Inventor
Tetsuo Ishizaka
Inventor
Kawasaki, JP
Overview
Patents· 23 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Fprimary
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein28%
G02BOptical elements, systems or apparatus26%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light16%
H04BTransmission9%
F25BRefrigeration machines, plants or systems5%
G05DSystems for controlling or regulating non-electric variables5%
H10NElectric solid-state devices not otherwise provided for5%
H05BElectric heating2%
H10WGeneric packages, interconnections, connectors or other constructional details of devices covered by class h102%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%
PatentTitleYear
10,536,217Optical transmission module and control method of optical transmission module20209,515,728'Light source module and optical transceiver'20168,520,710'Optical transmission module and controlling method for optical transmission module'20137,787,717'Optical waveguide device'20107,386,198'Optical waveguide device'20087,315,676'Optical modulator, optical waveguide device and acousto-optic tunable filter apparatus'20087,289,703'Optical modulator, optical waveguide device and acousto-optic tunable filter apparatus'20077,280,713'Optical modulator, optical waveguide device and acousto-optic tunable filter apparatus'20077,113,677'Optical modulator, optical waveguide device and acousto-optic tunable filter apparatus'20067,006,715'Optical modulator of clock modulation type'20066,999,223'Optical modulator'20066,741,379'Optical module having element for optical phase shift using electro-optic effect'20046,678,428'Optical modulator'20046,594,407'Optical modulator of clock modulation type'20036,490,303'Laser diode module'20025,966,938'Peltier control circuit and a peltier device structure'19995,760,946'Optical isolator, faraday rotator suitable for use in the same, and laser diode module incorporating the same'19985,751,877'Semiconductor laser module'19985,703,893'Laser diode module'19975,515,682'Peltier control circuit and a peltier device structure'19965,214,660'Laser diode module and method for fabricating the same'19935,212,699'Temperature-controlling laser diode assembly'19935,150,230'Rod lens fixing method and fiber collimator manufactured thereby'1992Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–2010Patents assigned to FUJITSU LTD (20)· patent assignee history
1992–2013Based in Kawasaki, JP· patent location history
1993Based in Narashino, JP· patent location history
1998Based in Sapporo, JP· patent location history
2013–2020Patents assigned to FUJITSU OPTICAL COMPONENTS LTD (3)· patent assignee history
2013Patents assigned to ISHIZAKA TETSUO (1)· patent assignee history
2016–2020Based in Inagi, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FUJITSU LTD | 20 | 1992–2010 |
| FUJITSU OPTICAL COMPONENTS LTD | 3 | 2013–2020 |
| ISHIZAKA TETSUOself | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kawasaki, JP | 19 | 1992–2013 |
| Inagi, JP | 2 | 2016–2020 |
| Sapporo, JP | 1 | 1998 |
| Narashino, JP | 1 | 1993 |