Patents by Inventor Erwin C. Si

Erwin C. Si has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11934044
    Abstract: A WS12-releasing contact lens is described as well as method of manufacturing the same. The WS12-releasing contact lens comprises a polymeric lens body and WS12 releasably adhered to the polymeric lens body, and releases from 0.05 ?g to 0.5 ?g WS12 after 1 hour in a release media or when worn by a human subject. The WS12-releasing contact lens can be comfortably worn by a symptomatic contact lens wearer and can increase the duration of comfortable lens wearing time and/or reduce lens awareness events and/or reduce contact lens dryness in a symptomatic contact lens wearer.
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: March 19, 2024
    Assignee: COOPERVISION INTERNATIONAL LIMITED
    Inventors: Erwin C. Si, Victoria Rogers, Nancy J. Keir, Subam Basuthkar Sundar Rao, Arthur Bradley
  • Publication number: 20240036354
    Abstract: A WS12-releasing contact lens is described as well as method of manufacturing the same. The WS12-releasing contact lens comprises a polymeric lens body and WS12 releasably adhered to the polymeric lens body, and releases from 0.05 ?g to 0.5 ?g WS12 after 1 hour in a release media or when worn by a human subject. The WS12-releasing contact lens can be comfortably worn by a symptomatic contact lens wearer and can increase the duration of comfortable lens wearing time and/or reduce lens awareness events and/or reduce contact lens dryness in a symptomatic contact lens wearer.
    Type: Application
    Filed: April 28, 2022
    Publication date: February 1, 2024
    Applicant: CooperVision International Limited
    Inventors: Erwin C. SI, Victoria ROGERS, Nancy J. KEIR, Subam BASUTHKAR SUNDAR RAO, Arthur BRADLEY
  • Publication number: 20230350228
    Abstract: A contact lens having an amount of at least one cooling agent and at least one TRPV1 inhibitor releasably adhered is described as well as method of manufacturing the same. The contact lens can be comfortably worn by contact lens wearers and can increase the duration of comfortable lens wearing time and/or reduce lens awareness events and/or reduce contact lens dryness in a symptomatic contact lens wearer and further can reduce or avoid any stinging/burning sensation when the contact lens is first used or a short time thereafter.
    Type: Application
    Filed: April 4, 2023
    Publication date: November 2, 2023
    Applicant: CooperVision International Limited
    Inventors: Erwin C. SI, Nancy J. KEIR, Yuwen LIU, Inna MALTSEVA
  • Publication number: 20220350163
    Abstract: A WS12-releasing contact lens is described as well as method of manufacturing the same. The WS12-releasing contact lens comprises a polymeric lens body and WS12 releasably adhered to the polymeric lens body, and releases from 0.05 ?g to 0.5 ?g WS12 after 1 hour in a release media or when worn by a human subject. The WS12-releasing contact lens can be comfortably worn by a symptomatic contact lens wearer and can increase the duration of comfortable lens wearing time and/or reduce lens awareness events and/or reduce contact lens dryness in a symptomatic contact lens wearer.
    Type: Application
    Filed: April 26, 2022
    Publication date: November 3, 2022
    Applicant: CooperVision International Limited
    Inventors: Erwin C. SI, Victoria ROGERS, Nancy J. KEIR, Subam BASUTHKAR SUNDAR RAO, Arthur BRADLEY
  • Publication number: 20220187620
    Abstract: An oleic acid-releasing contact lens is described as well as method of manufacturing the same. The oleic acid-releasing contact lens contains oleic acid releasably adhered to the polymeric lens body, and releases from 2 ?g to 25 ?g oleic acid after 1 hour in a release media. The oleic acid-releasing contact lens can be comfortably worn by a symptomatic contact lens wearer, and can increase the duration of comfortable lens wearing time and/or reduce lens awareness events in a symptomatic contact lens wearer.
    Type: Application
    Filed: November 18, 2021
    Publication date: June 16, 2022
    Applicant: CooperVision International Limited
    Inventors: Erwin C. SI, Nancy J. KEIR, Subam BASUTHKAR SUNDAR RAO, Victoria ROGERS, Yuan JI, Yuwen LIU, Hyo Jeang LEE
  • Publication number: 20220183433
    Abstract: A cationic contact lens is described as well as methods of manufacturing the same. The cationic contact lens includes a polymeric lens body that is the reaction product of a polymerizable composition that includes at least one siloxane, at least one nonionic hydrophilic monomer and at least one acyclic tertiary amine monomer. The cationic contact lens can be an unworn sterile silicone hydrogel contact lens. The contact lens is capable of substantially linear release of a releasable anionic agent and the at least one acyclic tertiary amine monomer facilitates uptake and/or sustained release of the releasable anionic agent by the polymeric lens body. The contact lens can be present in a sealed contact lens package.
