Takehiko Iwaoka

Follow

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Thermosensitive stencil paper and method of producing the same
- Patent number 7,201,938
- Issue date Apr 10, 2007
- Ricoh Company, Ltd.
- Fumiaki Arai
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Heat-sensitive stencil and method of fabricating same
- Patent number 6,403,150
- Issue date Jun 11, 2002
- Ricoh Company, Ltd.
- Masayuki Ohta
- B32 - LAYERED PRODUCTS
Information Patent Grant
Thermosensitive stencil paper and method of producing the same
- Patent number 6,372,332
- Issue date Apr 16, 2002
- Ricoh Company, Ltd.
- Fumiaki Arai
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Heat-sensitive stencil and method of fabricating same
- Patent number 6,096,374
- Issue date Aug 1, 2000
- Ricoh Company, Ltd.
- Masayuki Ohta
- B32 - LAYERED PRODUCTS
Information Patent Grant
Heat-sensitive stencil and method of fabricating same
- Patent number 5,843,560
- Issue date Dec 1, 1998
- Ricoh Company, Ltd.
- Masayuki Ohta
- B32 - LAYERED PRODUCTS

Patents Applicationslast 30 patents

Information Patent Application
Thermosensitive stencil paper and method of producing the same
- Publication number 20020102397
- Publication date Aug 1, 2002
- Fumiaki Arai
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS