Inventor

Tohru Kawai

Inventor

Kawasaki, JP

Overview

40→

Patents

1982–2019

Patent span

Electricity

Primary field (CPC H)

Patents· 40 as inventor

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

G02Bprimary

G02BOptical elements, systems or apparatus26%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them13%

H01LSemiconductor devices12%

H10DInorganic electric semiconductor devices12%

H04NPictorial communication, e.g. television9%

H02NElectric machines not otherwise provided for7%

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

G11CStatic stores3%

H10BElectronic memory devices3%

C21DModifying the physical structure of ferrous metals1%

PatentTitleYear

10,475,918Semiconductor device and method of manufacturing the same2019 10,416,481Semiconductor device2019 10,236,371Semiconductor device and method of manufacturing the same2019 10,056,298Manufacturing method of semiconductor device2018 9,941,284Semiconductor device2018 9,933,568Semiconductor device and manufacturing method thereof2018 9,748,247'Semiconductor device'2017 9,564,426'Semiconductor device and method of manufacturing the same'2017 8,963,207'Semiconductor device'2015 7,688,353'Image-taking apparatus and image-taking method'2010 7,675,567'Camera, camera system, and lens apparatus'2010 7,515,199'Detachable lens apparatus, camera system and camera for accurate automatic focusing using two driving mechanisms'2009 7,385,632'Lens, camera body and camera system'2008 6,559,900'Lens system for a projection display apparatus in which lenses are uniform in one direction and nonuniform in another'2003 6,154,613'Diaphragm device having full-open aperture diameter electrically varied according to zooming'2000 6,008,958'Driving device for optical member and optical apparatus'1999 5,335,115'Lens barrel'1994 5,099,166'Vibration wave driven motor'1992 4,963,000'Lens barrel'1990 4,774,538'Focus control method and camera'1988 4,771,203'Vibration wave motor'1988 4,747,775'Skid beam for heating furnaces of walking beam type'1988 4,743,791'Vibration wave motor'1988 4,720,169'Lens for macro-photography'1988 4,697,891'Focal length variable lens apparatus'1987 4,609,260'Automatic focusing apparatus for zoom lens'1986 4,596,454'Photographic lens barrel assembly'1986 4,589,753'Lens mounting having a reversible motor for controlling focusing and aperture setting of a camera'1986 4,537,536'Process and apparatus of constructing a water tight underground pile wall'1985 4,536,057'Filter mounting mechanism for an optical assembly'1985 4,514,039'Lens mounting'1985 4,484,099'Piezoelectric vibration wave motor with multiple traveling wave generating members'1984 4,478,491'Focus presetting mechanism for a camera lens assembly'1984 4,460,253'Electromagnetically driven diaphragm device'1984 4,459,001'Automatic focusing system with interrupt function'1984 4,458,990'Adjusting mechanism for lens mounting assembly'1984 4,422,740'Lens assembly provided with an automatic focusing device'1983 4,384,767'Clamping device for camera accessory or hood'1983 4,367,931'Electromagnetically driven diaphragm device'1983 4,320,951'Extension tube for camera'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–2010Patents assigned to CANON KK (28)· patent assignee history

1982–2015Based in Kawasaki, JP· patent location history

1984–2009Based in Kanagawa, JP· patent location history

1985Patents assigned to SHIMIZU CONSTRUCTION CO LTD (1)· patent assignee history

1988Patents assigned to KAWASAKI STEEL CO (1)· patent assignee history

1988Patents assigned to KUBOTA LTD (1)· patent assignee history

1988Based in Toyonaka, JP· patent location history

2015–2019Patents assigned to RENESAS ELECTRONICS CORP (9)· patent assignee history

2017–2019Based in Ibaraki, JP· patent location history

2018Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANON KK	28	1982–2010
RENESAS ELECTRONICS CORP	9	2015–2019
KAWASAKI STEEL CO	1	1988
KUBOTA LTD	1	1988
SHIMIZU CONSTRUCTION CO LTD	1	1985

Locations

Location	Patents	Span
Kawasaki, JP	16	1982–2015
Kanagawa, JP	14	1984–2009
Ibaraki, JP	7	2017–2019
Tokyo, JP	1	2018
Toyonaka, JP	1	1988