Hideyasu Yamanaka

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Ayase-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Light source device for an image forming apparatus
- Patent number 6,502,960
- Issue date Jan 7, 2003
- Ricoh Company, Ltd.
- Yasuhiro Naoe
- G02 - OPTICS
Information Patent Grant
Light source device for an image forming apparatus
- Patent number 6,299,331
- Issue date Oct 9, 2001
- Ricoh Company, Ltd.
- Yasuhiro Naoe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Light source device for an image forming apparatus
- Patent number 6,179,445
- Issue date Jan 30, 2001
- Ricoh Company, Ltd.
- Yasuhiro Naoe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Light source device for an image forming apparatus
- Patent number 5,997,153
- Issue date Dec 7, 1999
- Ricoh Company, Ltd.
- Yasuhiro Naoe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Light source device for an image forming apparatus
- Patent number 5,758,950
- Issue date Jun 2, 1998
- Ricoh Company, Ltd.
- Yasuhiro Naoe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Stepping motor drive apparatus
- Patent number 4,339,702
- Issue date Jul 13, 1982
- Ricoh Company, Ltd.
- Shigeyuki Araki
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Light source device for an image forming apparatus
- Publication number 20020006041
- Publication date Jan 17, 2002
- RICOH COMPANY, LTD.
- Yasuhiro Naoe
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS