Shoji Maruyama

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method of reversible selective manifestation of different states of...
- Patent number 6,656,879
- Issue date Dec 2, 2003
- Ricoh Company, Ltd.
- Kyoji Tsutsui
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Thermally reversible color forming composition and thermally revers...
- Patent number 5,868,821
- Issue date Feb 9, 1999
- Richo Company, Ltd.
- Masafumi Torii
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Image formation materials and image fading prevention method
- Patent number 5,547,802
- Issue date Aug 20, 1996
- Ricoh Company, Ltd.
- Hiromitsu Kawase
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Reversible thermosensitive coloring composition, and recording medi...
- Patent number 5,521,138
- Issue date May 28, 1996
- Ricoh Company, Ltd.
- Masaru Shimada
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Rewritable bar code display medium, and image display method and im...
- Patent number 5,521,371
- Issue date May 28, 1996
- Ricoh Company, Ltd.
- Yoshihiko Hotta
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Reversible thermosensitive coloring composition, recording medium,...
- Patent number 5,432,534
- Issue date Jul 11, 1995
- Ricoh Company, Ltd.
- Shoji Maruyama
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Reversible thermosensitive coloring composition, recording medium,...
- Patent number 5,395,433
- Issue date Mar 7, 1995
- Ricoh Company, Ltd.
- Shoji Maruyama
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Thermosensitive recording material
- Patent number 5,306,687
- Issue date Apr 26, 1994
- Ricoh Company, Ltd.
- Hiromi Furuya
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Reversible thermosensitive recording material
- Patent number 5,306,689
- Issue date Apr 26, 1994
- Ricoh Company, Ltd.
- Shoji Maruyama
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Rewritable bar code display medium, and image display method and im...
- Patent number 5,298,476
- Issue date Mar 29, 1994
- Ricoh Company, Ltd.
- Yoshihiko Hotta
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Reversible thermosensitive coloring recording medium, recording met...
- Patent number 5,296,439
- Issue date Mar 22, 1994
- Ricoh Company, Ltd.
- Shoji Maruyama
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Dithiolate metal complex compound, production method of the same, a...
- Patent number 5,028,467
- Issue date Jul 2, 1991
- Ricoh Company, Ltd.
- Shoji Maruyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Photosensitive material for use in electrophotography
- Patent number 4,250,240
- Issue date Feb 10, 1981
- Ricoh Company, Ltd.
- Masaru Shimada
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
METHOD OF REVERSIBLE SELECTIVE MANIFESTATION OF DIFFERENT STATES OF...
- Publication number 20030114303
- Publication date Jun 19, 2003
- KYOJI TSUTSUI
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS

Shoji Maruyama

Person

Patents Grantslast 30 patents

Method of reversible selective manifestation of different states of...

Thermally reversible color forming composition and thermally revers...

Image formation materials and image fading prevention method

Reversible thermosensitive coloring composition, and recording medi...

Rewritable bar code display medium, and image display method and im...

Reversible thermosensitive coloring composition, recording medium,...

Reversible thermosensitive coloring composition, recording medium,...

Thermosensitive recording material

Reversible thermosensitive recording material

Rewritable bar code display medium, and image display method and im...

Reversible thermosensitive coloring recording medium, recording met...

Dithiolate metal complex compound, production method of the same, a...

Photosensitive material for use in electrophotography

Patents Applicationslast 30 patents

METHOD OF REVERSIBLE SELECTIVE MANIFESTATION OF DIFFERENT STATES OF...