Inventor · disambiguated record
Shigekazu Otomo
Also filed as: OTOMO SHIGEKAZU
35 granted patents·579 citations·filing 1979–2003
98Inventor score
Top patents by PatentIndex Score
35 records- 0192US4814921AMultilayered magnetic films and thin-film magnetic heads using the same as a poleHITACHI LTD·Filed 1988·Granted Mar 21, 1989·61 cites·18 claims
- 0289US4935311AMagnetic multilayered film and magnetic head using the sameHITACHI LTD·Filed 1988·Granted Jun 19, 1990·36 cites·15 claims
- 0388US4772976AProcess for preparing magnetic layer and magnetic head prepared using the sameHITACHI LTD·Filed 1985·Granted Sep 20, 1988·31 cites·8 claims
- 0488US4748089AMultilayered ferromagnetic amorphous alloy film and magnetic head employing the sameHITACHI LTD·Filed 1984·Granted May 31, 1988·30 cites·17 claims
- 0588US4559572AMagnetic head and method of fabricating sameHITACHI LTD·Filed 1984·Granted Dec 17, 1985·29 cites·6 claims
- 0686US4610935AMagnetic film structureHITACHI LTD·Filed 1984·Granted Sep 9, 1986·41 cites·24 claims
- 0780US4306908AFerromagnetic amorphous alloyHITACHI LTD·Filed 1980·Granted Dec 22, 1981·20 cites·11 claims
- 0877US4656547AComposite type magnetic head for recording and reproducing high frequency signalsHITACHI LTD·Filed 1984·Granted Apr 7, 1987·19 cites·13 claims
- 0976US4858049AMagnetic film and magnetic head using the sameHITACHI LTD·Filed 1987·Granted Aug 15, 1989·19 cites·28 claims
- 1075US5463518AMagnetic head and magnetic recording and reproducing apparatus using a superconducting quantum interference deviceHITACHI LTD·Filed 1991·Granted Oct 31, 1995·24 cites·30 claims
- 1173US4774616AMagnetic head having an integrated recording and playback head and an erasure headHITACHI LTD·Filed 1984·Granted Sep 27, 1988·17 cites·4 claims
- 1273US4411716AAmorphous alloys for magnetic head core and video magnetic head using sameHITACHI LTD·Filed 1981·Granted Oct 25, 1983·16 cites·15 claims
- 1370US4920013AMagnetic Multilayer structureHITACHI LTD·Filed 1987·Granted Apr 24, 1990·18 cites·9 claims
- 1469US7154714B2Recording/reproducing separated type magnetic head having differential bias type magnetic domain control structureHITACHI GLOBAL STORAGE TECH·Filed 2003·Granted Dec 26, 2006·7 cites·14 claims
- 1569US4731683AMagnetic recording and reproducing system with composite magnetic headHITACHI LTD·Filed 1985·Granted Mar 15, 1988·16 cites·4 claims
- 1668US4935314AFerromagnetic film and magnetic head using the sameHITACHI LTD·Filed 1988·Granted Jun 19, 1990·22 cites·7 claims
- 1767US4803338AMagnetic head having improved track width narrowing groovesHITACHI LTD·Filed 1987·Granted Feb 7, 1989·14 cites·19 claims
- 1866US4851942AFloating magnetic head having a magnetic core buried in a channel on an air bearing railHITACHI LTD·Filed 1987·Granted Jul 25, 1989·15 cites·6 claims
- 1961US4894098AProcess for preparing magnetic layer and magnetic head prepared using the sameHITACHI LTD·Filed 1988·Granted Jan 16, 1990·9 cites·18 claims
- 2061US4769729AMagnetic head having ferromagnetic amorphous alloy multi-layered filmHITACHI LTD·Filed 1986·Granted Sep 6, 1988·11 cites·5 claims
- 2160US4943879AThin film magnetic head including magnetic layers having high saturation magnetic flux density and metal film for avoiding deterioration during manufacturingHITACHI LTD·Filed 1987·Granted Jul 24, 1990·11 cites·17 claims
- 2257US4420348AAmorphous alloy for magnetic head coreHITACHI LTD·Filed 1981·Granted Dec 13, 1983·10 cites·6 claims
- 2356US4972285AAmorphous magnetic alloy of Co-Nb-Zr system and magnetic head made from the sameHITACHI LTD·Filed 1988·Granted Nov 20, 1990·11 cites·8 claims
- 2456US4766039AMagnetic head made from amorphous magnetic filmHITACHI LTD·Filed 1986·Granted Aug 23, 1988·9 cites·19 claims
- 2554US4847715AMagnetic head having short distance between gaps for recording reproducing and erasingHITACHI LTD·Filed 1986·Granted Jul 11, 1989·9 cites·9 claims
- 2653US4891278AFerrromagnetic thin film and magnetic head using itHITACHI LTD·Filed 1987·Granted Jan 2, 1990·15 cites·25 claims
- 2749US6033792ASoft magnetic thin film, and magnetic head and magnetic recording device using the sameHITACHI LTD·Filed 1998·Granted Mar 7, 2000·8 cites·13 claims
- 2849US4745507AComposite type magnetic head with non-magnetic member in coil mounting portionHITACHI LTD·Filed 1986·Granted May 17, 1988·7 cites·18 claims
- 2948US4571652AMagnetic recording and reproducing apparatusHITACHI LTD·Filed 1982·Granted Feb 18, 1986·6 cites·16 claims
- 3047US5873955ASoft magnetic thin film, and magnetic head and magnetic recording device using the sameHITACHI LTD·Filed 1996·Granted Feb 23, 1999·11 cites·11 claims
- 3147US5247415AMagnetic head having main and auxiliary magnetic pathsHITACHI LTD·Filed 1992·Granted Sep 21, 1993·6 cites·34 claims
- 3245US4701819AMagnetic head to effect high density magnetic recordingHITACHI MAXELL·Filed 1985·Granted Oct 20, 1987·7 cites·11 claims
- 3343US4298381AAbrasion-resistive high permeability magnetic alloyHITACHI ELECTRONICS·Filed 1979·Granted Nov 3, 1981·6 cites·4 claims
- 3440US5159505ARotating drum having a center of gravity in registry with an axis of rotationHITACHI LTD·Filed 1990·Granted Oct 27, 1992·4 cites·9 claims
- 3536US5663006ACorrosion-resistant magnetic film and magnetic head using the sameHITACHI LTD·Filed 1993·Granted Sep 2, 1997·4 cites·29 claims
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