Patents by Inventor Charlene A. Hayden

Charlene A. Hayden 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).

  • Method for making nitrogen aromatic oligomers and polymers
    Patent number: 7985830
    Abstract: Methods for synthesizing dimeric or polymeric reaction products of nitrogen aromatics comprise contacting a composition comprising the nitrogen aromatic with a catalyst composition. The catalyst comprises a first metal substrate having a second reduced metal coated on the substrate.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: July 26, 2011
    Assignee: GM Global Technology Operations LLC
    Inventors: Andrew M. Mance, Tao Xie, Belabbes Merzougui, Charlene A. Hayden
  • METHOD FOR MAKING NITROGEN AROMATIC OLIGOMERS AND POLYMERS
    Publication number: 20100105850
    Abstract: Methods for synthesizing dimeric or polymeric reaction products of nitrogen aromatics comprise contacting a composition comprising the nitrogen aromatic with a catalyst composition. The catalyst comprises a first metal substrate having a second reduced metal coated on the substrate.
    Type: Application
    Filed: December 30, 2009
    Publication date: April 29, 2010
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
    Inventors: Andrew M. Mance, Tao Xie, Belabbes Merzougui, Charlene A. Hayden
  • Method for making nitrogen aromatic oligomers and polymers
    Patent number: 7655749
    Abstract: Methods for synthesizing dimeric or higher polymeric reaction products of nitrogen aromatics comprise contacting a composition comprising the nitrogen aromatic with a catalyst composition. The catalyst is in particulate form and comprises a first metal substrate having a second reduced metal coated on the substrate.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: February 2, 2010
    Assignee: GM Global Technology Operations, Inc.
    Inventors: Andrew M. Mance, Tao Xie, Belabbes Merzougui, Charlene A. Hayden
  • Method for making nitrogen aromatic oligomers and polymers
    Publication number: 20070066828
    Abstract: Methods for synthesizing dimeric or higher polymeric reaction products of nitrogen aromatics comprise contacting a composition comprising the nitrogen aromatic with a catalyst composition. The catalyst is in particulate form and comprises a first metal substrate having a second reduced metal coated on the substrate.
    Type: Application
    Filed: September 19, 2005
    Publication date: March 22, 2007
    Inventors: Andrew Mance, Tao Xie, Belabbes Merzougui, Charlene Hayden
  • Magnetorheological fluids with stearate and thiophosphate additives
    Patent number: 6881353
    Abstract: One embodiment of the invention includes an MR fluid of improved durability. The MR fluid is particularly useful in devices that subject the fluid to substantial centrifugal forces, such as large fan clutches. A particular embodiment includes a magnetorheological fluid including a liquid, magnetizable particles, a stearate and a thiophosphate.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: April 19, 2005
    Assignee: General Motors Corporation
    Inventors: John C. Ulicny, Anthony L. Smith, Mark A. Golden, Charlene A. Hayden
  • Magnetorheological fluids with stearate and thiophosphate additives
    Publication number: 20040149953
    Abstract: One embodiment of the invention includes an MR fluid of improved durability. The MR fluid is particularly useful in devices that subject the fluid to substantial centrifugal forces, such as large fan clutches. A particular embodiment includes a magnetorheological fluid including a liquid, magnetizable particles, a stearate and a thiophosphate.
    Type: Application
    Filed: September 15, 2003
    Publication date: August 5, 2004
    Inventors: John C. Ulicny, Anthony L. Smith, Mark A. Golden, Charlene A. Hayden
  • Magnetorheological fluids with stearate and thiophosphate additives
    Publication number: 20040135115
    Abstract: One embodiment of the invention includes an MR fluid of improved durability. The MR fluid is particularly useful in devices that subject the fluid to substantial centrifugal forces, such as large fan clutches. A particular embodiment includes a magnetorheological fluid including a liquid, magnetizable particles, a stearate and a thiophosphate.
    Type: Application
    Filed: June 17, 2003
    Publication date: July 15, 2004
    Applicant: General Motors Corporation
    Inventors: John C. Ulicny, Anthony L. Smith, Mark A. Golden, Charlene A. Hayden
  • Magnetorheological fluids with stearate and thiophosphate additives
    Publication number: 20030025100
    Abstract: One embodiment of the invention includes an MR fluid of improved durability. The MR fluid is particularly useful in devices that subject the fluid to substantial centrifugal forces, such as large fan clutches. A particular embodiment includes a magnetorheological fluid including a liquid, magnetizable particles, a stearate and a thiophosphate.
    Type: Application
    Filed: August 6, 2001
    Publication date: February 6, 2003
    Inventors: John C. Ulicny, Anthony L. Smith, Mark A. Golden, Charlene A. Hayden