Inventor
Hirotoshi Niguchi
Inventor
Kashihara, JP
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Rprimary
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers33%
Y10TTechnical subjects covered by former us classification22%
D06MTreatment, not provided for elsewhere in class d06, of fibres, threads, yarns, fabrics, feathers or fibrous goods made from such materials11%
G10KSound-producing devices11%
G11BInformation storage based on relative movement between record carrier and transducer11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
PatentTitleYear
5,118,541'Erasable optical disk media and method of recording/erasing the same'19924,291,781'Speaker diaphragm and method of preparation of the same'19814,173,701'Speaker diaphragm molded from poly-biphenol phthalate type resin film'19794,140,203'Acoustic diaphragm with polyurethane elastomer coating'1979Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1979–1992Patents assigned to MATSUSHITA ELECTRIC INDUSTRIAL CO LTD (4)· patent assignee history
1979–1992Based in Kashihara, JP· patent location history
1979Based in Osaka, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MATSUSHITA ELECTRIC INDUSTRIAL CO LTD | 4 | 1979–1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kashihara, JP | 3 | 1979–1992 |
| Osaka, JP | 1 | 1979 |