Inventor
Seiichi Asada
Inventor
Osaka, JP
Overview
10→
Patents
1977–2003
Patent span
General tagging of new technological developments
Primary field (CPC Y)
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G11Bprimary
G11BInformation storage based on relative movement between record carrier and transducer17%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
Y10TTechnical subjects covered by former us classification17%
H01GCapacitors13%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution13%
H01FMagnets9%
B22FWorking metallic powder4%
B41MPrinting, duplicating, marking, or copying processes4%
Y02TClimate change mitigation technologies related to transportation4%
PatentTitleYear
6,562,313'Electrode material for electrochemical capacitor, electrochemical capacitor comprising the same, and method for the production of the same'20036,282,081'Electrode for capacitor, method for producing the same and capacitor'20016,275,371'Electrode material for electrochemical capacitor, electrochemical capacitor comprising the same, and method for the production of the same'20015,246,766'Thermal recording medium'19934,957,825'Magnetic recording medium and process for producing the same'19904,956,220'Magnetic recording medium'19904,874,668'Magnetic powder and magnetic recording medium comprising the same'19894,743,491'Perpendicular magnetic recording medium and fabrication method therefor'19884,262,037'Method of producing ferromagnetic metal powder'19814,043,846'Method of producing ferromagnetic metal powder by gaseous reduction of silicon compound-coated raw material'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1988Patents assigned to HITACHI LTD (3)· patent assignee history
1977–1981Based in Hachioji, JP· patent location history
1988–2003Patents assigned to HITACHI MAXELL (7)· patent assignee history
1988–1990Based in Kyoto, JP· patent location history
1989–2003Based in Osaka, JP· patent location history
1993Based in Mishima, JP· patent location history
2001Based in Mishima-shi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI MAXELL | 7 | 1988–2003 |
| HITACHI LTD | 3 | 1977–1988 |
Locations
| Location | Patents | Span |
|---|---|---|
| Osaka, JP | 4 | 1989–2003 |
| Kyoto, JP | 2 | 1988–1990 |
| Hachioji, JP | 2 | 1977–1981 |
| Mishima-shi, JP | 1 | 2001 |
| Mishima, JP | 1 | 1993 |