Inventor
Yoshihiko Tsumekawa
Inventor
Saitama, JP
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Nprimary
H04NPictorial communication, e.g. television38%
G02BOptical elements, systems or apparatus25%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light13%
F21VFunctional features or details of lighting devices or systems thereof8%
G07DHandling of coins or valuable papers, e.g. testing, sorting by denominations, counting, dispensing, changing or depositing8%
G01NInvestigating or analysing materials by determining their chemical or physical properties4%
G03BApparatus or arrangements for taking photographs or for projecting or viewing them4%
PatentTitleYear
10,323,825Light guide, illumination device, sensor unit, reading apparatus, image forming apparatus, and paper sheet distinguishing apparatus201910,136,019Illumination apparatus, sensor unit, and reading apparatus201810,091,382Illumination apparatus and sensor unit20189,838,559Illumination apparatus, image sensor unit and image reading apparatus20179,638,855'Illumination apparatus and image sensor unit including diffusing patterns with differing intervals'20179,516,186'Image sensor unit, paper sheet distinguishing apparatus, image reading apparatus, and image forming apparatus'20169,478,090'Image sensor unit, image reading apparatus, and paper sheet distinguishing apparatus'20169,158,062'Illumination apparatus, image sensor unit, and image reading apparatus'20158,885,231'Illumination apparatus, image sensor unit, image reading apparatus, and image forming apparatus'20148,767,274'Image sensor unit, image reader, and image forming apparatus'2014Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2014–2019Patents assigned to CANON COMPONENTS KK (10)· patent assignee history
2014Patents assigned to NAGATA KENJI (1)· patent assignee history
2014Patents assigned to TSUMEKAWA YOSHIHIKO (1)· patent assignee history
2014–2019Based in Saitama, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| CANON COMPONENTS KK | 10 | 2014–2019 |
| NAGATA KENJI | 1 | 2014 |
| TSUMEKAWA YOSHIHIKOself | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Saitama, JP | 10 | 2014–2019 |