Patents by Inventor Stephanie J. Oates

Stephanie J. Oates 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).

  • Polymers of high refractive index and high heat distortion temperature
    Patent number: 5369141
    Abstract: Ophthalmic lenses and lens blanks having high refractive index and high heat distortion temperature are produced by polymerizing a polymerizable, homogeneous composition comprising epichalcogen resin, aliphatic polythiol, and cyclic anhydride.
    Type: Grant
    Filed: June 17, 1992
    Date of Patent: November 29, 1994
    Assignee: PPG Industries, Inc.
    Inventors: Charles R. Coleman, Stephanie J. Oates, James Colton, Vaikunth S. Prabhu
  • Stabilized 1,1,1-trichloroethane compositions
    Patent number: 4992604
    Abstract: 1,1,1-Trichloroethane (viz., methylchloroform) is stabilized with from about 2 to about 4 percent by weight 1,3-dioxolane, from about 0.25 to about 0.5 percent by weight butylene oxide, from about 0.25 to about 2 percent by weight nitromethane, from about 0.2 to about 0.75 percent by weight 1-nitropropane, from about 0.75 to about 2 percent by weight secondary butanol, and from 0 to about 100 parts per million by weight acetaldehyde dimethylhydrazone.
    Type: Grant
    Filed: July 24, 1989
    Date of Patent: February 12, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Donald A. Reich, Catherine C. Doyen, Stephanie J. Oates
  • Partially polymerized bis(allylic carbonate) monomer having high allylic utilization
    Patent number: 4959433
    Abstract: Polymerizable, liquid, substantially gel-free, partially polymerized monomer compositions having allylic utilizations greater than 50 percent can be prepared if the monomer which has been partially polymerized is bis(allylic carbonate) monomer of at least one 4,4'-(alkylidene)-bis[phenol], bis(allylic carbonate) monomer of at least one 4,4'-[phenylenebis(alkylidene)]bis [phenol], or a mixture thereof.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: September 25, 1990
    Assignee: PPG Industries, Inc.
    Inventors: Stephanie J. Oates, Edward J. Sare
  • Compositions for producing polymers of high refractive index
    Patent number: 4829136
    Abstract: Polymerizable compositions comprising 4,4'(1-phenylethylidene)bis[phenol] bis(allyl carbonate) monomer or prepolymer are useful for preparing polymerizates of high refractive index.
    Type: Grant
    Filed: May 13, 1988
    Date of Patent: May 9, 1989
    Assignee: PPG Industries, Inc.
    Inventor: Stephanie J. Oates
  • Compositions for producing polymers of high refractive index and low yellowness
    Patent number: 4757129
    Abstract: (Allylic carbonate)-functional compounds containing three phenylene groups are useful for forming polymers.
    Type: Grant
    Filed: August 25, 1986
    Date of Patent: July 12, 1988
    Assignee: PPG Industries, Inc.
    Inventor: Stephanie J. Oates
  • Compositions for producing polymers of high refractive index and low yellowness
    Patent number: 4746716
    Abstract: (Allylic carbonate)-functional compounds containing three phenylene groups are useful for forming polymers.
    Type: Grant
    Filed: December 3, 1986
    Date of Patent: May 24, 1988
    Assignee: PPG Industries, Inc.
    Inventor: Stephanie J. Oates
  • Composition of aromatic poly(allylcarbonate), styrene materials, and crosslinker containing three or more ethylenically unsaturated groups for producing polymer of high refractive index and low yellowness
    Patent number: 4622376
    Abstract: Pourable, polymerizable compositions comprising aromatic-containing poly(allyl carbonate)-functional material, styrenic material, and monomer having three or more allyl, methallyl, acrylyl and/or methacrylyl groups is free radically polymerized to produce polymerizates having high refractive index, high hardness, and low yellowness. The polymerizates are especially useful in the form of ophthalmic lenses.
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: November 11, 1986
    Assignee: PPG Industries, Inc.
    Inventors: Michael S. Misura, Richard A. Schwarz, Stephanie J. Oates