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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
CHEVRON RESEARCH COMPANY	A CORP OF DE SAN FRANCISCO CA

International Classification(s)

• C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Bakshi, Kiran R	Murrysville, PA	7	58
Barie, Walter P	Glenshaw, PA	2	21
Sabourin, Edward T	Allison Park, PA	30	200

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent No: 4524171

Preparation of an aromatic polyimide acid by solution polymerization using propylene glycol methyl ether

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