Patents Assigned to CIS Pharma AG
  • Patent number: 11008414
    Abstract: The present invention relates to copolymers made from a polymerization mixture comprising (a) one or more polymerizable monomers, which monomers are characterized as having at least one vinylic group and not containing an amino acid residue, (b) one or more not-functionalized side chain-linked amino acids, (c) one or more functionalized side chain-linked amino acids, (d) a free radical initiator and, optionally, (e) a chain-transfer-agent. It also relates to block copolymers comprising the same monomers. The invention also encompasses silicone hydrogel contact lenses coated with or comprising the latter copolymers and block copolymers as well methods for introducing the copolymers and block copolymers into silicone hydrogel contact lenses.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: May 18, 2021
    Assignee: CIS PHARMA AG
    Inventors: Christian Geraths, Rolf Schäfer
  • Publication number: 20200283560
    Abstract: The present invention relates to copolymers made from a polymerization mixture comprising (a) one or more polymerizable monomers, which monomers are characterized as having at least one vinylic group and not containing an amino acid residue, (b) one or more not-functionalized side chain-linked amino acids, (c) one or more functionalized side chain-linked amino acids, (d) a free radical initiator and, optionally, (e) a chain-transfer-agent. It also relates to block copolymers comprising the same monomers. The invention also encompasses silicone hydrogel contact lenses coated with or comprising the latter copolymers and block copolymers as well methods for introducing the copolymers and block copolymers into silicone hydrogel contact lenses.
    Type: Application
    Filed: September 30, 2016
    Publication date: September 10, 2020
    Applicant: CIS Pharma AG
    Inventors: Christian Geraths, Rolf Schäfer
  • Patent number: 10251814
    Abstract: The present invention relates to safety delivery systems for intracameral administration of an appropriate dose of cefuroxime subsequent to cataract and other eye surgery. A preferred embodiment of an cefuroxime safety delivery system according to the invention comprises (a) a perforable sterile vial sterile-filled with a measured amount of cefuroxime, (b) a reconstitution syringe with a male luer fitting sterile-filled with 0.1 ml of isotonic salt solution per mg cefuroxime in the perforable vial and a vial adapter with a female luer fitting or one or more needles with female luer fitting, and (c) one or more sterilized delivery syringes with male luer fitting, each delivery syringe being capable of holding at least 0.1 ml of ejectable liquid and containing a marking indicating a fill volume of 0.1 ml of ejectable liquid.
    Type: Grant
    Filed: February 14, 2012
    Date of Patent: April 9, 2019
    Assignee: CIS PHARMA AG
    Inventor: Rolf Schäfer
  • Patent number: 9839719
    Abstract: The invention relates to highly biocompatible or biophilic un-cross-linked or cross-linked polymers comprising one or more side-chain active acrylic amino acids of formula I wherein: X is —NH(CH2)4—, —O—C6H4—CH2—, —OCH2—, —O—CH(CH3)—, —S—CH2—, —O-proline, and R is H or CH3; and wherein the polymer further includes a free radical initiator and, optionally, a cross-linking agent having a plurality of polymerizable ethylenically unsaturated groups. The invention further concerns various highly biocompatible, cross-linked co-polymers comprising one or more monomers of formula I, and one or more other polymerizable monomers. Uses of such polymers and co-polymers for the production of contact lenses, intraocular lenses, implants, wound healing slabs, additives for food and cosmetics, conductive plastics, spinnable fibers, and the like are disclosed.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: December 12, 2017
    Assignee: CIS PHARMA AG
    Inventors: Hans Hitz, Rolf Schäfer, Christoph Schäfer
  • Patent number: 8980957
    Abstract: The subject invention relates to a method of preparing a biocompatible polymer comprising epsilon-linked L-lysine having free alpha-amino and carboxy functions. The invention further encompasses the resulting biocompatible polymer and articles made from the polymer, in particular contact and intraocular lenses.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: March 17, 2015
    Assignee: CIS Pharma AG
    Inventors: Rolf Schäfer, Hans Hitz
  • Publication number: 20140039386
    Abstract: The present invention relates to safety delivery systems for intracameral administration of an appropriate dose of cefuroxime subsequent to cataract and other eye surgery. A preferred embodiment of an cefuroxime safety delivery system according to the invention comprises (a) a perforable sterile vial sterile-filled with a measured amount of cefuroxime, (b) a reconstitution syringe with a male luer fitting sterile-filled with 0.1 ml of isotonic salt solution per mg cefuroxime in the perforable vial and a vial adapter with a female luer fitting or one or more needles with female luer fitting, and (c) one or more sterilized delivery syringes with male luer fitting, each delivery syringe being capable of holding at least 0.1 ml of ejectable liquid and containing a marking indicating a fill volume of 0.1 ml of ejectable liquid.
    Type: Application
    Filed: February 14, 2012
    Publication date: February 6, 2014
    Applicant: CIS Pharma AG
    Inventor: Rolf Schäfer