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公开(公告)号：US12162987B2
公开(公告)日：2024-12-10
申请号：US18465610
申请日：2023-09-12
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 , B29D11/00 , C08G77/12 , C08G77/14 , C08G77/20 , C08G77/388 , C08G77/392 , C08L83/10 , G02B1/04 , 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：US20230357478A1
公开(公告)日：2023-11-09
申请号：US18313489
申请日：2023-05-08
Applicant: Alcon Inc.
Inventor： Newton T. Samuel , Cornelius Daniel Niculas , Richard Charles Breitkopf , Nicholas Gober , Chandana Kolluru , Zahra Bassampour , Steve Yun Zhang
IPC: C08F283/12
CPC classification number: C08F283/124
Abstract: A method for producing embedded hydrogel contact lenses comprises at least the following steps: depositing a small drop of a viscous lens-forming composition in the center of a female lens mold half; placing a preformed insert on top of the small drop precisely in the center of the female lens mold half so that the insert is held by capillary forces due to the presence of a thin layer of the viscous lens-forming composition between the insert and the molding surface of the female lens mold half; dosing an amount of another less viscous lens-forming composition on top of the insert to immerse the insert in the female lens mold half; closing tightly a male lens mold half onto the top of the female lens mold half halves to form a molding assembly; curing both the lens-forming compositions in the molding assembly to form an embedded hydrogel lens precursor.
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公开(公告)号：US11802182B2
公开(公告)日：2023-10-31
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
CPC classification number: C08G77/442 , B29D11/00134 , C08G77/12 , C08G77/14 , C08G77/20 , C08G77/388 , C08G77/392 , C08L83/10 , G02B1/043 , G02C7/04 , C08G2210/00 , C08L2201/10 , G02B2207/109
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：US20230339149A1
公开(公告)日：2023-10-26
申请号：US18306637
申请日：2023-04-25
Applicant: Alcon Inc.
Inventor： Jing Cheng , Feng Jing , Steve Yun Zhang
CPC classification number: B29C39/026 , B29C39/006 , B29C39/021 , B29C39/26 , B29C39/36 , G02B1/043 , B29K2101/10
Abstract: A method for producing embedded hydrogel contact lenses comprises at least the following steps: obtaining an insert made of a crosslinked polymeric material comprising iniferter moieties covalently attached thereto; placing the insert in a female lens mold half; dosing an amount of a lens-forming composition to immerse the insert in the female lens mold half; closing tightly a male lens mold half onto the top of the female lens mold half halves to form a molding assembly; curing the lens-forming composition in the molding assembly to form an embedded hydrogel lens precursor which comprises a bulk hydrogel material formed the lens-forming composition and the insert that is embedded therein and covalently linked to the bulk hydrogel material.
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公开(公告)号：US11584097B2
公开(公告)日：2023-02-21
申请号：US16884512
申请日：2020-05-27
Applicant: Alcon Inc.
Inventor： Steve Yun Zhang , Changhong Yin , Richard Charles Breitkopf
Abstract: The invention provides a thermal cast-molding method for producing colored silicone hydrogel contact lenses. The method of the invention comprises: (1) forming, on a molding surface of a mold, a transferable colored polymeric composite film which comprises or consists essentially of a first polymeric film, a second polymeric film and a cured colored image encapsulated therewithin; (2) dispensing a silicone hydrogel lens formulation into the lens-forming cavity of the mold; and (4) thermally curing the third polymerizable composition within the lens-forming cavity for at least about 40 minutes to form the colored silicone hydrogel contact lens, whereby the transferable, colored, and polymeric composite film detaches from the first or second molding surface and becomes integral with the body of the silicone hydrogel contact lens.
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Patent Agency Ranking
公开(公告)号：US20230004023A1
公开(公告)日：2023-01-05
申请号：US17838358
申请日：2022-06-13
Applicant: Alcon Inc.
Inventor： Zahra Bassampour , Chandana Kolluru , Steve Yun Zhang , Adam K. Sniady , Thomas M. Moy , Frank Chang , David Borja , Joseph Michael Lindacher , Ying Pi
Abstract: The invention provides a delamination-resistant embedded silicone hydrogel contact lens having an insert that is embedded in a silicone hydrogel bulk material. The insert is made of a crosslinked polymeric material having a refractive index higher than that of the silicone hydrogel bulk material by at least 0.07 and comprises a diffractive structure disposed on one of the front and back curve surfaces of the insert for providing a diffractive power that contributes to the overall optical power of the contact lens.
