Tadao Katsuragawa

Person

Yamato, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Magneto-optical device
- Patent number 8,068,387
- Issue date Nov 29, 2011
- Ricoh Company, Ltd.
- Tadao Katsuragawa
- G02 - OPTICS
Information Patent Grant
Light control window
- Patent number 6,993,872
- Issue date Feb 7, 2006
- Ricoh Company, Ltd.
- Tadao Katsuragawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Magneto-optical light modulator
- Patent number 6,243,193
- Issue date Jun 5, 2001
- Ricoh Company, Ltd.
- Tadao Katsuragawa
- G02 - OPTICS
Information Patent Grant
Magnetic recording medium
- Patent number 6,187,431
- Issue date Feb 13, 2001
- Ricoh Company, Ltd.
- Tadao Katsuragawa
- G02 - OPTICS
Information Patent Grant
Magneto-optical recording medium having a plurality of ferromagnect...
- Patent number 6,055,215
- Issue date Apr 25, 2000
- Ricoh Company, Ltd.
- Tadao Katsuragawa
- G02 - OPTICS
Information Patent Grant
Light polarizer and method of producing the light polarizer
- Patent number 5,991,075
- Issue date Nov 23, 1999
- Ricoh Company, Ltd.
- Tadao Katsuragawa
- G02 - OPTICS
Information Patent Grant
Magneto-optic recording media and process for producing the same
- Patent number 5,112,701
- Issue date May 12, 1992
- Ricoh Company, Ltd.
- Tadao Katsuragawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Apparatus for forming a thin film
- Patent number 5,112,466
- Issue date May 12, 1992
- Ricoh Company, Ltd.
- Wasaburo Ohta
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Apparatus for forming a thin film
- Patent number 4,960,072
- Issue date Oct 2, 1990
- Ricoh Company, Ltd.
- Wasaburo Ohta
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...

Tadao Katsuragawa

Person

Patents Grantslast 30 patents

Magneto-optical device

Light control window

Magneto-optical light modulator

Magnetic recording medium

Magneto-optical recording medium having a plurality of ferromagnect...

Light polarizer and method of producing the light polarizer

Magneto-optic recording media and process for producing the same

Apparatus for forming a thin film

Apparatus for forming a thin film