relatively minimal or no adverse effects on another property of the filter media that is important for a given application. For instance, a pre-filter layer may be used to improve the upstream removal of fine particulate matter, which may clog a downstream efficiency layer comprising submicron fibers and reduce filtration performance. The pre-filter layer may be configured to increase service life and/or increase the gamma of the filter media. Filter media, as described herein, may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.
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公开(公告)号：US11738295B2
公开(公告)日：2023-08-29
申请号：US17236084
申请日：2021-04-21
Applicant: Hollingsworth & Vose Company
Inventor： Xiaodan Zhang , Douglas M. Guimond , Carrie Liu , Nagendra Anantharamaiah , Sudhakar Jaganathan , Gerald Gadbois , Maxim Silin , Mark A. Gallimore
CPC classification number: B01D39/163 , B01D39/14 , B01D39/1615 , B01D39/18 , B01D39/2089 , B01D2239/0216 , B01D2239/1225 , B01D2239/1258 , B01D2239/1291
Abstract: Filter media including a filtration layer comprising fibers (e.g., synthetic fibers) comprising a flame retardant and related components, systems, and methods associated herewith are provided. In some embodiments, a filtration layer may include a nonwoven web (e.g., wet-laid nonwoven web) comprising fibers including a certain flame retardant that has a relatively low concentration of or is substantially free of certain undesirable and/or toxic components (e.g., halogens). In certain embodiments, the nonwoven web may also comprise a blend of fibers. For instance, in some embodiments, the nonwoven web may also comprise a blend of coarse and fine diameter synthetic fibers that impart beneficial performance properties to the filtration layer. In some embodiments, the filtration layer may be designed to have a desirable flame retardancy (e.g., F1 rating, K1 rating) and performance properties without compromising certain mechanical properties (e.g., pleatability of the media) and/or environmental attributes (e.g., relatively low toxicity). Filter media described herein may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.
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公开(公告)号：US11684885B2
公开(公告)日：2023-06-27
申请号：US17475458
申请日：2021-09-15
Applicant: Hollingsworth & Vose Company
Inventor： Sudhakar Jaganathan , Nagendra Anantharamaiah , Maxim Silin
CPC classification number: B01D46/62 , A41D13/11 , B01D39/1623 , B01D39/1692 , B01D46/521 , B01D46/543 , A62B23/02 , A62B23/025 , B01D2239/065 , B01D2239/0622 , B01D2239/0631 , B01D2239/1233 , B01D2275/10
Abstract: Filter media comprising a pre-filter layer and related components, systems, and methods associated therewith are provided. In some embodiments, the pre-filter layer may be designed to impart desirable properties to the filter media, such as a high gamma and/or long service life, while having relatively minimal or no adverse effects on another property of the filter media that is important for a given application. For instance, a pre-filter layer may be used to improve the upstream removal of fine particulate matter, which may clog a downstream efficiency layer comprising submicron fibers and reduce filtration performance. The pre-filter layer may be configured to increase service life and/or increase the gamma of the filter media. Filter media, as described herein, may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.
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公开(公告)号：US20220072462A1
公开(公告)日：2022-03-10
申请号：US17475458
申请日：2021-09-15
Applicant: Hollingsworth & Vose Company
Inventor： Sudhakar Jaganathan , Nagendra Anantharamaiah , Maxim Silin
Abstract: Filter media comprising a pre-filter layer and related components, systems, and methods associated therewith are provided. In some embodiments, the pre-filter layer may be designed to impart desirable properties to the filter media, such as a high gamma and/or long service life, while having relatively minimal or no adverse effects on another property of the filter media that is important for a given application. For instance, a pre-filter layer may be used to improve the upstream removal of fine particulate matter, which may clog a downstream efficiency layer comprising submicron fibers and reduce filtration performance. The pre-filter layer may be configured to increase service life and/or increase the gamma of the filter media. Filter media, as described herein, may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.
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Patent Agency Ranking
公开(公告)号：US20170232372A1
公开(公告)日：2017-08-17
申请号：US15283014
申请日：2016-09-30
Applicant: Hollingsworth & Vose Company
Inventor： Xiaodan Zhang , Douglas M. Guimond , Carrie Liu , Nagendra Anantharamaiah , Sudhakar Jaganathan , Gerald Gadbois , Maxim Silin , Mark A. Gallimore
CPC classification number: B01D39/163 , B01D39/14 , B01D39/1615 , B01D39/18 , B01D39/2089 , B01D2239/0216 , B01D2239/1225 , B01D2239/1258 , B01D2239/1291
Abstract: Filter media including a filtration layer comprising fibers (e.g., synthetic fibers) comprising a flame retardant and related components, systems, and methods associated herewith are provided. In some embodiments, a filtration layer may include a nonwoven web (e.g., wet-laid nonwoven web) comprising fibers including a certain flame retardant that has a relatively low concentration of or is substantially free of certain undesirable and/or toxic components (e.g., halogens). In certain embodiments, the nonwoven web may also comprise a blend of fibers. For instance, in some embodiments, the nonwoven web may also comprise a blend of coarse and fine diameter synthetic fibers that impart beneficial performance properties to the filtration layer. In some embodiments, the filtration layer may be designed to have a desirable flame retardancy (e.g., F1 rating, K1 rating) and performance properties without compromising certain mechanical properties (e.g., pleatability of the media) and/or environmental attributes (e.g., relatively low toxicity). Filter media described herein may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.
