Inventor

Shoji Oka

Inventor

Gunma, JP

Overview

14→

Patents

1976–2021

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 14 as inventor

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

B62Dprimary

B62DMotor vehicles18%

C23CCoating metallic material12%

F16DCouplings for transmitting rotation12%

Y10TTechnical subjects covered by former us classification12%

F16FSprings9%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein6%

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

C25DProcesses for the electrolytic or electrophoretic production of coatings3%

F16CShafts3%

G03CPhotosensitive materials for photographic purposes3%

PatentTitleYear

10,901,272Liquid crystal display device2021 10,892,440Display device2021 8,531,850'Capacitor circuit and power conversion circuit including a resonant frequency adjustment element'2013 6,565,446'Elastic shaft joint'2003 6,530,599'Shock absorbing type steering shaft'2003 6,270,418'Elastic shaft joint'2001 6,151,982'Steering apparatus for a car'2000 6,123,481'Elastic shaft joint'2000 6,105,456'Steering intermediate shaft'2000 4,180,417'Phosphating of metallic substrate'1979 4,113,519'Phosphating of metallic substrate with electrolytic reduction of nitrate ions'1978 4,053,328'Zinc phosphate coating process'1977 3,996,072'Phosphate coating process and control of the phosphate coating solution'1976 3,930,869'Photographic silver halide photosensitive materials'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1979Patents assigned to NIPPON PAINT CO LTD (4)· patent assignee history

1976Patents assigned to MITSUBISHI PAPER MILLS LTD (1)· patent assignee history

1976–1978Based in Nara, JP· patent location history

1976–2013Based in Nagaokakyo, JP· patent location history

2000–2003Patents assigned to NSK LTD (6)· patent assignee history

2000–2003Based in Gunma, JP· patent location history

2013Patents assigned to KOBAYASHI SHINICHI (1)· patent assignee history

2021Patents assigned to JAPAN DISPLAY INC (2)· patent assignee history

2021Based in Minato-ku, JP· patent location history

2021Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NSK LTD	6	2000–2003
NIPPON PAINT CO LTD	4	1976–1979
JAPAN DISPLAY INC	2	2021
KOBAYASHI SHINICHI	1	2013
MITSUBISHI PAPER MILLS LTD	1	1976

Locations

Location	Patents	Span
Gunma, JP	6	2000–2003
Nara, JP	3	1976–1978
Nagaokakyo, JP	2	1976–2013
Minato-ku, JP	1	2021
Tokyo, JP	1	2021