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

Patent Owner(s)

Patent Owner	Address
KAO SOAP CO LTD	1 NIHONBASHI-KAYABACHO 1-CHOME CHUO-KU TOKYO

International Classification(s)

• A61F:FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES....

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• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Kawabuchi, Kenji	Wakayama, JP	1	57
Ohki, Kenji	Utsunomiya, JP	13	156
Sagae, Masayuki	Ichikaimachi, JP	4	161
Tokuyama, Mistru	Utsunomiya, JP	1	57

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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: 4347844

Porous sheet and process for preparation thereof

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