Inventor

Seiichi Sakamoto

Inventor

Gunma, JP

Overview

15→

Patents

1983–2021

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 15 as inventor

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

F01Cprimary

F01CRotary-piston or oscillating-piston machines or engines34%

F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids19%

F16CShafts13%

G06FElectric digital data processing6%

F04BPositive-displacement machines for liquids3%

F05BIndexing scheme relating to wind, spring, weight, inertia or like motors, to machines or engines for liquids covered by subclasses f03b, f03d and f03g3%

G06KGraphical data reading3%

G06QInformation and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposes3%

G06TImage data processing or generation, in general3%

G06VImage or video recognition or understanding3%

PatentTitleYear

11,030,286Authentication apparatus, method, system and program, and server apparatus2021 11,030,290Biological data registration support device, biological data registration support system, biological data registration support method, biological data registration support program, recording medium for strong biological data registration support program2021 5,094,589'Slant plate type compressor with variable displacement mechanism'1992 4,824,346'Scroll type fluid displacement apparatus with balanced drive means'1989 4,645,436'Scroll type fluid displacement apparatus with improved anti-wear device'1987 4,589,828'Rotation preventing device for an orbiting member of a fluid displacement apparatus'1986 4,571,163'Axial clearance adjustment mechanism for scroll-type fluid displacement apparatus'1986 4,512,729'Drive bearing device for a fluid displacement apparatus'1985 4,492,543'Orbiting member fluid displacement apparatus with rotation preventing mechanism'1985 4,474,543'Rotation prevention device for an orbiting member of a fluid displacement apparatus'1984 4,468,181'Improved rotation preventing device for a scroll-type fluid displacement apparatus'1984 4,456,435'Scroll type fluid displacement apparatus'1984 4,435,136'Orbiting piston type fluid displacement apparatus with shaft bearing and seal mechanisms'1984 4,432,708'Scroll type fluid displacement apparatus with pressure communicating passage between pockets'1984 4,406,600'Scroll-type fluid displacement apparatus with rotation prevention/thrust bearing means for orbiting scroll member'1983

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1983–1992Patents assigned to SANDEN CORP (13)· patent assignee history

1983–1989Based in Gunma, JP· patent location history

1992Based in Guma, JP· patent location history

2021Patents assigned to NEC CORP (2)· patent assignee history

2021Patents assigned to UNIV TOKYO (1)· patent assignee history

2021Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SANDEN CORP	13	1983–1992
NEC CORP	2	2021
UNIV TOKYO	1	2021

Locations

Location	Patents	Span
Gunma, JP	12	1983–1989
Tokyo, JP	2	2021
Guma, JP	1	1992