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James B. Johnson
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Washington, PA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Polycarbonate composition resistant to gamma radiation
Patent number
6,197,853
Issue date
Mar 6, 2001
Bayer Corporation
Daniel H. Bolton
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Melt-stable pigmented polycarbonate molding composition
Patent number
6,153,685
Issue date
Nov 28, 2000
Bayer Corporation
Sivaram Krishnan
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Hydrolysis-stable polycarbonate molding composition
Patent number
6,107,375
Issue date
Aug 22, 2000
Bayer Corporation
Sivaram Krishnan
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Thermoplastic composition suitable for optical applications having...
Patent number
6,103,777
Issue date
Aug 15, 2000
Bayer Corporation
Sivaram Krishnan
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polycarbonate composition useful in optical storage applications
Patent number
6,069,225
Issue date
May 30, 2000
Bayer Corporation
Michael A. Gerace
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Photochromic ophthalmic lens
Patent number
6,065,836
Issue date
May 23, 2000
Bayer Corporation
Sivaram Krishnan
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polycarbonate compositions having good mold-release properties
Patent number
6,008,280
Issue date
Dec 28, 1999
Bayer Corporation
Sivaram Krishnan
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Photochromic compositions having improved fade rate
Patent number
5,998,520
Issue date
Dec 7, 1999
Bayer Corporation
Sivaram Krishnan
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polycarbonate compositions having improved release properties
Patent number
5,705,546
Issue date
Jan 6, 1998
Bayer Corporation
Sivaram Krishnan
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Polycarbonate compositions having mold-release properties
Patent number
5,596,034
Issue date
Jan 21, 1997
Bayer Corporation
Sivaram Krishnan
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Melt-stable, pigmented polycarbonate composition
Patent number
5,405,892
Issue date
Apr 11, 1995
Miles Inc.
Sivaram Krishnan
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
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Patent Application
Tinted plastic articles and thermoplastic composition for its prepa...
Publication number
20030144419
Publication date
Jul 31, 2003
Sivaram Krishnan
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Application
Tinted plastic articles and thermoplastic composition for its prepa...
Publication number
20020107334
Publication date
Aug 8, 2002
Sivaram Krishnan
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...