Patents by Inventor Gordon Francis Meijs

Gordon Francis Meijs 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).

  • Extended wear ophthalmic lens
    Patent number: 5849811
    Abstract: An ophthalmic lens suited for extended-wear for periods of at least one day on the eye without a clinically significant amount of corneal swelling and without substantial wearer discomfort. The lens has a balance of oxygen permeability and ion or water permeability, with the ion or water permeability being sufficient to provide good on-eye movement, such that a good tear exchange occurs between the lens and the eye. A preferred lens is a copolymerization product of a oxyperm macromer and an ionoperm monomer. The invention encompasses extended wear contact lenses, which include a core having oxygen transmission and ion transmission pathways extending from the inner surface to the outer surface.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: December 15, 1998
    Assignees: CIBA Vision Corporation, The Commonwealth of Australia Commonwealth Scientific and Industrial Research Organization
    Inventors: Paul Clement Nicolson, Richard Carlton Baron, Peter Chabrecek, John Court, Angelika Domschke, Hans Jorg Griesser, Arthur Ho, Jens Hopken, Bronwyn Glenice Laycock, Qin Liu, Dieter Lohmann, Gordon Francis Meijs, Eric Papaspiliotopoulos, Judy Smith Riffle, Klaus Schindhelm, Deborah Sweeney, Wilson Leonard Terry, Jr., Jurgen Vogt, Lynn Cook Winterton
  • Methods of forming an extended wear ophthalmic lens having a hydrophilic surface
    Patent number: 5789461
    Abstract: An ophthalmic lens suited for extended-wear for periods of at least one day on the eye without a clinically significant amount of corneal swelling and without substantial wearer discomfort. The lens has a balance of oxygen permeability and ion or water permeability, with the ion or water permeability being sufficient to provide good on-eye movement, such that a good tear exchange occurs between the lens and the eye. A preferred lens is a copolymerization product of a oxyperm macromer and an ionoperm monomer. The invention encompasses extended wear contact lenses, which include a core having oxygen transmission and ion transmission pathways extending from the inner surface to the outer surface.
    Type: Grant
    Filed: July 18, 1996
    Date of Patent: August 4, 1998
    Assignee: Ciba Vision Corporation
    Inventors: Paul Clement Nicolson, Richard Carlton Baron, Peter Chabrecek, John Court, Angelika Domschke, Hans Jorg Griesser, Arthur Ho, Jens Hopken, Bronwyn Glenice Laycock, Qin Liu, Dieter Lohmann, Gordon Francis Meijs, Eric Papaspiliotopoulos, Judy S. Riffle, Klaus Schindhelm, Deborah Sweeney, Wilson Leonard Terry, Jr., Jurgen Vogt, Lynn Cook Winterton
  • Methods of using and screening extended wear ophthalmic lenses
    Patent number: 5776999
    Abstract: An ophthalmic lens screening method suited for extended-wear for periods of at least one day on the eye without a clinically significant amount of corneal swelling and without substantial wearer discomfort. The lens has a balance of oxygen permeability and ion or water permeability, with the ion or water permeability being sufficient to provide good on-eye movement, such that a good tear exchange occurs between the lens and the eye. A preferred lens is a copolymerization product of a oxyperm macromer and an ionoperm monomer. The invention encompasses extended wear contact lenses, which include a core having oxygen transmission and ion transmission pathways extending from the inner surface to the outer surface.
    Type: Grant
    Filed: July 17, 1996
    Date of Patent: July 7, 1998
    Assignee: CIBA Vision Corporation
    Inventors: Paul Clement Nicolson, Richard Carlton Baron, Peter Chabrecek, John Court, Angelika Domschke, Hans Jorg Griesser, Arthur Ho, Jens Hopken, Bronwyn Glenice Laycock, Qin Liu, Dieter Lohmann, Gordon Francis Meijs, Eric Papaspiliotopoulos, Judy Smith Riffle, Klaus Schindhelm, Deborah Sweeney, Wilson Leonard Terry, Jr., Jurgen Vogt, Lynn Cook Winterton
  • Extended wear ophthalmic lens
    Patent number: 5760100
    Abstract: An ophthalmic lens suited for extended-wear for periods of at least one day on the eye without a clinically significant amount of corneal swelling and without substantial wearer discomfort. The lens has a balance of oxygen permeability and ion or water permeability, with the ion or water permeability being sufficient to provide good on-eye movement, such that a good tear exchange occurs between the lens and the eye. A preferred lens is a copolymerization product of a oxyperm macromer and an ionoperm monomer. The invention encompasses extended wear contact lenses, which include a core having oxygen transmission and ion transmission pathways extending from the inner surface to the outer surface.
    Type: Grant
    Filed: December 8, 1995
    Date of Patent: June 2, 1998
    Assignees: CIBA Vision Corporation, Commonwealth Scientific and Industrial Research Organisation
    Inventors: Paul Clement Nicolson, Richard Carlton Baron, Peter Chabrecek, John Court, Angelika Domschke, Hans Jorg Griesser, Arthur Ho, Jens Hopken, Bronwyn Glenice Laycock, Qin Liu, Dieter Lohmann, Gordon Francis Meijs, Eric Papaspiliotopoulos, Judy Smith Riffle, Klaus Schindhelm, Deborah Sweeney, Wilson Leonard Terry, Jr., Jurgen Vogt, Lynn Cook Winterton
  • Polymerization using thionoester compounds as chain transfer agents
    Patent number: 5739228
    Abstract: A process for the production of low molecular weight polymers by free radical polymerization of one or more monomers in the presence of a chain transfer agent, wherein the chain transfer agent comprises one or more compounds of the general formula I ##STR1## wherein R.sup.1 is a hydrogen atom, an alkyl group, or a group capable of activating the carbon-sulfur double bond towards free radical addition; andR.sup.2 represents an optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, or optionally substituted saturated, unsaturated or aromatic carbocyclic or heterocyclic ring.
    Type: Grant
    Filed: June 23, 1995
    Date of Patent: April 14, 1998
    Assignee: Commonwealth Scientific and Industrial Research Organization
    Inventors: Gordon Francis Meijs, Ezio Rizzardo
  • Control of Molecular weight and end group functionality in polymers using unsaturated peroxy compounds as chain transfer agents
    Patent number: 5698648
    Abstract: A process for the production of lower molecular weight polymers by free radical polymerization, characterized in that there is added to the polymerization system a compound of the general formula I ##STR1## wherein R.sup.1 is hydrogen, chlorine, an alkyl group, or a group capable of activating the vinylic carbon towards free radical addition;R.sup.2 is hydrogen or an optionally substituted alkyl, alkenyl, aryl, cycloalkenyl or cycloalkyl group or the group --COZ, where Z is R.sup.3 or OR.sup.3, where R.sup.3 is hydrogen or an optionally substituted alkyl, alkenyl or aryl group.X is a hydrogen atom, an alkyl or aryl group, or a halogen, and the two X groups may be the same or different.The invention also includes polymers or oligomers made by the process and novel compounds of the general formula I as defined above.
    Type: Grant
    Filed: February 28, 1994
    Date of Patent: December 16, 1997
    Assignee: The Commonwealth of Australia Commonwealth Scientific and Industrial Research Organisation
    Inventors: Ezio Rizzardo, Gordon Francis Meijs, San Hoa Thang