    Type: Application
    Filed: November 18, 2021
    Publication date: June 16, 2022
    Applicant: CooperVision International Limited
    Inventors: Yuan JI, Yuwen LIU, Victoria ROGERS, Hyo Jeang LEE, Erwin C. SI, Nancy J. KEIR
  • Patent number: 9789058
    Abstract: An ophthalmic composition for administration to an eye of a patient for the treatment of an ocular infection. The ophthalmic composition contains an ?-polylysine (?PL) in an amount effective to treat or control or prevent the ocular infection.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: October 17, 2017
    Assignee: CooperVision International Holding Company, LP
    Inventor: Erwin C. Si
  • Publication number: 20170196805
    Abstract: An ophthalmic composition for administration to an eye of a patient for the treatment of an ocular infection. The ophthalmic composition contains an ?-polylysine (?PL) in an amount effective to treat or control or prevent the ocular infection.
    Type: Application
    Filed: June 18, 2015
    Publication date: July 13, 2017
    Applicant: CooperVision International Holding Company, LP
    Inventor: Erwin C. Si
  • Patent number: 8778999
    Abstract: The disclosure provides compositions and systems for topical ophthalmic application, which include an aqueous mixture of bromfenac and flowable mucoadhesive polymer, for treating inflammation and inflammatory conditions of the eye.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: July 15, 2014
    Assignee: Insite Vision Incorporated
    Inventors: Kamran Hosseini, Lyle Bowman, Erwin C. Si, Stephen Pham
  • Publication number: 20100227928
    Abstract: The disclosure provides compositions and systems for topical ophthalmic application, which include an aqueous mixture of bromfenac and flowable mucoadhesive polymer, for treating inflammation and inflammatory conditions of the eye.
    Type: Application
    Filed: March 5, 2009
    Publication date: September 9, 2010
    Inventors: Kamran HOSSEINI, Lyle M. BOWMAN, Erwin C. SI, Stephen Pham
  • Patent number: 5332582
    Abstract: The invention provides methods for stabilizing amino-substituted steroid therapeutic agents in topical ophthalmic and other pharmaceutical formulations using effective stabilizing amounts of lightly cross-linked carboxy-containing polymers; Stabilized and stabilized/solubilized pharmaceutical compositions adapted for various routes of administration are also described.
    Type: Grant
    Filed: December 2, 1992
    Date of Patent: July 26, 1994
    Assignee: Insite Vision Incorporated
    Inventors: John C. Babcock, Jon R. Polansky, Lyle M. Bowman, Sheng-Wan Tsao, Erwin C. Si, Santosh K. Chandrasekaran
  • Patent number: 5256408
    Abstract: Methods and compositions for preventing or treating ophthalmic diseases or disorders wherein an ophthalmically effective amount of the C.sub.20 through C.sub.26 aminosteroids of formula XI and their pharmaceutical, acceptable salts, hydrates or solvates is administered in an inert vehicle to arrest oxidation processes damaging to the eye.
    Type: Grant
    Filed: February 19, 1992
    Date of Patent: October 26, 1993
    Assignee: Insite Vision Incorporated
    Inventors: John G. Babcock, Jon R. Polansky, Lyle M. Bowman, Sheng-Wan Tsao, Erwin C. Si, Santosh K. Chandrasekaran
  • Patent number: 5209926
    Abstract: Methods and compositions for preventing or treating ophthalmic diseases or disorders wherein an ophthalmically effective amount of the C.sub.20 through C.sub.26 aminosteroids of formula XI and their pharmaceutical, acceptable salts, hydrates or solvates is administered in an inert vehicle to arrest oxidation processes damaging to the eye.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: May 11, 1993
    Assignee: InSite Vision Incorporated
    Inventors: John C. Babcock, Jon R. Polansky, Lyle M. Bowman, Sheng-Wan Tsao, Erwin C. Si, Santosh K. Chandrasekaran
  • Patent number: 5124154
    Abstract: Methods and compositions for preventing or treating ophthalmic diseases or disorders wherein an ophthalmically effective amount of the C.sub.20 through C.sub.26 aminosteroids of formula XI and their pharmaceutical, acceptable salts, hydrates or solvates is administered in an inert vehicle to arrest oxidation processes damaging to the eye.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: June 23, 1992
    Assignee: InSite Vision Incorporated
    Inventors: John C. Babcock, Jon R. Polansky, Lyle M. Bowman, Sheng-Wan Tsao, Erwin C. Si, Santosh K. Chandrasekran