Inventor
Makoto Hirakawa
Inventor
Kanagawa, JP
Overview
Patents· 38 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus35%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them14%
B41JTypewriters10%
H04NPictorial communication, e.g. television8%
G03GElectrography5%
H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy4%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution4%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry2%
C01BNon-metallic elements2%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices2%
PatentTitleYear
10,606,042Magnification optical system202010,451,961Focus adjustment system for an image display device201910,310,238Magnification optical system201910,073,333Light irradiation device, and image display equipped with the same, for emitting light of two or more components by laser light20189,962,622Evaporator and fuel cell system using the evaporator20189,894,333'Light source unit and image display apparatus'20189,841,584'Magnification optical system'20179,784,952'Magnification optical system'20179,738,519'Fuel reformer and fuel cell'20179,666,890'Fuel cell'20179,494,793'Light beam scanning device and image forming apparatus'20169,348,121'Magnification optical system'20169,252,161'Thin film transistor array substrate and manufacturing method thereof, and liquid crystal display device and manufacturing method thereof'20169,221,272'Optical scanning device and image forming apparatus'20159,195,062'Optical scanning device and image forming apparatus'20159,158,119'Enlargement optical system'20159,069,238'Image displaying apparatus'20159,046,674'Magnification optical system'20159,039,196'Image displaying apparatus having plane mirror at conjugate to image displaying element'20158,922,883'Magnification optical system'20148,624,951'Optical scanning device and image forming apparatus'20148,373,736'Optical scanning device and image forming apparatus'20138,233,209'Optical scanning device and image forming apparatus'20128,223,418'Optical scanning device and image forming apparatus'20128,223,417'Optical scanning device and image forming apparatus'20128,085,455'Optical scanning device, method of adjusting the same, and image forming apparatus'20117,903,135'Optical scanning device and image forming apparatus for optimizing arrangement intervals in a main-scanning direction and a sub-scanning direction'20117,777,967'Zoom lens, camera device and personal digital assistant'20107,738,007'Optical scanning device and method for adjusting errors'20107,671,939'Liquid crystal display element'20107,670,752'Photosensitive resin composition, composition for solder resist, and photosensitive dry film'20107,633,663'Optical scanning device and image forming apparatus'20097,623,280'Optical scanning device and image forming apparatus'20097,551,337'Optical scanning apparatus and image forming apparatus'20097,385,181'Optical scanning device and image forming device'20087,079,326'Zoom lens, camera, and portable information terminal apparatus'20066,829,102'Zoom lens, and camera and portable information terminal for utilizing zoom lens'20046,804,064'Zoom lens, camera, and portable information terminal apparatus'2004Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2004–2010Patents assigned to RICOH KK (9)· patent assignee history
2004Based in Tokyo, JP· patent location history
2008–2018Based in Kanagawa, JP· patent location history
2009–2020Based in Hiratsuka, JP· patent location history
2011–2020Patents assigned to RICOH CO LTD (22)· patent assignee history
2011–2019Patents assigned to HIRAKAWA MAKOTO (18)· patent assignee history
2014–2019Patents assigned to NISHINA KIICHIRO (7)· patent assignee history
2014–2019Patents assigned to OSAKA TAKANOBU (7)· patent assignee history
2017Based in Hyogo, JP· patent location history
2018Based in Amagasaki, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| RICOH CO LTD | 22 | 2011–2020 |
| HIRAKAWA MAKOTOself | 18 | 2011–2019 |
| RICOH KK | 9 | 2004–2010 |
| NISHINA KIICHIRO | 7 | 2014–2019 |
| OSAKA TAKANOBU | 7 | 2014–2019 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kanagawa, JP | 18 | 2008–2018 |
| Hiratsuka, JP | 11 | 2009–2020 |
| Hyogo, JP | 2 | 2017 |
| Tokyo, JP | 2 | 2004 |
| Amagasaki, JP | 1 | 2018 |