Inventor

Osamu Kubo

Inventor

Yokohama, JP

Overview

1982–2008

Patent span

Physics

Primary field (CPC G)

Patents· 20 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 transducer21%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%

Y10TTechnical subjects covered by former us classification13%

C01GCompounds containing metals not covered by subclasses c01d or c01f8%

C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds8%

H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h107%

B82YSpecific uses or applications of nanostructures5%

G06FElectric digital data processing5%

H01FMagnets5%

C04BLime, magnesia3%

PatentTitleYear

7,371,687'Electronic circuit device'2008 7,323,771'Electronic circuit device'2008 7,091,598'Electronic circuit device'2006 6,989,600'Integrated circuit device having reduced substrate size and a method for manufacturing the same'2006 6,414,691'Method and apparatus for displaying graphs'2002 5,855,495'Exhaust gas cleaning device of outboard motor unit'1999 5,766,763'Hexagonal system ferrite powder for a high density magnetic recording medium'1998 5,686,137'Method of providing hexagonal ferrite magnetic powder with enhanced coercive force stability'1997 5,576,114'High density magnetic recording medium containing hexagonal system ferrite powder'1996 5,494,749'Magnetic powder for magnetic recording and magnetic recording medium containing the same'1996 5,378,547'Magnetic powder for magnetic recording and magnetic recording medium containing the same'1995 5,104,750'Magnetic recording medium'1992 5,077,146'Magnetic recording medium containing a substituted hexagonal ferrite magnetic powder which includes Zr or Hf and which has a temperature coefficient of coercivity not more than 3.5 oersteds/.degree.C.'1991 4,636,433'Magnetic powders for magnetic recording media and magnetic recording media employing said magnetic powder therein'1987 4,606,971'Magnetic recording medium'1986 4,582,623'Barium ferrite magnetic powder and recording medium employing the same'1986 4,569,775'Method for manufacturing a magnetic powder for high density magnetic recording'1986 4,493,874'Production of a magnetic powder having a high dispersibility'1985 4,407,721'Process for manufacturing powder for magnetic recording medium'1983 4,341,648'Method for manufacturing magnetic powder for high density magnetic recording'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–1986Patents assigned to TOKYO SHIBAURA ELECTRIC CO (4)· patent assignee history

1982–1998Based in Yokohama, JP· patent location history

1986–1998Patents assigned to TOSHIBA KK (10)· patent assignee history

1997Based in Kanagawa, JP· patent location history

1999Patents assigned to SUZUKI CO LTD (1)· patent assignee history

1999Based in Hamamatsu, JP· patent location history

2002Patents assigned to HITACHI LTD (1)· patent assignee history

2002–2008Based in Hitachi, JP· patent location history

2006–2008Patents assigned to RENESAS TECH CORP (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TOSHIBA KK	10	1986–1998
RENESAS TECH CORP	4	2006–2008
TOKYO SHIBAURA ELECTRIC CO	4	1982–1986
HITACHI LTD	1	2002
SUZUKI CO LTD	1	1999

Locations

Location	Patents	Span
Yokohama, JP	13	1982–1998
Hitachi, JP	5	2002–2008
Hamamatsu, JP	1	1999
Kanagawa, JP	1	1997