Inventor
Fumio Murayama
Inventor
Yamagata, JP
Overview
Patents· 17 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 transducers45%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds10%
C09DCoating compositions, e.g. paints, varnishes or lacquers10%
C09KMaterials for miscellaneous applications, not provided for elsewhere10%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for6%
G10KSound-producing devices6%
Y10TTechnical subjects covered by former us classification6%
B60QArrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general3%
H03GControl of amplification3%
PatentTitleYear
6,817,084'Method for manufacturing a speaker apparatus'20046,665,414'Speaker system and cooling device therefor'20036,343,136'Speaker apparatus and manufacturing method thereof'20026,030,561'Methods for making a loudspeaker vibrating diaphragm'20005,822,444'Loudspeaker'19985,793,002'Loudspeaker vibrating diaphragm and methods for its production'19985,297,212'Loudspeaker system installed on an automobile door and including a woofer and a tweeter'19945,008,945'Water-proof speaker unit'19914,965,837'Environmentally resistant loudspeaker'19904,953,220'Mobile speaker system having an illumination effect'19904,924,965'Speaker system'19904,837,835'Speaker system for motor vehicles with an alarm device'19894,821,331'Coaxial speaker unit'19894,451,928'Multi-speaker system for use in automobiles'19844,104,223'Aqueous epoxy resin paint composition'19784,073,762'Aqueous epoxy resin paint composition'19783,983,056'Aqueous epoxy resin paint composition'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1978Patents assigned to DAINIPPON TORYO KK (2)· patent assignee history
1976–1978Based in Yokohama, JP· patent location history
1978Patents assigned to HOSODA MINORU (1)· patent assignee history
1978Patents assigned to ISAYAMA KOHEI (1)· patent assignee history
1978Based in Hodogaya-ku, Yokohama-shi, Kanagawa-ken, JP· patent location history
1984–2004Patents assigned to PIONEER ELECTRONIC CORP (13)· patent assignee history
1984–2000Based in Yamagata, JP· patent location history
1989–2004Based in Tendo, JP· patent location history
1990Based in Tendou, JP· patent location history
1998–2002Patents assigned to PIONEER ELECTRONIC TOHOKU (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PIONEER ELECTRONIC CORP | 13 | 1984–2004 |
| PIONEER ELECTRONIC TOHOKU | 3 | 1998–2002 |
| DAINIPPON TORYO KK | 2 | 1976–1978 |
| HOSODA MINORU | 1 | 1978 |
| ISAYAMA KOHEI | 1 | 1978 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yamagata, JP | 8 | 1984–2000 |
| Tendo, JP | 5 | 1989–2004 |
| Yokohama, JP | 2 | 1976–1978 |
| Tendou, JP | 1 | 1990 |
| Hodogaya-ku, Yokohama-shi, Kanagawa-ken, JP | 1 | 1978 |