Inventor
Ryuji Kawamoto
Inventor
Kyoto, JP
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus44%
A47KSanitary equipment11%
A47LDomestic washing or cleaning11%
G01SRadio direction-finding11%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein11%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices11%
PatentTitleYear
8,367,280'Color filter and photomask to be employed for the manufacture of color filter'20137,581,276'Cleaning pad, laminated body of a cleaning pad and cleaning tool'20097,289,696'Optical switch device'20077,194,153'Optical switch device'20077,095,919'Optical switch'20066,535,159'Immersion object detection system and method'2003Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2003–2007Patents assigned to OMRON TATEISI ELECTRONICS CO (4)· patent assignee history
2003–2007Based in Kyoto, JP· patent location history
2006Based in Kusatsu, JP· patent location history
2009Patents assigned to JOHNSON PROFESSIONAL CO LTD (1)· patent assignee history
2009Based in Odwara, JP· patent location history
2013Patents assigned to KAMADA ATSUKO (1)· patent assignee history
2013Patents assigned to KAWAMOTO RYUJI (1)· patent assignee history
2013Patents assigned to SHIRAISHI JUNICHI (1)· patent assignee history
2013Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| OMRON TATEISI ELECTRONICS CO | 4 | 2003–2007 |
| JOHNSON PROFESSIONAL CO LTD | 1 | 2009 |
| KAMADA ATSUKO | 1 | 2013 |
| KAWAMOTO RYUJIself | 1 | 2013 |
| SHIRAISHI JUNICHI | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kyoto, JP | 3 | 2003–2007 |
| Tokyo, JP | 1 | 2013 |
| Odwara, JP | 1 | 2009 |
| Kusatsu, JP | 1 | 2006 |