Patents by Inventor J. Richard Robertson, Jr.

J. Richard Robertson, Jr. 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).

  • Hydrophilic modifier monomers
    Patent number: 5162530
    Abstract: Hydrophilic modifier monomers of the formula [X-T].sub.z' H' are disclosed wherein X is a reactive group, H' is a hydrophilic group and T is a divalent linking group, z' being a number up to the available valence of H', excess H' valences being taken up by hydrogen. The monomers of the invention can be used to boost the hydrophilic nature of a wide variety of polymeric materials or be polymerized themselves with varying degrees of copolymerizable monomers. They are particularly suited for making hydrophilic contact lens materials.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: November 10, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Frank Molock, J. Richard Robertson, Jr., Kai C. Su
  • Glutarimido and succinimido derivatives
    Patent number: 5053515
    Abstract: Hydrophilic modifier monomers of the formula [X--T].sub.z 'G' are disclosed wherein X is a reactive group, G' is a hydrophilic group and T is a divalent linking group, z' being a number up to the available valence of G', excess G' valences being taken up by hydrogen. The monomers of the invention can be used to boost the hydrophilic nature of a wide variety of polymeric materials or be polymerized themselves with varying degrees of copolymerizable monomers. They are particularly suited for making hydrophilic contact lens materials.
    Type: Grant
    Filed: February 5, 1990
    Date of Patent: October 1, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Frank Molock, J. Richard Robertson, Jr., Kai C. Su
  • Hydrophilic modifier monomers
    Patent number: 4921956
    Abstract: Hydrophilic modifier monomers of the formula [X-T].sub.z' G are disclosed wherein X is a reactive group, G is a hydrophilic group and T is a divalent linking group, z' being a number up to the available valence of G, excess G valences being taken up by hydrogen. The monomers of the invention can be used to boost the hydrophilic nature of a wide variety of polymeric materials or be polymerized themselves with varying degrees of copolymerizable monomers. They are particularly suited for making hydrophilic contact lens materials.
    Type: Grant
    Filed: June 21, 1989
    Date of Patent: May 1, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Frank Molock, J. Richard Robertson, Jr., Kai C. Su
  • Hydrophilic modifier monomers
    Patent number: 4859780
    Abstract: Hydrophilic modifier monomers of the formula [X-T].sub.z 'G are disclosed wherein X is a reactive group, G is a hydrophilic group and T is a divalent linking group, z' being a number up to the available valence of G, excess G valences being taken up by hydrogen. The monomers of the invention can be used to boost the hydrophilic nature of a wide variety of polymeric materials or be polymerized themselves with varying degrees of copolymerizable monomers. They are particularly suited for making hydrophilic contact lens materials.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: August 22, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Frank Molock, J. Richard Robertson, Jr., Kai C. Su