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公开(公告)号：US20240293985A1
公开(公告)日：2024-09-05
申请号：US18586910
申请日：2024-02-26
Applicant: Alcon Inc.
Inventor： Richard Charles Breitkopf , Feng Jing , Daqing Wu , Jack W. Trieu , Steve Yun Zhang
IPC: B29D11/00 , B29C33/40 , B29C35/02 , B29K83/00 , B29K105/00 , B29K105/16 , G02C7/04
CPC classification number: B29D11/00865 , B29C33/40 , B29C35/0227 , B29D11/00067 , B29D11/00125 , B29K2083/00 , B29K2105/0002 , B29K2105/0061 , B29K2105/16 , B29K2823/12 , B29K2995/0093 , G02C7/049
Abstract: The invention provides a method for producing coated silicone hydrogel contact lenses in a cost-effective manner. The method comprises treating the molding surfaces of polypropylene lens molds (or other hydrophobic plastic molds) with a vacuum UV or a corona plasma to increase the surface energies of the molding surfaces of the lens molds, cast-molding a silicone hydrogel lens formulation containing a relatively small amount of at least one carboxyl-containing vinylic monomer in the treated lens molds, and heating resultant cast-molded silicone hydrogel contact lenses in an aqueous coating solution comprising a water-soluble and thermally crosslinkable polymeric material to form a coated silicone hydrogel contact lens comprising a bulk silicone hydrogel material and a hydrogel layer covalently attached onto the bulk silicone hydrogel material.
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公开(公告)号：US11840035B2
公开(公告)日：2023-12-12
申请号：US18165653
申请日：2023-02-07
Applicant: Alcon Inc.
Inventor： Richard Charles Breitkopf , Changhong Yin , Steve Yun Zhang
CPC classification number: B29D11/00903 , C08L83/04 , G02B1/043
Abstract: The invention relates to a pad printing instrument comprising an ink supply system capable of control the temperature, viscosity and colorant concentration of an ink in an ink cup. Such controls are achieved by continuously adding and mixing a cold ink having a composition identical to the ink in the ink cup but having a lower temperature. The continuous addition of a small amount of a cold ink into the ink cup could compensate heat generated by the friction between the ink cup and a cliché and could minimize the evaporation of a diluent in the ink and change in the concentration of colorants in the ink and ink viscosity. The invention also relates to use of a pad printing instrument comprising an ink supply system of the invention for producing colored hydrogel or silicone hydrogel contact lenses.
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公开(公告)号：US11439661B2
公开(公告)日：2022-09-13
申请号：US16911833
申请日：2020-06-25
Applicant: ALCON INC.
Inventor： Steve Yun Zhang , Richard Charles Breitkopf , Daqing Wu , Junhao Ge , Maria F. Gubitosi Raspino , Augustine Twum Kumi , Wei Liang
IPC: A61K31/80 , A61P27/04 , A61K31/015 , A61K31/07 , A61K31/122 , A61K31/202 , A61K31/355 , A61K31/593 , A61K31/736 , A61K45/06 , A61K47/10 , A61K47/26 , A61K47/34
Abstract: The invention is generally related to topical ophthalmic compositions comprising: from about 0.05 w/v % to about 5 w/v % of galactomannan polymer; a cis-diol and about 0.5 w/v % to about 10 w/v % of a hydrophilic copolymer which comprises (a) arylborono-containing repeating units each having a boronic acid, (b) repeating units of at least one phosphorylcholine-containing vinylic monomer, and (c) acrylic monomeric units of at least one acrylic monomer having 3 to 16 carbon atoms, the ophthalmic composition is substantially free of a borate for improving lubrication, hydration and drug delivery property.
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公开(公告)号：US20220275154A1
公开(公告)日：2022-09-01
申请号：US17742559
申请日：2022-05-12
Applicant: Alcon Inc.
Inventor： Steve Yun Zhang , Daqing Wu , Junhao Ge , Richard Charles Breitkopf , Xinming Qian , Zach Munoz , Matthew D. Nelson , Augustine Twum Kumi , Weihong Lang , Ying Zheng , Feng Jing , Frank Chang
IPC: C08G77/442 , C08G77/20 , C08G77/388 , C08G77/392 , C08G77/14 , C08L83/10 , G02B1/04 , C08G77/12 , B29D11/00 , G02C7/04
Abstract: The present invention generally relates to inherently wettable silicone hydrogel contact lenses having relatively high oxygen permeability, relatively high equilibrium water content and relatively low elastic modulus. The present invention is also related to a method for making such inherently wettable silicone hydrogel contact lenses.
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公开(公告)号：US11346982B2
公开(公告)日：2022-05-31
申请号：US17038266
申请日：2020-09-30
Applicant: Alcon Inc.
