Patents by Inventor Donald E. Keeley

Donald E. Keeley 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).

  • Contact lens with PVA cover layer
    Patent number: 6890075
    Abstract: A contact lens having a cover layer of polyvinyl alcohol and an opaque simulated iris pattern and an associated method of manufacture. The opaque simulated iris pattern obscures the underlying natural iris for superior color transformation, and provides enhanced cosmetic effect.
    Type: Grant
    Filed: May 22, 2002
    Date of Patent: May 10, 2005
    Assignee: Novartis AG
    Inventors: Charles Auxilium Francis, Richard Charles Turek, Donald E. Keeley
  • Contact lens with PVA cover layer
    Publication number: 20030035083
    Abstract: A contact lens having a cover layer of polyvinyl alcohol and an opaque simulated iris pattern and an associated method of manufacture. The opaque simulated iris pattern obscures the underlying natural iris for superior color transformation, and provides enhanced cosmetic effect.
    Type: Application
    Filed: May 22, 2002
    Publication date: February 20, 2003
    Inventors: Charles Auxilium Francis, Richard Charles Turek, Donald E. Keeley
  • Sterile hydrophobic polytetrafluoroethylene membrane laminate
    Patent number: 5037457
    Abstract: A gamma radiation sterilized membrane laminate is provided comprising a porous polytetrafluoroethylene membrane directly laminated to a porous polyester web substrate. The laminate is hydrophobic and has a burst strength when unsupported of at least 10 psi in both the forward and reverse direction of filtration after the laminate is exposed to radiation.
    Type: Grant
    Filed: March 7, 1990
    Date of Patent: August 6, 1991
    Assignee: Millipore Corporation
    Inventors: Paul S. Goldsmith, Claire M. Carey, Donald E. Keeley, Vinay Goel
  • Process for preparing cyclic amides
    Patent number: 4309543
    Abstract: A process for preparing cyclic amides from an optionally substituted acetic acid and an aromatic aminocarbonyl compound is disclosed. The process employs a promoter comprising tetravalent titanium or silicon and a pyridine compound to effect formation of the cyclic amides.
    Type: Grant
    Filed: March 17, 1980
    Date of Patent: January 5, 1982
    Assignee: Dynapol
    Inventor: Donald E. Keeley
  • Organic materials having meta, para-isopropylidene diphenoxy units and method
    Patent number: 4268647
    Abstract: Meta,para-isopropylidene bisphenol is homopolymerized and copolymerized to produce a variety of high performance thermoplastics having improved processing characteristics. In addition to polycarbonates, there are provided polyesters, polyestercarbonates, polyepoxides, polysulfones, polyetherimides, polyformals, epoxy resins and polycarbonate-polydiorganosiloxane block polymers.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: May 19, 1981
    Assignee: General Electric Company
    Inventor: Donald E. Keeley
  • Meta, para-substituted isopropylidene bisphenols and methods for making
    Patent number: 4239918
    Abstract: Meta,para-substituted isopropylidene bisphenols are provided and methods for making such materials. Phenol, or substituted phenol is condensed with a meta-substituted isopropenyl phenol or a meta-hydroxy-.alpha.,.alpha.-dimethylbenzyl alcohol in the presence of an acid catalyst. The resulting meta,para-substituted isopropylidene bisphenols can be used as stabilizers for polyvinyl chloride resins and as intermediates for making high performance thermoplastics having chemically combined meta,para-isopropylidene diphenoxy units.
    Type: Grant
    Filed: December 6, 1978
    Date of Patent: December 16, 1980
    Assignee: General Electric Company
    Inventor: Donald E. Keeley
  • Organic materials having meta, para-isopropylidene diphenoxy units and method
    Patent number: 4237259
    Abstract: Meta,para-isopropylidene bisphenol is homopolymerized and copolymerized to produce a variety of high performance thermoplastics having improved processing characteristics. In addition to polycarbonates, there are provided polyesters, polyestercarbonates, polyepoxides, polysulfones, polyetherimides, polyformals, epoxy resins and polycarbonate-polydiorganosiloxane block polymers.
    Type: Grant
    Filed: December 6, 1978
    Date of Patent: December 2, 1980
    Assignee: General Electric Company
    Inventor: Donald E. Keeley