Inventor

Tetsuo Oka

Inventor

Obu, JP

Overview

27→

Patents

1987–2011

Patent span

Electricity

Primary field (CPC H)

Patents· 27 as inventor

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

Y10Sprimary

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

F25BRefrigeration machines, plants or systems7%

H01FMagnets7%

H10NElectric solid-state devices not otherwise provided for7%

Y10TTechnical subjects covered by former us classification6%

F25DRefrigerators4%

G01FMeasuring volume, volume flow, mass flow or liquid level4%

G01RMeasuring electric variables4%

B24BMachines, devices, or processes for grinding or polishing3%

G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure3%

PatentTitleYear

7,959,139'Noncontact rotating processor'2011 7,396,558'Integrated mask and method and apparatus for manufacturing organic EL device using the same'2008 7,026,901'Superconducting magnet apparatus and method for magnetizing superconductor'2006 6,847,278'Magnetic device'2005 6,705,934'Polishing pad'2004 6,696,112'Display device having a polyimide insulating layer'2004 6,545,474'Controlling method of superconductor magnetic field application apparatus, and nuclear magnetic resonance apparatus and superconducting magnet apparatus using the method'2003 6,489,769'Nuclear magnetic resonance apparatus'2002 6,441,710'Superconducting magnet apparatus and method for magnetizing superconductor'2002 6,362,107'Polishing pad and polishing device'2002 6,169,402'Nuclear magnetic resonance spectrometer'2001 6,111,490'Superconducting magnet apparatus and method for magnetizing superconductor'2000 5,981,442'Neodymium-barium-copper-oxide bulk superconductor and process for producing the same'1999 5,659,278'Superconducting magnet device, magnetizing device and method for superconductor'1997 5,581,135'Superconducting motor'1996 5,521,570'Superconductive magnetic levitation apparatus'1996 5,374,612'\"Oxide superconductor wire having sintered silver powder layers\"'1994 5,204,315'Superconductor wire and process for production thereof'1993 5,159,490'Mirror'1992 5,095,714'Surging prediction device for a centrifugal compressor'1992 4,970,487'Pressure sensor'1990 4,944,183'Level gauge for liquid helium'1990 4,888,211'Process for preparation of vertical magnetic recording medium'1989 4,876,893'Strain gauges for the pressure sensor'1989 4,745,806'Level gauge for liquid helium'1988 4,726,988'Vertical magnetic recording medium'1988 4,655,079'Level gauge for liquid helium'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–2006Patents assigned to AISIN SEIKI (16)· patent assignee history

1987–1990Based in Toyoake, JP· patent location history

1988–2008Patents assigned to TORAY INDUSTRIES (6)· patent assignee history

1988–1989Based in Otsu, JP· patent location history

1990–2006Based in Obu, JP· patent location history

1992Patents assigned to DAIKIN IND LTD (1)· patent assignee history

1996–1997Patents assigned to IMRA MATERIAL R & D CO LTD (3)· patent assignee history

1996Based in Kariya, JP· patent location history

2002–2003Patents assigned to RIKEN (2)· patent assignee history

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

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
AISIN SEIKI	16	1987–2006
TORAY INDUSTRIES	6	1988–2008
IMRA MATERIAL R & D CO LTD	3	1996–1997
RIKEN	2	2002–2003
DAIKIN IND LTD	1	1992

Locations

Location	Patents	Span
Obu, JP	11	1990–2006
Shiga, JP	4	2002–2008
Toyoake, JP	4	1987–1990
Kariya, JP	2	1996
Otsu, JP	2	1988–1989