Motoharu Tanaka

Person

Shizuoka, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image removing method, image removing device, and image forming app...
- Patent number 7,386,266
- Issue date Jun 10, 2008
- Ricoh Company Limited
- Masashi Nagayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image removing method, image removing device, and image forming app...
- Patent number 7,060,407
- Issue date Jun 13, 2006
- Ricoh Company, Limited
- Masashi Nagayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Carrier and developer for developing latent electrostatic images
- Patent number 6,939,654
- Issue date Sep 6, 2005
- Ricoh Company, Ltd.
- Akihiro Kotsugai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Magneto-optical recording medium and recording method using the same
- Patent number 5,736,265
- Issue date Apr 7, 1998
- Ricoh Company, Ltd.
- Motoharu Tanaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording medium having two magnetic layers with th...
- Patent number 5,487,046
- Issue date Jan 23, 1996
- Ricoh Company, Ltd.
- Atsuyuki Watada
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording method
- Patent number 5,459,701
- Issue date Oct 17, 1995
- Ricoh Company, Ltd.
- Toshiaki Tokita
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording medium
- Patent number 5,430,696
- Issue date Jul 4, 1995
- Ricoh Company, Ltd.
- Toshiaki Tokita
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording medium having first and second magnetic l...
- Patent number 5,420,833
- Issue date May 30, 1995
- Ricoh Company, Ltd.
- Motoharu Tanaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording method and magneto-optical recording medium
- Patent number 5,369,629
- Issue date Nov 29, 1994
- Ricoh Company, Ltd.
- Atsuyuki Watada
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording method and recording medium for use in th...
- Patent number 5,337,293
- Issue date Aug 9, 1994
- Ricoh Company, Ltd.
- Toshiaki Tokita
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording method with switching and maintaining per...
- Patent number 5,323,366
- Issue date Jun 21, 1994
- Ricoh Company, Ltd.
- Atsuyuki Watada
- G11 - INFORMATION STORAGE
Information Patent Grant
Three-dimensional magnetic memory medium and method for initial set...
- Patent number 5,103,422
- Issue date Apr 7, 1992
- Ricoh Compnay, Ltd.
- Toshiaki Tokita
- G11 - INFORMATION STORAGE
Information Patent Grant
Metal oxide magnetic substance and a magnetic film consisting there...
- Patent number 4,670,322
- Issue date Jun 2, 1987
- Ricoh Company, Ltd.
- Hitoshi Nakamura
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Magneto-optic recording medium having a metal oxide recording layer
- Patent number 4,670,323
- Issue date Jun 2, 1987
- Ricoh Company, Ltd.
- Hitoshi Nakamura
- G11 - INFORMATION STORAGE
Information Patent Grant
Magneto-optical recording medium having recording guide tracks
- Patent number 4,617,601
- Issue date Oct 14, 1986
- Ricoh Company, Ltd.
- Motoharu Tanaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Ferrimagnetic oxides and magneto-optical recording medium employing...
- Patent number 4,562,105
- Issue date Dec 31, 1985
- Ricoh Company, Ltd.
- Hazime Machida
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Magneto-optical recording medium having a ferrimagnetic recording l...
- Patent number 4,544,602
- Issue date Oct 1, 1985
- Ricoh Company, Ltd.
- Hiroshi Kobayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Thermomagnetic recording
- Patent number 4,466,004
- Issue date Aug 14, 1984
- Ricoh Company, Ltd.
- Hiroshi Kobayashi
- G11 - INFORMATION STORAGE
Information Patent Grant
Magnetic recording and playback apparatus of perpendicular recordin...
- Patent number 4,413,297
- Issue date Nov 1, 1983
- Ricoh Company, Ltd.
- Motoharu Tanaka
- G11 - INFORMATION STORAGE
Information Patent Grant
Dry developing powder including toner powders of different particle...
- Patent number 4,111,823
- Issue date Sep 5, 1978
- Ricoh Co., Ltd.
- Kazuo Kobayashi
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Image removing method, image removing device, and image forming app...
- Publication number 20060127152
- Publication date Jun 15, 2006
- Masashi Nagayama
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Application
Carrier and developer for developing latent electrostatic images
- Publication number 20040142269
- Publication date Jul 22, 2004
- Akihiro Kotsugai
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image removing method, image removing device, and image forming app...
- Publication number 20040121254
- Publication date Jun 24, 2004
- Masashi Nagayama
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Motoharu Tanaka

Person

Patents Grantslast 30 patents

Image removing method, image removing device, and image forming app...

Image removing method, image removing device, and image forming app...

Carrier and developer for developing latent electrostatic images

Magneto-optical recording medium and recording method using the same

Magneto-optical recording medium having two magnetic layers with th...

Magneto-optical recording method

Magneto-optical recording medium

Magneto-optical recording medium having first and second magnetic l...

Magneto-optical recording method and magneto-optical recording medium

Magneto-optical recording method and recording medium for use in th...

Magneto-optical recording method with switching and maintaining per...

Three-dimensional magnetic memory medium and method for initial set...

Metal oxide magnetic substance and a magnetic film consisting there...

Magneto-optic recording medium having a metal oxide recording layer

Magneto-optical recording medium having recording guide tracks

Ferrimagnetic oxides and magneto-optical recording medium employing...

Magneto-optical recording medium having a ferrimagnetic recording l...

Thermomagnetic recording

Magnetic recording and playback apparatus of perpendicular recordin...

Dry developing powder including toner powders of different particle...

Patents Applicationslast 30 patents

Image removing method, image removing device, and image forming app...

Carrier and developer for developing latent electrostatic images

Image removing method, image removing device, and image forming app...