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

Patent Owner(s)

• RICOH COMPANY, LTD.

International Classification(s)

• G03G:ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Iwai, Sadayuki	Yokohama, JP	28	570
Kumano, Katsufumi	Yokohama, JP	6	158
Ohta, Eiichi	Mishima, JP	41	765
Someya, Yukimichi	Machida, JP	72	935
Sugimoto, Naomi	Kawasaki, JP	61	1266

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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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
May 11, 2010	US,7715760,B2   US7715760B2	GRANTED PATENT AS SECOND PUBLICATION
May 07, 2009	US,20090116872,A1   US20090116872A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7715760

Charging device, and process cartridge and image forming apparatus using the same

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