Membership
Tour
Register
Log in
Hirotoshi Niguchi
Follow
Person
Osaka, JP
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Erasable optical disk media and method of recording/erasing the same
Patent number
5,118,541
Issue date
Jun 2, 1992
Matsushita Electric Industrial Co., Ltd.
Osamu Yamamoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Speaker diaphragm and method of preparation of the same
Patent number
4,291,781
Issue date
Sep 29, 1981
Matsushita Electric Industrial Co., Ltd.
Hirotoshi Niguchi
D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information
Patent Grant
Speaker diaphragm molded from poly-biphenol phthalate type resin film
Patent number
4,173,701
Issue date
Nov 6, 1979
Matsushita Electric Industrial Co., Ltd.
Kosaku Murata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Acoustic diaphragm with polyurethane elastomer coating
Patent number
4,140,203
Issue date
Feb 20, 1979
Matsushita Electric Industrial Co., Ltd.
Hirotoshi Niguchi
G10 - MUSICAL INSTRUMENTS ACOUSTICS