Inventor

Masahiro Hayakawa

Inventor

Tokyo, JP

Overview

38→

Patents

1982–2016

Patent span

Physics

Primary field (CPC G)

Patents· 38 as inventor

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

G03Bprimary

G03BApparatus or arrangements for taking photographs or for projecting or viewing them29%

G03GElectrography12%

H04NPictorial communication, e.g. television12%

B29CShaping or joining of plastics8%

G02BOptical elements, systems or apparatus6%

G06FElectric digital data processing6%

B66BElevators4%

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

B41JTypewriters2%

F16DCouplings for transmitting rotation2%

PatentTitleYear

9,488,233'Control device for electromagnetic clutch'2016 9,227,352'Injection molding machine'2016 9,108,352'Injection molding machine'2015 9,108,401'Image recording apparatus with recording density and ejection timing correction'2015 9,090,016'Injection molding machine'2015 9,041,757'Image forming apparatus in which the light irradiated on a non-imaging portion is adjusted'2015 8,934,798'Image forming apparatus'2015 8,926,315'Injection molding machine'2015 8,635,474'Image forming apparatus'2014 8,332,398'Database system in which logical principles for a data retrieval process can evolve based upon learning'2012 7,817,948'Image forming apparatus and control method of image forming apparatus'2010 7,609,987'Image forming apparatus and control method of image forming apparatus'2009 7,597,001'Humidity measuring apparatus and image forming apparatus'2009 7,167,273'Image processing apparatus and method capable of eliminating image contour distortion'2007 7,127,102'Color matching method and device, color matching program, and computer readable record medium that stores color matching program allowing appropriate color matching at high speed'2006 7,077,240'Covers between an upper cage and a lower cage of a double deck elevator'2006 7,006,105'Color correction method and color correction program to obtain desired output image'2006 6,615,952'Double deck elevator'2003 6,603,495'Image forming apparatus having improved position aberration detection'2003 6,374,057'Data imprinting system for camera'2002 6,130,993'Camera having an image stabilizer'2000 5,946,501'Waterproof and/or water-resistant camera'1999 5,907,729'Camera having cover mechanism of film chamber'1999 5,822,631'Forced-driving apparatus for film rewinding motor of a camera'1998 5,713,048'Waterproof and/or water-resistant camera'1998 5,708,875'Camera having electronic flash equipment'1998 5,452,034'Regulated parallax compensation system for a camera finder'1995 5,406,346'Adaptor for film cartridge'1995 5,345,285'View finder and camera having same'1994 5,305,041'Remotely controllable camera system'1994 5,305,031'Sealed case'1994 5,153,622'Pressure alarm for water-sealed camera'1992 5,111,222'Pressure alarm in water-sealed camera'1992 5,070,348'Waterproof and/or water-resistant camera'1991 5,021,938'Transmission system with backup function'1991 4,963,913'Automatic focusing camera'1990 4,384,215'Capacitor element'1983 4,359,754'Semiconductor device'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–1991Patents assigned to FUJITSU LTD (3)· patent assignee history

1983–1999Based in Tokyo, JP· patent location history

1990–2002Patents assigned to ASAHI OPTICAL CO LTD (16)· patent assignee history

1999–2002Based in Kanagawa, JP· patent location history

2003–2015Patents assigned to CANON KK (7)· patent assignee history

2006–2012Patents assigned to MINOLTA CO LTD (4)· patent assignee history

2006–2012Based in Amagasaki, JP· patent location history

2009–2015Based in Odawara, JP· patent location history

2015–2016Patents assigned to SUMITOMO HEAVY INDUSTRIES (4)· patent assignee history

2015–2016Based in Chiba, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ASAHI OPTICAL CO LTD	16	1990–2002
CANON KK	7	2003–2015
MINOLTA CO LTD	4	2006–2012
SUMITOMO HEAVY INDUSTRIES	4	2015–2016
FUJITSU LTD	3	1982–1991

Locations

Location	Patents	Span
Tokyo, JP	11	1983–1999
Odawara, JP	6	2009–2015
Chiba, JP	4	2015–2016
Amagasaki, JP	4	2006–2012
Kanagawa, JP	3	1999–2002