Inventor： Daqing Wu , Junhao Ge , Steve Yun Zhang , Richard Charles Breitkopf , Xinming Qian , Zach Munoz , Matthew D. Nelson , Augustine Twum Kumi , Weihong Lang , Ying Zheng , Feng Jing , Frank Chang
IPC: G02B1/04 , C08L83/04 , C08F230/08 , B29D11/00
Abstract: The present invention generally relates to inherently wettable silicone hydrogel contact lenses having relatively high oxygen permeability, relatively high equilibrium water content and relatively low elastic modulus. The present invention is also related to a method for making such inherently wettable silicone hydrogel contact lenses.
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Patent Agency Ranking
公开(公告)号：US12194698B2
公开(公告)日：2025-01-14
申请号：US17701819
申请日：2022-03-23
Applicant: Alcon Inc.
Inventor： Richard Charles Breitkopf , Zahra Bassampour , Chandana Kolluru , Steve Yun Zhang
IPC: G02C7/00 , B29C45/14 , B29D11/00 , C08J3/075 , C08J3/24 , G02C7/02 , G02C7/04 , B29C33/38 , B29K83/00 , B29K633/04
Abstract: The invention relates to a method for producing embedded hydrogel contact lenses each having a magnetized insert that comprises magnetic particles and is centrally embedded in the bulk hydrogel material of the embedded hydrogel contact lens. During molding, a magnetized insert can be centered and held in position in a lens mold by using a magnet placed below the lens mold. The invention also relates to an embedded hydrogel contact lens produced from a method of the invention.
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公开(公告)号：US20230182423A1
公开(公告)日：2023-06-15
申请号：US18165653
申请日：2023-02-07
Applicant: Alcon Inc.
Inventor： Richard Charles Breitkopf , Changhong Yin , Steve Yun Zhang
CPC classification number: B29D11/00903 , C08L83/04 , G02B1/043
Abstract: The invention relates to a pad printing instrument comprising an ink supply system capable of control the temperature, viscosity and colorant concentration of an ink in an ink cup. Such controls are achieved by continuously adding and mixing a cold ink having a composition identical to the ink in the ink cup but having a lower temperature. The continuous addition of a small amount of a cold ink into the ink cup could compensate heat generated by the friction between the ink cup and a cliché and could minimize the evaporation of a diluent in the ink and change in the concentration of colorants in the ink and ink viscosity. The invention also relates to use of a pad printing instrument comprising an ink supply system of the invention for producing colored hydrogel or silicone hydrogel contact lenses.
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公开(公告)号：US11254075B2
公开(公告)日：2022-02-22
申请号：US16429853
申请日：2019-06-03
Applicant: Alcon Inc.
Inventor： Richard Charles Breitkopf , Daqing Wu , Junhao Ge , Steve Yun Zhang
Abstract: The invention provides a contact lens manufacturing method comprising a process for removing unprocessed molded silicone hydrogel contact lenses from mold halves in a relatively efficient and consistent manner. A method of the invention comprises the combination of using a hydrophilic (meth)acrylamido monomer as one of major polymerizable components in a lens formulation for cast-molding of contact lenses, adding a post-curing treatment step which involves heating molds with molded lenses therewithin in an oven at a post-curing temperature higher than the curing temperature and under nitrogen gas flow at a higher flow rate, and using ultrasonic vibration energy for delensing. This method of the invention can be easily implemented in a production environment for enhancing the production yield.
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公开(公告)号：US20210271109A1
公开(公告)日：2021-09-02
申请号：US17122718
申请日：2020-12-15
Applicant: Alcon Inc.
Inventor： Li Yao , Richard Charles Breitkopf , Steve Yun Zhang
Abstract: The invention is directed to a contact lens for color blindness, comprising: a pupil section, a generally annular iris section surrounding the pupil section, wherein the pupil section comprising a dye containing layer which is enclosed between two clear layers so that the dye cannot leach out, wherein the dye filters out the specific wavelength bands between 545 nm and 575 nm to correct color vision blindness; wherein the iris section having a colored, printed, opaque, intermittent pattern, said pattern comprising: an annular pattern of a color and at least at least one other colored patterns extending across a portion of the iris section selected from a group of patterns consisting of outermost starburst pattern, outer starburst pattern and inner starburst pattern
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公开(公告)号：US20210009762A1
公开(公告)日：2021-01-14
申请号：US17038293
申请日：2020-09-30
Applicant: Alcon Inc.
Inventor： Steve Yun Zhang , Daqing Wu , Junhao Ge , Richard Charles Breitkopf , Xinming Qian , Zach Munoz , Matthew D. Nelson , Augustine Twum Kumi , Weihong Lang , Ying Zheng , Feng Jing , Frank Chang
IPC: C08G77/442 , C08G77/20 , C08G77/388 , C08G77/392 , C08G77/14 , C08L83/10 , G02B1/04 , C08G77/12 , B29D11/00 , G02C7/04
Abstract: The present invention generally relates to inherently wettable silicone hydrogel contact lenses having relatively high oxygen permeability, relatively high equilibrium water content and relatively low elastic modulus. The present invention is also related to a method for making such inherently wettable silicone hydrogel contact lenses.
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