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公开(公告)号：US11542353B2
公开(公告)日：2023-01-03
申请号：US16872628
申请日：2020-05-12
Applicant: Alcon Inc.
Inventor： Weihong Lang , Junhao Ge , Steve Yun Zhang , Daqing Wu
IPC: C08F271/02 , B29D11/00 , C08K5/1545 , C08K5/17 , B29K83/00 , B29K105/00 , G02B1/04
Abstract: The invention provides a method for producing photochromic silicone hydrogel (SiHy) contact lenses based on thermal cast-molding technology in a relatively efficient and consistent manner. The method is characterized by selecting a high radical-reactive hydrophilic acrylic monomer while eliminating any low radical-reactive hydrophilic N-vinyl amide monomer in a lens formulation (polymerizable composition), by selecting a weight ratio of low-radical-reactive hydrophilic N-vinyl amide monomer to a high radical-reactive hydrophilic acrylic monomer in a lens formulation if the low radical-reactive hydrophilic N-vinyl amide monomer is needed, and/or by using a relatively high temperature thermal initiator in a lens formulation, to control the lens properties (e.g., water content, elastic modulus, etc.) and lens processability (capability of dry-delensing from molds) of thermally cast-molded SiHy contact lenses while minimizing loss in photochromic ability of resultant SiHy contact lenses.
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公开(公告)号：US20220365371A1
公开(公告)日：2022-11-17
申请号：US17661121
申请日：2022-04-28
Applicant: Alcon Inc.
Inventor： Junhao Ge , Richard Charles Breitkopf , Steve Yun Zhang , Yuan Chang , Augustine Twum Kumi
Abstract: The invention is directed to a colored cosmetic photochromic contact lens, comprising: a pupil section, a generally annular iris section surrounding the pupil section, wherein at least the pupil section is photochromic, wherein the iris section having a colored, printed, opaque, intermittent pattern, wherein the said pattern is covered by a clear ink layer, wherein the clear ink layer is on outer surface of lens to the observer.
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公开(公告)号：US20220326412A1
公开(公告)日：2022-10-13
申请号：US17710224
申请日：2022-03-31
Applicant: Alcon Inc.
Inventor： Yuan Chang , Junhao Ge , Ying Pi , Cornelius Daniel Niculas , Yang Zheng , Steve Yun Zhang , Michelle Plavnik , Ethan Leveillee , Jing Cheng , Augustine Twum Kumi
IPC: G02B1/04 , C08G77/442 , B29D11/00 , G02C7/04
Abstract: The invention is directed to an embedded hydrogel contact lens, which comprises an insert sandwiched between two layers of hydrogel materials and can be produced according to a cast molding method including the procedures involving two females halves (FC1 and FC2) and two male halves (BC1 and BC2) and three consequential molding steps involving three molding assemblies: the 1st one formed between FC1 and BC1 for molding an insert; the 2nd one formed between FC1 and BC2 for molding a lens precursor having the molded insert embedded in a layer of a hydrogel material in a way that the front surface of the molded insert merges with the convex surface of the lens precursor; and the 3rd one formed between FC2 and BC2 for molding an embedded hydrogel contact of the invention.
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公开(公告)号：US11433629B2
公开(公告)日：2022-09-06
申请号：US16429776
申请日：2019-06-03
Applicant: Alcon Inc.
Inventor： Weihong Lang , Wei Liang , Ying Zheng , Karen Belinda Sentell , Richard Charles Breitkopf , Daqing Wu , Steve Yun Zhang
IPC: B29D11/00 , G02B1/04 , B29K83/00 , B29K105/00
Abstract: The invention provides a contact lens manufacturing method for cast-molding of silicone hydrogel contact lenses having enhanced oxygen permeability without adversely affecting desirable lens mechanical properties (e.g., modulus). A method of the invention comprises adding a small amount of a radical scavenger (e.g., H-TEMPO) in a polymerizable composition for cast-molding of SiHy contact lenses) to provide the resultant polymerizable composition with a bi-phase curing profile at a curing temperature of from about 45° C. to about 100° C. With such a bi-phase curing profile, the resultant polymerizable composition can be thermally cured at the curing temperature to form a SiHy contact lens having an oxygen permeability higher than that for a polymerizable composition having the substantially identical composition excepting being free of any radical scavenger.
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