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

Patent Owner(s)

Patent Owner	Address
NATIONAL UNIVERSITY CORPORATION HOKKAIDO UNIVERSITY	KITA 8-JYO NISHI 5-CHOME KITA-KU SAPPORO-SHI HOKKAIDO 060-0808
DAICEL CORPORATION	3-1 OFUKA-CHO KITA-KU OSAKA-SHI OSAKA 5300011 ?5300011

International Classification(s)

• C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
• C08H:DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
• C08B:POLYSACCHARIDES; DERIVATIVES THEREOF
• C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
KONNO, Haruo	Kita-ku, Tokyo, JP	4	11
SHIMAMOTO, Shu	Minato-ku, Tokyo, JP	28	191
URAKI, Yasumitsu	Sapporo-shi, Hokkaido, JP	5	10

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Nov 5, 2025
7.5 Year Payment	$3600.00	$1800.00	$900.00	Nov 5, 2029
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Nov 5, 2033

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 3.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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 Application No: 2022/0135,706

CELLULOSE ACETATE FILM AND METHOD FOR PRODUCING CELLULOSE ACETATE FILM

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