Patents by Inventor Brian Carl Auman

Brian Carl Auman 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).

High modulus polyimide compositions useful as dielectric substrates for electronics applications, and methods relating thereto

Patent number: 6956098

Abstract: The substrates of the present invention comprise a polyimide base polymer derived at least in part from collinear monomers together with crankshaft monomers. The resulting polyimide material has been found to provide advantageous properties, particularly for electronics type applications.

Type: Grant

Filed: September 20, 2002

Date of Patent: October 18, 2005

Assignee: E. I. du Pont de Nemours and Company

Inventors: John Donald Summers, Richard Frederich Sutton, Jr., Brian Carl Auman
High modulus polyimide compositions useful as dielectric substrates for electronics applications, and methods relating thereto

Publication number: 20040058172

Abstract: The substrates of the present invention comprise a polyimide base polymer derived at least in part from collinear monomers together with crankshaft monomers. The resulting polyimide material has been found to provide advantageous properties, particularly for electronics type applications.

Type: Application

Filed: September 20, 2002

Publication date: March 25, 2004

Inventors: John Donald Summers, Richard Frederich Sutton, Brian Carl Auman
Polymide photo alignment film from 3,3?,4,4?-benzophenone tetracarboxylic dianhydride and ortho-substituted aromatic diamines for liquid crystal displays

Patent number: 6348245

Abstract: The present invention relates to polyimide photo alignment films for liquid crystal display devices comprising an aromatic tetracarboxylic dianhydride component containing 3,3′,4,4′-benzophenone tetracarboxylic dianhydride and an aromatic diamine component containing at least one diamine of the group of fofmulae AI to AIII as given in the text. Further display devices and methods of their fabrication employing a photo alignment process are disclosed.

Type: Grant

Filed: August 25, 2000

Date of Patent: February 19, 2002

Assignee: E. I. du Pont de Nemours and Company

Inventors: Brian Carl Auman, Melvin P. Zussman, Bernd Fiebranz, Edgar Böhm
Polyimide photo alignment film from 3,3,4,4-benzophenone tetracarboxylic dianhydride and ortho-substituted aromatic diamines for liquid crystal displays

Patent number: 6139926

Abstract: The present invention relates to polyimide photo alignment films for liquid crystal display devices comprising an aromatic tetracarboxylic dianhydride component containing 3,3',4,4'-benzophenone tetracarboxylic dianhydride and an aromatic diamine component containing at least one diamine of the group of formulae AI to AIII as given in the text. Further display devices and methods of their fabrication employing a photo alignment process are disclosed.

Type: Grant

Filed: May 21, 1998

Date of Patent: October 31, 2000

Assignees: E. I. du Pont de Nemours and Company, Merck Patent GmbH

Inventors: Brian Carl Auman, Melvin P. Zussman, Bernd Fiebranz, Edgar Bohm
Polyimide film from pyromellitic dianhydride and a bis (4-aminophenoxy) aromatic compound as an alignment layer for liquid crystal displays

Patent number: 5856432

Abstract: A polyimide alignment film based on pyromellitic dianhydride and a bis(4-aminophenoxy) aromatic compound, such as 1,3-bis(4-aminophenoxy)benzene or 1,4-bis(4-aminophenoxy)benzene, providing low tilt angles of from 1 to 2 degrees when used in liquid crystal displays.

Type: Grant

Filed: November 20, 1997

Date of Patent: January 5, 1999

Assignees: E. I. duPont de Nemours and Company, Merck Patent GmbH

Inventors: Brian Carl Auman, Edgar Bohm
Polyimide alignment film from 2,2-BIS (3,4-dicarboxyphenyl)--hexafluoropropane dianhydride and ortho-substituted aromatic diamines for active matrix liquid crystal displays

Patent number: 5759442

Abstract: A polyimide alignment film based on 2,2-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride and ortho-substituted aromatic diamines, such as 2,3,5,6-tetramethyl-p-phenylene diamine, 2,4,6-trimethyl-m-phenylene diamine and 1,5-diaminonaphthalene, providing high voltage holding ratio and high tilt angle when used in active matrix liquid crystal displays.

Type: Grant

Filed: March 7, 1997

Date of Patent: June 2, 1998

Assignees: E. I. du Pont de Nemours and Company, Merck Patent GmbH

Inventors: Brian Carl Auman, Edgar Bohm, Bernd Fiebranz
Polyimide film from pyromellitic dianhydride and a bis(4-aminophenoxy) aromatic compound as an alignment layer for liquid crystal displays

Patent number: 5731404

Abstract: A polyimide alignment film based on pyromellitic dianhydride and a bis(4-aminophenoxy) aromatic compound, such as 1,3-bis(4-aminophenoxy)benzene or 1,4-bis(4-aminophenoxy)benzene, providing low tilt angles of from to 2 degrees when used in liquid crystal displays.

Type: Grant

Filed: November 1, 1995

Date of Patent: March 24, 1998

Assignees: E. I. du Pont de Nemours and Company, Merck Patent GmbH

Inventors: Brian Carl Auman, Edgar Bohm
Polyimide films from pyromellitic dianhydride and 2-2'-bis(perfluoroalkoxy)benzidines as alignment layers for liquid crystal displays

Patent number: 5670609

Abstract: A polyimide alignment film based on pyromellitic dianhydride and a 2,2'-bis(perfluoroalkoxy)benzidine, as major components, for use in liquid crystal display devices.

Type: Grant

Filed: August 8, 1995

Date of Patent: September 23, 1997

Assignee: E. I. Du Pont de Nemours and Company

Inventors: Brian Carl Auman, Edgar Bohm