Patents by Inventor Paul Harisiades

Paul Harisiades 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).

  • Crosslinked siloxane-urethane polymer contact lens
    Patent number: 5426158
    Abstract: A contact lens is described which is synthesized by reaction in a mold of a isocyanate capped poly(dialkylsiloxane) prepolymer with a poly(dialkylsiloxane) di- or polyalkanol. The clear polyurethane rubber contact lens is readily made completely wettable by a transfer-grafting process or post-treatment and has a high oxygen permeability.
    Type: Grant
    Filed: April 14, 1994
    Date of Patent: June 20, 1995
    Assignee: Ciba-Geigy Corp.
    Inventors: Karl F. Mueller, Paul Harisiades
  • Glass coating with improved adhesion and weather resistance
    Patent number: 5426204
    Abstract: A novel coating for glass with an adhesive strength of >45 Kg/cm.sup.2 and improved resistance to moisture and sunlight, which may contain opacifying pigments for decorating glass surfaces, is a hard (Shore D 84), crosslinked siloxane-urea, siloxane-urethane, siloxane-sulfide or siloxane-amide which adheres covalently to the glass surface and is resistant to scratching and delamination.
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: June 20, 1995
    Assignee: Ciba-Geigy Corporation
    Inventors: Paul Harisiades, Kirtland P. Clark
  • Glass coating with improved adhesion and weather resistance
    Patent number: 5372889
    Abstract: A novel coating for glass with an adhesive strength of >45 Kg/cm.sup.2 and improved resistance to moisture and sunlight, which may contain opacifying pigments for decorating glass surfaces, is a hard (Shore D 84), crosslinked siloxane-urea, siloxane-urethane, siloxane-sulfide or siloxane-amide which adheres covalently to the glass surface and is resistant to scratching and delamination.
    Type: Grant
    Filed: September 14, 1993
    Date of Patent: December 13, 1994
    Assignee: Ciba-Geigy Corporation
    Inventors: Paul Harisiades, Kirtland P. Clark
  • Glass coating with improved adhesion and weather resistance
    Patent number: 5266715
    Abstract: A novel coating for glass with an adhesive strength of >45 Kg/cm.sup.2 and improved resistance to moisture and sunlight, which may contain opacifying pigments for decorating glass surfaces, is a hard (Shore D 84), crosslinked siloxane-urea, siloxane-urethane, siloxane-sulfide or siloxane-amide which adheres covalently to the glass surface and is resistant to scratching and delamination.
    Type: Grant
    Filed: March 6, 1991
    Date of Patent: November 30, 1993
    Assignee: Ciba-Geigy Corporation
    Inventors: Paul Harisiades, Kirtland P. Clark
  • Hydroxyethyl cellulose derivatives containing pendant (meth)acryloyl units bound through urethane groups and hydrogel contact lenses made therefrom
    Patent number: 5157093
    Abstract: The instant invention relates to methacrylate functionalized hydroxyethyl cellulose which is crosslinked with conventional vinylic monomers to form soft hydrogel contact lenses possessing high oxygen permeability, wettability, and mechanical strength.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: October 20, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: Paul Harisiades, Ellen Rennwant
  • Crosslinked siloxane-urethane polymer contact lens
    Patent number: 4983702
    Abstract: A contact lens is described which is synthesized by reaction in a mold of a isocyanate capped poly(dialkylsiloxane) prepolymer with a poly(dialkylsiloxane) di- or polyalkanol. The clear polyurethane rubber contact lens is readily made completely wettable by a transfer-grafting process or post-treatment and has a high oxygen permeability.
    Type: Grant
    Filed: September 28, 1988
    Date of Patent: January 8, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: Karl F. Mueller, Paul Harisiades
  • Novel polysiloxane-polyurethanes and contact lens thereof
    Patent number: 4962178
    Abstract: A novel polysiloxane polyurethane is described which is obtained by reaction of an isocyanate capped polysiloxane prepolymer with a polysiloxane-disilanol and which contains O-silyl-urethane linkages. The novel polysiloxane-polyurethanes are useful as oxygen permeable membranes or films, as bandages and drug carriers, for example in transdermal drug delivery, and especially as highly oxygen permeable, soft contact lenses.
    Type: Grant
    Filed: November 3, 1988
    Date of Patent: October 9, 1990
    Assignee: Ciba-Geigy Corporation
    Inventor: Paul Harisiades
  • Rigid, gas-permeable polysiloxane contact lenses
    Patent number: 4923906
    Abstract: New polysiloxane contact lenses are described which are prepared from polysiloxanes bearing at least three polymerizable vinyl groups by copolymerization with acrylic comonomers. The new lens materials are characterized by a superior combination of high oxygen permeability and rigidity.
    Type: Grant
    Filed: April 26, 1989
    Date of Patent: May 8, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Karl F. Mueller, Paul Harisiades
  • UV- and heat curable terminal polyvinyl functional macromers and polymers thereof
    Patent number: 4837289
    Abstract: New polysiloxanes are described which bear at least three vinyl groups. Such polyvinyl polysiloxanes are useful as heat or UV curing resins with high cross link density and are especially useful as coatings and in the manufacture of contact lens materials.
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: June 6, 1989
    Assignee: Ciba-Geigy Corporation
    Inventors: Karl F. Mueller, Paul Harisiades