Patents by Inventor William E. Estes

William E. Estes 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).

  • Liquid crystal displays of high tilt bias angles
    Patent number: 5186985
    Abstract: Liquid Crystal Display Devices having alignment layers of polyimides which are characterized by pendant perfluorinated chains, preferably linear, and having more than 6 perfluorinated carbon atoms. These alignment layers are capable to provide the Liquid Crystal Display Devices with stable tilt angles of 5 or more degrees.
    Type: Grant
    Filed: April 4, 1991
    Date of Patent: February 16, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: William E. Estes, David P. Higley, Brian C. Auman, Andrew E. Feiring
  • Arylsiloxane/silicate compositions useful as interlayer dielectric films
    Patent number: 4801507
    Abstract: Oligomers and polymers, useful as interlayer dielectric films, are formed by the co(hydrolysis/condensation) of an aryl group-containing trifunctional silanetriol or derivative with a tetrafunctional silicic acid compound. The respective tri- and tetrafunctional substituents on either silicon compound reaction are chosen so that they act as reactants in condensation oligomerization or polymerization reactions with the substituents on the other reactant.
    Type: Grant
    Filed: July 2, 1987
    Date of Patent: January 31, 1989
    Assignee: Akzo American Inc.
    Inventors: William E. Estes, John H. Deatcher, George E. Whitwell
  • Phospho-boro-silanol interlayer dielectric films and preparation
    Patent number: 4663414
    Abstract: There are disclosed certain categories of novel spin-coating compositions comprising phosphorus-doped and/or boron-doped silsesquioxane oligomers. Cured interlayer dielectric films prepared therefrom have a superior combination of defined properties, particularly including adhesion (of single-coat and multiple coats) and/or resistance against degradation at temperatures above 500.degree. C. The spin-coating compositions are prepared in a critical manner from critical raw materials.
    Type: Grant
    Filed: May 14, 1985
    Date of Patent: May 5, 1987
    Assignee: Stauffer Chemical Company
    Inventors: William E. Estes, Wayne E. Marsh
  • Method to improve yields of sodium hypophosphite
    Patent number: 4552737
    Abstract: A process of producing sodium hypophosphite (Na.sub.2 H.sub.2 PO.sub.2) is disclosed wherein the yield of the product is increased. The process comprises increasing the NaOH/P.sub.4 ratio above stoichiometric quantity to from about 2.4 to about 3.0 while maintaining a Ca(OH).sub.2 /P.sub.4 ratio of above about 1.21 in the reaction wherein phosphorus, sodium hydroxide, calcium, hydroxide and water are reacted to produce sodium hypophosphite. The invention further comprises a corresponding increase in dilution (H.sub.2 O/P.sub.4) to from about 38 to about 60.
    Type: Grant
    Filed: January 13, 1984
    Date of Patent: November 12, 1985
    Assignee: Stauffer Chemical Company
    Inventor: William E. Estes
  • Method to improve yields of sodium hypophosphite
    Patent number: 4521391
    Abstract: A process of producing sodium hypophosphite (NaH.sub.2 PO.sub.2) is disclosed wherein the yield of the product is increased. The process comprising reacting phosphorus, sodium hydroxide, calcium hydroxide and water wherein the H.sub.2 O/P.sub.4 ratio is increased from about 35 to from about 38 to about 60.
    Type: Grant
    Filed: January 13, 1984
    Date of Patent: June 4, 1985
    Assignee: Stauffer Chemical Company
    Inventor: William E. Estes