Inventor
Kaneyuki Okamoto
Inventor
Hitachinaka, JP
Overview
Patents· 25 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 transducer39%
H04NPictorial communication, e.g. television18%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
B60RVehicles, vehicle fittings, or vehicle parts, not otherwise provided for5%
B60WConjoint control of vehicle sub-units of different type or different function5%
H02HEmergency protective circuit arrangements5%
H03KPulse technique5%
B60LPropulsion of electrically-propelled vehicles3%
F02DControlling combustion engines3%
H01FMagnets3%
PatentTitleYear
8,144,447'Electromagnetic load controller'20127,282,810'Power supplying apparatus for vehicle and intensive wiring apparatus'20077,209,631'Image recording/reproducing apparatus'20076,791,207'Power supplying apparatus for vehicle and intensive wiring apparatus'20046,373,671'Apparatus with an over-current shutdown means and an over-temperature shutdown means'20026,320,275'Power-feed control apparatus provided in a vehicle'20016,275,646'Image recording/reproducing apparatus'20016,205,010'Switch circuit having protection function to interrupt input of control signal'20016,158,682'Tape running apparatus'20006,089,485'Apparatus or method for controlling tape speed'20006,002,831'Image recording/reproducing apparatus'19995,839,683'Apparatus for controlling tape speed'19985,241,434'Magnetic recording signal reproducing apparatus'19935,138,505'Tracking apparatus for a magnetic recording and playback apparatus with independent control of audio head with respect to video head'19925,057,949'Digital magnetic reproducing apparatus with variable tape speed'19914,984,083'Image processing system'19914,912,571'A memory controlling apparatus for a magnetic recording and reproducing apparatus'19904,855,812'Picture synthesizing apparatus with gain control system'19894,777,543'Tracking correction for a rotary head by detection of the minimum signal level'19884,774,598'Slow-motion device of magnetic recording and reproducing apparatus'19884,757,394'Auto-tracking apparatus of a magnetic recording/reproducing apparatus'19884,737,864'Still picture recording system with noise detection and frame counting during shift from reproduction of picture in motion to reproduction of still picture including an intermediate slow motion mode'19884,707,749'Address code inserting system for video tape recording apparatus'19874,613,914'Auto-tracking method and apparatus of a magnetic recording/reproducing apparatus'19864,543,516'Speed and phase control system'1985Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1985–2012Patents assigned to HITACHI LTD (23)· patent assignee history
1985–1993Based in Katsuta, JP· patent location history
1986Patents assigned to ENGINEERING LTD (1)· patent assignee history
1986Patents assigned to HITACHI MICROCOMPUTER HITACHI (1)· patent assignee history
1988Patents assigned to HITACHI MICROCUMPUTER ENG (1)· patent assignee history
1992Based in Ibaragi, JP· patent location history
1998–2012Based in Hitachinaka, JP· patent location history
2001–2007Patents assigned to HITACHI CAR ENG CO LTD (3)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 23 | 1985–2012 |
| HITACHI CAR ENG CO LTD | 3 | 2001–2007 |
| ENGINEERING LTD | 1 | 1986 |
| HITACHI MICROCOMPUTER HITACHI | 1 | 1986 |
| HITACHI MICROCUMPUTER ENG | 1 | 1988 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hitachinaka, JP | 12 | 1998–2012 |
| Katsuta, JP | 12 | 1985–1993 |
| Ibaragi, JP | 1 | 1992 |