Inventor

Yutaka Sugita

Inventor

Tokorozawa, JP

Overview

1976–2017

Patent span

Physics

Primary field (CPC G)

Patents· 64 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H01Fprimary

H01FMagnets20%

G11CStatic stores19%

G11BInformation storage based on relative movement between record carrier and transducer18%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests12%

Y10TTechnical subjects covered by former us classification11%

B82YSpecific uses or applications of nanostructures2%

G01RMeasuring electric variables2%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h102%

G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices2%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h102%

PatentTitleYear

9,758,694'Curable resin composition, cured product thereof, and semiconductor device using the same'2017 5,671,107'Large capacity magnetic disc apparatus with a particular relationship between pole thickness, saturated flux density, and recording wavelength'1997 5,639,547'Magnetic heads and magnetic recording reproducing devices using magnetic laminations'1997 5,583,840'ROM type optical recording medium with a high reflectivity and an optical head operable on ROM, write-one and rewritable disk'1996 5,541,789'Magnetic recording apparatus with magnetic head on slider having applied load larger than buoyant force acting on slider so that gap between magnetic head and magnetic disk is smaller than total thickness of protective layer and lubricating layer on disk'1996 5,475,656'Optical disk memory and information processing apparatus'1995 5,371,730'Optical memory and information processing apparatus'1994 5,350,886'Mounting substrate'1994 5,317,556'Information processing apparatus and optical head incorporated therein'1994 5,316,617'Thin film magnetic head and method of manufacturing the same'1994 5,307,214'Magnetic recording apparatus'1994 5,296,979'Magnetic disc apparatus with thin film head suitable for high-density recording'1994 5,274,612'Information processor and disk memory used in the same'1993 5,245,493'Magnetic information storage apparatus including magnetic head and method for making magnetic head'1993 5,109,311'Magnetic disk device and method of recording/retrieving information'1992 5,051,856'Thin film magnetic head with mixed crystal structures'1991 4,923,765'Magneto-optical recording medium'1990 4,894,098'Process for preparing magnetic layer and magnetic head prepared using the same'1990 4,889,757'Optical recording disk'1989 4,880,694'Magneto-optical recording material'1989 4,838,962'Magneto-optical recording medium'1989 4,788,672'Method and apparatus for controlling renewal of data in optical disc memory'1988 4,772,976'Process for preparing magnetic layer and magnetic head prepared using the same'1988 4,707,755'Optical read-out magnetic head'1987 4,701,385'Ion-implanted magnetic bubble device and a method of manufacturing the same'1987 4,622,264'Garnet film for magnetic bubble memory element'1986 4,621,344'Magnetic bubble device'1986 4,607,349'Magnetic bubble memory device'1986 4,604,577'Temperature-compensated magnetic field measuring instrument'1986 4,601,013'Magnetic bubble memory device'1986 4,600,488'Control method of magnetic anisotropy and device utilizing the control method'1986 4,589,094'Magnetic bubble device'1986 4,589,095'Magnetic bubble stretcher'1986 4,584,668'Magnetic bubble memory device'1986 4,581,579'Optical magnetic-field measuring apparatus having improved temperature characteristics'1986 4,578,775'Magnetic bubble memory device'1986 4,559,617'Magnetic bubble memory device'1985 4,556,582'Method of fabricating magnetic bubble memory device'1985 4,556,583'Method of fabricating magnetic bubble memory device'1985 4,550,388'Method of controlling stop operation of rotating magnetic field for magnetic bubble memory device'1985 4,547,865'Magnetic bubble replicator'1985 4,546,452'Magnetic bubble device'1985 4,538,242'Signal processing circuit for magnetic bubble memory devices'1985 4,532,180'Garnet film for ion-implanted magnetic bubble device'1985 4,528,645'Magnetic bubble memory device'1985 4,525,808'Hybrid magnetic bubble memory device'1985 4,510,231'Method for manufacturing a magnetic bubble memory'1985 4,507,755'Magnetic bubble memory device'1985 4,503,517'Magnetic bubble memory device'1985 4,502,916'Process for forming fine patterns'1985 4,502,129'Magnetic bubble detector'1985 4,476,152'Method for production of magnetic bubble memory device'1984 4,460,412'Method of making magnetic bubble memory device by implanting hydrogen ions and annealing'1984 4,456,975'Magnetic bubble memory device with guardrail'1984 4,453,231'Magnetic bubble memory'1984 4,415,262'Photomask'1983 4,404,233'Ion implanting method'1983 4,397,912'Garnet film for magnetic bubble element'1983 4,344,153'Magnetic bubble memory device and method of fabricating the same'1982 4,338,372'Garnet film for magnetic bubble device'1982 4,267,230'Film for a magnetic bubble domain device'1981 4,262,054'Magnetic bubble memory device'1981 4,145,750'Field access magnetic bubble memory device'1979 3,932,688'Composite magnetic film'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1997Patents assigned to HITACHI LTD (62)· patent assignee history

1976–1997Based in Tokorozawa, JP· patent location history

1985Patents assigned to HIROKAZU AOKI (1)· patent assignee history

1985Based in Saitama-shi, JP· patent location history

1986Patents assigned to HITACHI CABLE (1)· patent assignee history

1986Based in Tokyo, JP· patent location history

1991Based in Hitachi, JP· patent location history

1997Patents assigned to HITACHI MAXELL (1)· patent assignee history

2017Patents assigned to CENTRAL GLASS CO LTD (1)· patent assignee history

2017Based in Saitama, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	62	1976–1997
CENTRAL GLASS CO LTD	1	2017
HIROKAZU AOKI	1	1985
HITACHI CABLE	1	1986
HITACHI MAXELL	1	1997

Locations

Location	Patents	Span
Tokorozawa, JP	59	1976–1997
Saitama, JP	1	2017
Hitachi, JP	1	1991
Tokyo, JP	1	1986
Saitama-shi, JP	1	1985