Inventor
Shigefumi Yamasaki
Inventor
Sakura, JP
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus58%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light17%
C03BManufacture, shaping, or supplementary processes8%
H04BTransmission8%
H04JMultiplex communication8%
PatentTitleYear
7,050,672'Polarization-maintaining optical fiber and polarization-maintaining optical fiber component'20066,463,195'Method of manufacturing polarization-maintaining optical fiber coupler'20026,459,829'Multiple wavelength excitation optical multiplexing device, multiple wavelength excitation light source incorporating aforementioned device, and optical amplifier'20026,442,313'Optical fiber grating and manufacturing method thereof'20026,298,183'Optical fiber grating and manufacturing method therefor'20015,848,208'Optical-fiber coupler and manufacturing process therefor'19985,689,578'Polarized wave holding optical fiber, production method therefor, connection method therefor, optical amplifier, laser oscillator and polarized wave holding optical fiber coupler'1997Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1997–2006Patents assigned to FUJIKURA LTD (6)· patent assignee history
1997–2006Based in Sakura, JP· patent location history
2002Based in Chiba, JP· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FUJIKURA LTD | 6 | 1997–2006 |
Locations
| Location | Patents | Span |
|---|---|---|
| Sakura, JP | 6 | 1997–2006 |
| Chiba, JP | 1 | 2002 |