Inventor

Yoshinori Miyamura

Inventor

Tokyo, JP

Overview

27→

Patents

1982–2007

Patent span

Physics

Primary field (CPC G)

Patents· 27 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 transducer25%

Y10TTechnical subjects covered by former us classification14%

B82YSpecific uses or applications of nanostructures9%

G01RMeasuring electric variables8%

H01FMagnets8%

H10NElectric solid-state devices not otherwise provided for8%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%

G02BOptical elements, systems or apparatus2%

G03CPhotosensitive materials for photographic purposes2%

H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation2%

PatentTitleYear

7,159,303'Method for manufacturing magnetic head device'2007 7,054,120'Magnetic apparatus with perpendicular recording medium and head having multilayered reproducing element using tunneling effect'2006 6,687,099'Magnetic head with conductors formed on endlayers of a multilayer film having magnetic layer coercive force difference'2004 6,483,677'Magnetic disk apparatus including magnetic head having multilayered reproducing element using tunneling effect'2002 6,323,415'Light concentrator photovoltaic module method of manufacturing same and light concentrator photovoltaic system'2001 6,294,723'Photovoltaic device, photovoltaic module and establishing method of photovoltaic system'2001 6,278,593'Magnetoresistance effect elements and magnetic heads using the tunneling magnetoresistive effect'2001 6,011,674'Magnetoresistance effect multilayer film with ferromagnetic film sublayers of different ferromagnetic material compositions'2000 5,814,400'Magneto-optical recording medium and method'1998 5,766,718'Longitudinal magnetic recording medium and apparatus'1998 5,736,235'Magnetic recording medium having at least two magnetic layers with easy axes oriented in the same direction'1998 5,726,837'Multilayer magnetoresistance effect-type magnetic head'1998 5,568,331'Method of head positioning and magnetic recording disk drive using the same'1996 5,411,430'Scanning optical device and method for making a hybrid scanning lens used therefor'1995 5,390,061'Multilayer magnetoresistance effect-type magnetic head'1995 5,372,843'Process for producing a magnetic recording medium using a patterned diffusion barrier'1994 5,330,880'Process for producing optical disks'1994 5,325,244'Magnetic recording data storage system'1994 5,270,987'Magneto-optical recording and reproducing method, magneto-optical memory apparatus and magneto-optical recording medium therefor'1993 5,235,591'Stack type optical disc apparatus, sealed and separate type optical head therefor and optical disc medium'1993 5,179,546'Magneto-optical disk and process for manufacturing the same'1993 5,093,822'High-density magnetic recording and optical reproducing apparatus'1992 5,020,041'Magneto-optical memory apparatus having a floating magnetic head'1991 4,889,757'Optical recording disk'1989 4,407,880'Substrate of member for recording information with light and method of manufacturing the same'1983 4,357,616'Recording medium'1982 4,348,461'Recording member'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–2004Patents assigned to HITACHI LTD (25)· patent assignee history

1982–2007Based in Tokyo, JP· patent location history

1982–1983Based in Hinode, JP· patent location history

1993–1998Patents assigned to HITACHI MAXELL (2)· patent assignee history

1993–2001Based in Nishitama-gun, JP· patent location history

1995Patents assigned to HITACHI KOKI KK (1)· patent assignee history

2006–2007Patents assigned to HITACHI GLOBAL STORAGE TECH (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HITACHI LTD	25	1982–2004
HITACHI GLOBAL STORAGE TECH	2	2006–2007
HITACHI MAXELL	2	1993–1998
HITACHI KOKI KK	1	1995

Locations

Location	Patents	Span
Tokyo, JP	18	1982–2007
Nishitama-gun, JP	7	1993–2001
Hinode, JP	2	1982–1983