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Inventor

Keisuke Hirai

Inventor
Kyoto, JP

Overview

32→
Patents
1988–2020
Patent span
Physics
Primary field (CPC G)

Patents· 32 as inventor

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

G02Bprimary
G02BOptical elements, systems or apparatus12%
H04NPictorial communication, e.g. television12%
C07DHeterocyclic compounds6%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them6%
A61KPreparations for medical, dental or toiletry purposes4%
B41CProcesses for the manufacture or reproduction of printing surfaces4%
B41JTypewriters4%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables4%
E04DRoof coverings4%
F24SSolar heat collectors4%
PatentTitleYear
10,759,768Prophylactic or therapeutic agent for autism spectrum disorder20209,529,245'Image pickup apparatus including focus operating apparatus and focus control method'20168,861,948'Image pickup apparatus'20148,785,491'Pharmaceutical compositions and methods for treating age-related macular degeneration with melatonin analogues'20148,677,519'Drainage connector'20148,579,286'Image recording device'20138,436,933'Image pickup system and lens apparatus'20138,289,442'Television camera system and television lens apparatus'20128,070,286'Image recording apparatus'20118,054,366'Auto-focusing optical apparatus with focus detection area setting capability and focus detection area changing capability'20118,035,724'Method and apparatus for controlling lens position'20117,938,400'Transport device for image recording apparatus and method of correcting transport speed in transport device for image recording apparatus'20117,808,547'Lens apparatus and image-taking apparatus including drive range limiting function having valid and invalid states'20107,417,683'Auto-focusing optical apparatus with focus detection area setting capability'20087,341,564'Biopsy forceps device with transparent outer sheath'20087,265,914'Lens device and photographing apparatus including the same'20077,262,803'Camera with adjustable auto-focus detection area'20077,218,849'Lens device having a controller for controlling optical elements and photographing apparatus including the lens device'20076,988,724'Sheet-fed printing apparatus'20066,837,490'Paper feeding apparatus'20056,318,256'Printing apparatus'20016,271,266'Use of idebenone and analogues against .beta. amyloid induced cytotoxicity'20016,233,501'System for engraving a plurality of gravure rolls'20016,009,807'Printing apparatus'20005,822,078'System for engraving a plurality of gravure rolls'19985,810,526'Lubricant application apparatus in a gravure engraving machine'19985,706,617'Roof system utilizing a solar cell'19985,686,466'Tricyclic condensed heterocyclic compounds their production and use'19975,527,800'Tricyclic condensed heterocyclic compounds, their production and use'19965,497,587'Roof system utilizing a solar cell'19965,367,843'Roof apparatus'19944,737,431'Negative-electrification finely-divided toner in use for electrophotography'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–2014Based in Tokyo, JP· patent location history
1994–1998Patents assigned to HIRAI ENG CORP (3)· patent assignee history
1996–2001Patents assigned to TAKEDA CHEMICAL INDUSTRIES LTD (3)· patent assignee history
1998–2013Patents assigned to DAINIPPON SCREEN MFG (10)· patent assignee history
1998–2013Based in Kyoto, JP· patent location history
2001–2014Based in Osaka, JP· patent location history
2007–2016Patents assigned to CANON KK (11)· patent assignee history
2007–2016Based in Utsunomiya, JP· patent location history
2008–2011Based in Tochigi, JP· patent location history
2011–2016Patents assigned to HIRAI KEISUKE (7)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CANON KK112007–2016
DAINIPPON SCREEN MFG101998–2013
HIRAI KEISUKEself72011–2016
HIRAI ENG CORP31994–1998
TAKEDA CHEMICAL INDUSTRIES LTD31996–2001
Locations
LocationPatentsSpan
Kyoto, JP101998–2013
Tokyo, JP81988–2014
Utsunomiya, JP62007–2016
Tochigi, JP32008–2011
Osaka, JP22001–2014