Inventor
Kazumi Kawamoto
Inventor
Yokohama, JP
Overview
Patents· 30 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus36%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light20%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein14%
G11BInformation storage based on relative movement between record carrier and transducer9%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h109%
H01PWaveguides5%
G01MTesting static or dynamic balance of machines or structures2%
G01NInvestigating or analysing materials by determining their chemical or physical properties2%
H05KPrinted circuits2%
PatentTitleYear
7,412,120'Optical module and optical transmission apparatus'20087,215,886'Optical communication module'20077,177,549'High-frequency transmission line and an optical module incorporating the same line'20077,044,652'Optical transmission module'20067,037,000'Optical transmission module'20067,027,674'Optical module and optical transmission apparatus'20066,985,659'Optical transmission module'20066,983,000'Laser diode module'20066,937,406'Optical module and method for manufacturing optical module'20056,937,799'Optical transmission module and optical communication system using the same'20056,912,363'Optical module which permits stable laser output'20056,864,511'Optical transmission module and the production method of the same'20056,856,442'Transmission line, optical module using the same and manufacturing method of optical module'20056,822,271'Semiconductor photodetector and optical transmitting device'20046,813,102'Optical module with a monitor photo diode'20046,813,419'Optical transmission module and optical communication system using the same'20046,805,496'Optical communication module, manufacturing method thereof and wavelength selective filter'20046,661,503'Method for manufacturing optic transmission modules and system for inspecting bit error rate characters'20036,635,971'Electronic device and optical transmission module'20036,597,712'Laser diode module'20036,501,891'Optical wave-guide, light-beam spot converter and optical transmission module'20026,289,157'Optical wave-guide, light-beam spot converter and optical transmission module'20015,854,870'Short-wavelength laser light source'19985,274,727'Second harmonic generator and method of fabrication thereof'19935,195,070'Optical information processing apparatus and optical pickup therefor'19935,191,624'Optical information storing apparatus and method for production of optical deflector'19935,187,756'Surface acoustic waveguide device and manufacturing method'19935,125,740'Method and apparatus for measuring optical constants of a thin film as well as method and apparatus for fabricating a thin film utilizing same'19925,070,488'Optical integrated circuit and optical apparatus'19914,906,063'Wave guide type optical device and method of fabricating the same'1990Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1990–2007Patents assigned to HITACHI LTD (17)· patent assignee history
1990–2008Based in Yokohama, JP· patent location history
1991Patents assigned to ARIMOTO AKIRA (1)· patent assignee history
1991Patents assigned to FUKUSHIMA ATSUKO (1)· patent assignee history
1991Patents assigned to HIRA YASUO (1)· patent assignee history
1991Based in Totsuka-ku, JP· patent location history
1998Based in Kokubunji, JP· patent location history
2004–2008Patents assigned to OPNEXT JAPAN INC (12)· patent assignee history
2005Based in Tokyo, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HITACHI LTD | 17 | 1990–2007 |
| OPNEXT JAPAN INC | 12 | 2004–2008 |
| ARIMOTO AKIRA | 1 | 1991 |
| FUKUSHIMA ATSUKO | 1 | 1991 |
| HIRA YASUO | 1 | 1991 |
Locations
| Location | Patents | Span |
|---|---|---|
| Yokohama, JP | 27 | 1990–2008 |
| Tokyo, JP | 1 | 2005 |
| Kokubunji, JP | 1 | 1998 |
| Totsuka-ku, JP | 1 | 1991 |