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

Patent Owner(s)

Patent Owner	Address
HIDEFUMI HIRAI	MEGURO-KU TOKYO

International Classification(s)

• C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Hirai, Hidefumi	14-10, Yutenji 1-chome, Meguro-ku, Tokyo, JP	18	268
Kanaka, Keiichi	Tokyo, JP	11	54
Koshirai, Atsunori	Matsudo, JP	14	105
Toshima, Naoki	Tokyo, JP	14	74

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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: 4902776

Preparation of poly-p-phenylene with (1) aluminum chloride and (2) CU(I) Cl or VCl.sub.3

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