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William Heilmann
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Houston, TX, US
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last 30 patents
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Patent Grant
Ethylene-alpha-olefin polymers, processes and uses
Patent number
6,388,148
Issue date
May 14, 2002
Pennzoil-Quaker State Company
William Heilmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Patent Grant
Ethylene-alpha-olefin polymers, processes and uses
Patent number
6,262,324
Issue date
Jul 17, 2001
Pennzoil-Quaker State Company
William Heilmann
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...