Patents Assigned to Ophtecs Corporation
  • Patent number: 10525159
    Abstract: The present invention relates to a liquid preparation for soft contact lenses, particularly hydrogel contact lenses or silicone hydrogel contact lenses. The liquid preparation for contact lenses according to the present invention contains a hydrolyzed hyaluronic acid derivative having a monoether of a linear or branched alkyl group or alkenyl group having 6 or more and 20 or less carbon atoms and glycerol in a side chain. The liquid preparation for soft contact lenses according to the present invention may contain at least one cationic bactericide selected from the group consisting of an alexidine salt, a chlorhexidine salt, a polyhexamethylene biguanide salt and a quaternary ammonium salt. The liquid preparation for soft contact lenses according to the present invention is capable of suppressing adsorption of a cationic bactericide to soft contact lenses, and suppressing occurrence of corneal staining in a wearer.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: January 7, 2020
    Assignee: OPHTECS CORPORATION
    Inventors: Katsuhide Yamazaki, Haruki Nakagawa
  • Publication number: 20190142990
    Abstract: The present invention relates to a liquid preparation for soft contact lenses, particularly hydrogel contact lenses or silicone hydrogel contact lenses. The liquid preparation for contact lenses according to the present invention contains a hydrolyzed hyaluronic acid derivative having a monoether of a linear or branched alkyl group or alkenyl group having 6 or more and 20 or less carbon atoms and glycerol in a side chain. The liquid preparation for soft contact lenses according to the present invention may contain at least one cationic bactericide selected from the group consisting of an alexidine salt, a chlorhexidine salt, a polyhexamethylene biguanide salt and a quaternary ammonium salt. The liquid preparation for soft contact lenses according to the present invention is capable of suppressing adsorption of a cationic bactericide to soft contact lenses, and suppressing occurrence of corneal staining in a wearer.
    Type: Application
    Filed: May 26, 2016
    Publication date: May 16, 2019
    Applicant: OPHTECS CORPORATION
    Inventors: Katsuhide Yamazaki, Haruki Nakagawa
  • Patent number: 8541468
    Abstract: There are provided an ophthalmic composition that comprises 3-hydroxybutyric acid and/or salts thereof as active ingredients and is used to prevent desiccation of eyes and an ophthalmic composition that is used to treat tear dysfunction. By use of the ophthalmic compositions of the present invention, desiccation of the eyes can be inhibited and tear dysfunction can be treated. Therefore, by use of the compositions, discomforts caused by tear dysfunction, such as desiccation of the eyes, foreign-body sensation, feeling of discomfort on the eyes and eye strain, can be improved. Further, the ophthalmic compositions of the present invention can inhibit diseases caused by tear dysfunction, exemplified by development of dry eye and suspected dry eye which are dysfunctions related to desiccation of the eyes, particularly, development of diseases caused by tear dysfunction without injuries on the keratoconjunctive.
    Type: Grant
    Filed: September 30, 2004
    Date of Patent: September 24, 2013
    Assignee: Ophtecs Corporation
    Inventors: Yuzuru Umeda, Hideo Nakashima, Michiko Shibuya, Yasukazu Saitoh, Shoji Okada, Shigeru Nakamura
  • Publication number: 20130064873
    Abstract: An object of the present invention is to provide a nucleated tablet for contact lens (CL) cleaning that makes it possible to disinfect a CL simply and easily in the presence of a foaming component; a CL cleaning preparation that contains the nucleated tablet; and a method for cleaning a CL. The nucleated tablet for CL cleaning of the invention is a nucleated tablet including an outer shell that contains iodine-based bactericide, a carbonate, an organic acid, and a surfactant having, per partial weight of 2000 out of the molecular weight thereof, less than one hydroxyl group, and an inner nucleus that contains a neutralizing agent, a carbonate, an organic acid, and a surfactant, wherein the inner nucleus is coated for extended release.
    Type: Application
    Filed: January 14, 2011
    Publication date: March 14, 2013
    Applicant: OPHTECS CORPORATION
    Inventors: Kazuhiro Sasanuma, Kazuhiro Tone
  • Publication number: 20100056631
    Abstract: An antiallergenic composition comprising 3-hydroxybutyric acid and/or a salt thereof. The antiallergenic composition is safe.
    Type: Application
    Filed: October 26, 2007
    Publication date: March 4, 2010
    Applicant: OPHTECS CORPORATION
    Inventors: Ryuji Hisamura, Shigeru Nakamura, Toyoaki Yoneda
  • Publication number: 20070225369
    Abstract: There are provided an ophthalmic composition that comprises 3-hydroxybutyric acid and/or salts thereof as active ingredients and is used to prevent desiccation of eyes and an ophthalmic composition that is used to treat tear dysfunction. By use of the ophthalmic compositions of the present invention, desiccation of the eyes can be inhibited and tear dysfunction can be treated. Therefore, by use of the compositions, discomforts caused by tear dysfunction, such as desiccation of the eyes, foreign-body sensation, feeling of discomfort on the eyes and eye strain, can be improved. Further, the ophthalmic compositions of the present invention can inhibit diseases caused by tear dysfunction, exemplified by development of dry eye and suspected dry eye which are dysfunctions related to desiccation of the eyes, particularly, development of diseases caused by tear dysfunction without injuries on the keratoconjunctive.
    Type: Application
    Filed: September 30, 2004
    Publication date: September 27, 2007
    Applicant: Ophtecs Corporation
    Inventor: Yuzuru Umeda
  • Patent number: 6495598
    Abstract: A one-pack preparation of irrigating solution for ocular surgery of cataract, glaucoma or intraocular lens transplantation, which is excellent in the protection of ophthalmic tissues and endothelial cells during and after the operation and has a high in vivo stability. The preparation comprises an aqueous solution containing at least one compound selected from D-3-hydroxybutyric acid and water-soluble salts thereof, at least one compound selected from water-soluble bicarbonates, phosphoric acid and water-soluble phosphates, a water-soluble calcium salt, and a water-soluble magnesium salt.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: December 17, 2002
    Assignee: Ophtecs Corporation
    Inventors: Toyoaki Yoneda, Nobuhisa Naoi, Hiroaki Miichi, Shigeru Nakamura, Toshinao Hata, Fumio Saito, Takeshi Ohnuma
  • Patent number: 6258591
    Abstract: The present invention provides a combined formulation for disinfecting, neutralizing and cleaning a soft contact lens and a method using the same easily, efficiently and safely. The formulation is a one-solution type of combined formulation for disinfecting, neutralizing and cleaning a soft contact lens, which includes a first formulation that contains an iodine-based disinfectant and a proteolytic enzyme and a second formulation that contains a reducing and a foaming agent treated with a delayed release coating, and which contains a nonionic surfactant in at least one of the first and second formulations. A stained soft contact lens can be disinfected, neutralized and cleaned easily by holding it in an aqueous solution colored yellow or brown by iodine molecules and removing it from the aqueous solution after the solution becomes almost colorless.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: July 10, 2001
    Assignee: Ophtecs Corporation
    Inventors: Toyoaki Yoneda, Takashi Fujii, Mika Morita, Takeshi Ohnuma, Hiroshi Tanouchi, Shigeru Nakamura