Teruo Tohma

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Tsurugashima, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for producing a luminous element of III-group nitride
- Patent number 5,496,766
- Issue date Mar 5, 1996
- Pioneer Electronic Corporation
- Hiroshi Amano
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical fiber nonlinear wavelength modulator device
- Patent number 5,022,738
- Issue date Jun 11, 1991
- Sumitomo Electric Industries, Ltd.
- Naota Uenishi
- G02 - OPTICS
Information Patent Grant
Acoustic vibrating element of graphite and method of manufacturing...
- Patent number 4,395,814
- Issue date Aug 2, 1983
- Pioneer Electronic Corporation
- Tsunehiro Tsukagoshi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Surface hardening method
- Patent number 4,196,022
- Issue date Apr 1, 1980
- Pioneer Electronic Corporation
- Teruo Tohma
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Magnetic head using a semiconductor element
- Patent number 4,155,106
- Issue date May 15, 1979
- Pioneer Electronic Corporation
- Hiroshi Muraoka
- G11 - INFORMATION STORAGE