Patents by Inventor Wayne Jacobson

Wayne Jacobson 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).

  • Titanium dioxide pigment coated with boria-modified silica and alumina
    Patent number: 5753025
    Abstract: A base TiO.sub.2 pigment particles bearing coatings of a boria-modified silica and alumina is disclosed.
    Type: Grant
    Filed: December 12, 1996
    Date of Patent: May 19, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Charles Robert Bettler, Howard Wayne Jacobson, Michael R. Baloga, Max H. Lewis
  • Polytype electroconductive powders
    Patent number: 5716553
    Abstract: The disclosure relates broadly to a new class or type of electroconductive powders (ECP), designated as Polytype ECP (PECP), comprising intimate mixtures of several types of ECP powders. PECP mixtures possess a lower electrical resistivity, or a higher electroconductivity, than would be expected from the weighted average of the component ECP powders. PECP are multi-component and may contain many different types of ECP. ECP components of the PECP can be selected from at least one member of the group consisting of crystallites of tin oxide containing antimony in solid solution, crystallites of antimony-containing tin oxide with uniformly distributed amorphous silica, two dimensional networks of crystallites of antimony-containing tin oxide in a unique association with amorphous silica or silica-containing material, filler materials, metal coated powders, conventional ECP materials such as carbon, aluminum powder, among others.
    Type: Grant
    Filed: May 15, 1996
    Date of Patent: February 10, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Oswald Robert Bergmann, Carl Chen, Howard Wayne Jacobson
  • Surface-coated particulate additives for polymers
    Patent number: 5643592
    Abstract: Finely-divided particulate additives for polymers with a surface coating comprised of a compound selected from the group consisting of esters of difunctional C.sub.6 -C.sub.40 aliphatic and aromatic carboxylic acids and triesters of phosphoric acid.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: July 1, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Howard Wayne Jacobson, Joseph V. Kurian, Scott Thomas Sackinger, Chandrakant Shantilal Shah
  • Amorphous silicon nitride composition containing carbon, and vapor phase process
    Patent number: 4036653
    Abstract: An amorphous silicon nitride composition consisting essentially of from 95.0% to 99.9% by weight of amorphous silicon nitride and from 0.1% to 5.0% of carbon prepared by the vapor phase reaction of silicon tetrachloride, ammonia, and a gaseous hydrocarbon at temperatures from 1000.degree.C. to 1500.degree.C. This composition is particularly useful in the preparation of fully dense ceramics requiring high strength at elevated temperatures.
    Type: Grant
    Filed: May 28, 1975
    Date of Patent: July 19, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Howard Wayne Jacobson
  • Process for producing a particulate mullite fibril containing composition
    Patent number: 3993499
    Abstract: Single crystal mullite fibrils having a diameter of about 3-100 nanometers, a length of about 0.05-2 microns and a length-to-diameter ratio of about 5-100:1 prepared by heating an intimate mixture of alumina and silica sources in the presence of an alkali metal salt flux to a temperature of about 750.degree.-1200.degree. C.
    Type: Grant
    Filed: July 16, 1975
    Date of Patent: November 23, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Howard Wayne Jacobson, George Leoutsacos Lewis
  • Mullite fibrils
    Patent number: 3951677
    Abstract: Single crystal mullite fibrils having a diameter of about 3-100 nanometers, a length of about 0.05-2 microns and a length-to-diameter ratio of about 5-100:1 prepared by heating an intimate mixture of alumina and silica sources in the presence of an alkali metal salt flux to a temperature of about 750.degree.-1200.degree.C.
    Type: Grant
    Filed: October 4, 1974
    Date of Patent: April 20, 1976
    Inventors: Howard Wayne Jacobson, George Leoutsacos Lewis