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公开(公告)号：US12011686B2
公开(公告)日：2024-06-18
申请号：US18316721
申请日：2023-05-12
Applicant: Hollingsworth & Vose Company
Inventor： Sudhakar Jaganathan , Nagendra Anantharamaiah , Maxim Silin
CPC classification number: B01D46/62 , A41D13/11 , B01D39/1623 , B01D39/1692 , B01D46/521 , B01D46/543 , A62B23/02 , A62B23/025 , B01D2239/0622 , B01D2239/0631 , B01D2239/065 , B01D2239/1233 , B01D2275/10
Abstract: Filter media comprising a pre-filter layer and related components, systems, and methods associated therewith are provided. In some embodiments, the pre-filter layer may be designed to impart desirable properties to the filter media, such as a high gamma and/or long service life, while having relatively minimal or no adverse effects on another property of the filter media that is important for a given application. For instance, a pre-filter layer may be used to improve the upstream removal of fine particulate matter, which may clog a downstream efficiency layer comprising submicron fibers and reduce filtration performance. The pre-filter layer may be configured to increase service life and/or increase the gamma of the filter media. Filter media, as described herein, may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.
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公开(公告)号：US11707914B2
公开(公告)日：2023-07-25
申请号：US16442723
申请日：2019-06-17
Applicant: Hollingsworth & Vose Company
Inventor： Nagendra Anantharamaiah , Mark A. Gallimore
IPC: A41D31/102 , A61B46/00 , D04H1/559 , A41D13/12 , D04H1/4374 , A41H43/04 , D04H1/56 , B32B5/26 , B32B5/02 , B32B7/02 , B32B7/12 , B32B37/12 , B32B37/14 , B32B37/18 , B32B38/00
CPC classification number: B32B5/26 , A41D13/12 , A41D13/1209 , A41D31/102 , A41H43/04 , A61B46/00 , A61B46/40 , B32B5/022 , B32B7/02 , B32B7/12 , B32B37/12 , B32B37/144 , B32B37/185 , B32B38/0012 , D04H1/4374 , D04H1/559 , D04H1/56 , A41D2500/30 , A41D2500/50 , B32B2038/0064 , B32B2262/0253 , B32B2305/28 , B32B2307/724 , B32B2323/10 , B32B2535/00 , B32B2571/00
Abstract: Protective clothing materials and related methods and garments are provided. In some embodiments, a protective clothing material may comprise a fibrous layer that serves as a barrier to certain fluids (e.g., bodily fluids, water) and microbes. The impermeability of the fibrous layer may be due, at least in part, to the structural uniformity and/or relatively small pore size of the fibrous layer. In some embodiments, the fibrous layer may have a relatively high air permeability that imparts beneficial properties (e.g., relatively high air flow, breathability) to the protective clothing material without adversely affecting its protection rating. In certain embodiments, the protective clothing material may also comprise one or more coarse nonwoven webs that impart beneficial properties (e.g., splash resistance) to the protective clothing material. The protective clothing materials, described herein, may be particularly useful for a wide variety of applications, including the formation of AAMI level 4 protective garments.
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公开(公告)号：US11167232B2
公开(公告)日：2021-11-09
申请号：US16504835
申请日：2019-07-08
Applicant: Hollingsworth & Vose Company
Inventor： Sudhakar Jaganathan , Nagendra Anantharamaiah , Maxim Silin
Abstract: Filter media comprising a pre-filter layer and related components, systems, and methods associated therewith are provided. In some embodiments, the pre-filter layer may be designed to impart desirable properties to the filter media, such as a high gamma and/or long service life, while having relatively minimal or no adverse effects on another property of the filter media that is important for a given application. For instance, a pre-filter layer may be used to improve the upstream removal of fine particulate matter, which may clog a downstream efficiency layer comprising submicron fibers and reduce filtration performance. The pre-filter layer may be configured to increase service life and/or increase the gamma of the filter media. Filter media, as described herein, may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.
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公开(公告)号：US11014030B2
公开(公告)日：2021-05-25
申请号：US15283014
申请日：2016-09-30
Applicant: Hollingsworth & Vose Company
Inventor： Xiaodan Zhang , Douglas M. Guimond , Carrie Liu , Nagendra Anantharamaiah , Sudhakar Jaganathan , Gerald Gadbois , Maxim Silin , Mark A. Gallimore
Abstract: Filter media including a filtration layer comprising fibers (e.g., synthetic fibers) comprising a flame retardant and related components, systems, and methods associated herewith are provided. In some embodiments, a filtration layer may include a nonwoven web (e.g., wet-laid nonwoven web) comprising fibers including a certain flame retardant that has a relatively low concentration of or is substantially free of certain undesirable and/or toxic components (e.g., halogens). In certain embodiments, the nonwoven web may also comprise a blend of fibers. For instance, in some embodiments, the nonwoven web may also comprise a blend of coarse and fine diameter synthetic fibers that impart beneficial performance properties to the filtration layer. In some embodiments, the filtration layer may be designed to have a desirable flame retardancy (e.g., F1 rating, K1 rating) and performance properties without compromising certain mechanical properties (e.g., pleatability of the media) and/or environmental attributes (e.g., relatively low toxicity). Filter media described herein may be particularly well-suited for applications that involve filtering air, though the media may also be used in other applications.
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