Inventor

Rikuro Obara

Inventor

Nagano, JP

Overview

1996–2010

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 82 as inventor

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

F16Cprimary

F16CShafts36%

G11BInformation storage based on relative movement between record carrier and transducer16%

H02KDynamo-electric machines14%

Y10TTechnical subjects covered by former us classification12%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%

C04BLime, magnesia2%

F04DNon-positive-displacement pumps2%

Y02PClimate change mitigation technologies in the production or processing of goods2%

Y02WClimate change mitigation technologies related to wastewater treatment or waste management2%

B21CManufacture of metal sheets, wire, rods, tubes, profiles or like semi-manufactured products otherwise than by rolling1%

PatentTitleYear

7,764,463'Fluid dynamic pressure bearing for spindle motors and storage disk drive devices and having ridge portions between grooves in the fluid dynamic pressure bearing'2010 7,661,882'Fluid dynamic pressure bearing device, spindle motor provided with the fluid dynamic pressure bearing device, and recording disk drive device'2010 7,654,744'Fluid dynamic bearing mechanism for a motor'2010 7,648,281'Fluid dynamic bearing, motor and storage disk device'2010 7,510,330'Fluid dynamic bearing and a storage disk drive with a spindle motor having the fluid dynamic bearing'2009 7,306,374'Special type bearing device'2007 7,246,440'Spindle motor and method of manufacturing the same'2007 7,176,594'Motor'2007 7,168,857'Special type bearing device'2007 7,144,932'Low-friction, high-dispersion synthetic resin composition containing fine particles of RB ceramic or CRB ceramic and a method for its preparation'2006 7,000,320'Process for manufacturing miniature ball bearings'2006 6,990,738'Process for manufacturing miniature ball bearings'2006 6,965,493'Hydrodynamic pressure bearing system and spindle motor using the same'2005 6,916,160'Axial electric fan blower with electric components housing sealed from moisture, dirt and dust or other harmful gas'2005 6,855,279'Weather-resistant exterior building material'2005 6,855,214'Anti-friction bearing'2005 6,799,893'Special type bearing device'2004 6,794,774'Spindle motor'2004 6,787,075'Method of making synthetic resin composition with lubricative underwater properties containing RBC or CRBC fine powder'2004 6,777,360'Ceramic material, method of producing same, and formed product thereof'2004 6,734,590'Motor'2004 6,734,591'Spindle motor'2004 6,712,517'Sleeve bearing arrangement'2004 6,683,264'Low profile key switch structure'2004 6,655,847'Pivot bearing assembly'2003 6,657,340'Motor and method of manufacturing the same'2003 6,639,336'Spindle motor and manufacturing method thereof'2003 6,599,021'Compound bearing apparatus'2003 6,599,020'Double seal bearing'2003 6,599,022'Bearing apparatus'2003 6,582,129'Compound bearing apparatus, and spindle motor and swing arm for hard disk drive means including such bearing apparatus'2003 6,573,215'Material for bearing rolling element'2003 6,563,243'Spindle motor'2003 6,556,375'Hard disk drive device'2003 6,538,354'Spindle motor with toroidal sealing plates'2003 6,527,447'Sliding of polycrystallized glass'2003 6,512,316'Spindle motor'2003 6,511,303'Fan blower with durable bearing structure'2003 6,464,400'Polycrystalline glass bearing'2002 6,420,809'Bearing structure for flat motor'2002 6,402,387'Double seal bearing'2002 6,395,677'Material for bearing retainer'2002 6,379,129'Blower'2002 6,345,915'Bearing and method for manufacturing the same'2002 6,345,443'Compound bearing assembly and method of manufacturing the same'2002 6,308,772'Heat sink'2001 6,273,615'Retainer for a bearing and a ball bearing'2001 6,246,137'Spindle motor'2001 6,229,237'Spindle motor'2001 6,227,714'Compound bearing assembly for swing arm of hard disc drive'2001 6,181,513'Spindle motor and a hard disk drive apparatus including such a motor'2001 6,178,061'Hard disk drive unit and method of manufacturing the same'2001 6,176,620'Composite bearing structure'2001 6,144,558'Parts installation structure having electronic part connected to flexible sheet with conductive and non-conductive adhesives'2000 6,129,454'Compound bearing assembly and method and manufacturing the same'2000 6,102,575'Compound bearing apparatus'2000 6,078,466'Magnetic disk unit'2000 6,050,729'Compound ball bearing'2000 6,050,728'Compound ball bearing type pulley'2000 6,033,120'Compound bearing assembly for swing arm of hand disc drive'2000 6,012,226'Compound bearing assembly and method of manufacturing the same'2000 5,969,449'Rotary machine of inner rotor type'1999 5,967,671'Bearing structure for motor and motor with the bearing structure'1999 5,952,753'Motor'1999 5,933,292'Bearing structure for a hard disk drive device'1999 5,924,800'Ball bearing for small size fan'1999 5,843,369'Stainless steel for anti-friction bearing and method of making'1998 5,841,210'Electric drive motor with a compound bearing assembly'1998 5,826,989'Compound ball bearing'1998 5,828,150'Hard disc drive with a compound bearing assembly'1998 5,820,273'Hard disc drive with a compound bearing assembly'1998 5,808,388'Electric drive motor with a compound bearing assembly'1998 5,806,989'Compound ball bearing for swing arm unit and swing arm unit for hard disc drive device'1998 5,803,618'Compound ball bearing'1998 5,800,069'Compound bearing assembly'1998 5,765,275'Method of manufacturing hard disk drive unit'1998 5,723,926'Stepping motor'1998 5,698,919'Integral bearing type electric motor'1997 5,655,846'Bearing assembly and method of manufacturing the same'1997 5,649,442'Method of manufacturing casing base for hard disc drive device'1997 5,560,717'Compound ball bearing'1996 5,556,209'Double-row ball bearing'1996

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1996–2005Patents assigned to MINEBEA KK (39)· patent assignee history

1996–2010Based in Nagano, JP· patent location history

1998–2010Patents assigned to MINEBEA CO LTD (41)· patent assignee history

1998–2010Based in Kitasaku-gun, JP· patent location history

1999–2007Based in Miyota-machi, JP· patent location history

2000Based in c/o Minebae Kabushiki-Kaisha, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MINEBEA CO LTD	41	1998–2010
MINEBEA KK	39	1996–2005

Locations

Location	Patents	Span
Nagano, JP	45	1996–2010
Miyota-machi, JP	27	1999–2007
Kitasaku-gun, JP	9	1998–2010
c/o Minebae Kabushiki-Kaisha, JP	1	2000