Inventor
SHOICHIRO KUWAHARA
Inventor
JP
Overview
Patents· 6 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 therein33%
H04BTransmission25%
G02BOptical elements, systems or apparatus17%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light8%
H03MCoding8%
H04LTransmission of digital information, e.g. telegraphic communication8%
PatentTitleYear
12,586,975Excitation device for optical amplifier202612,372,721Depolarizer and optical amplifier excitation apparatus202511,822,161Bias voltage adjustment apparatus and IQ optical modulation system202311,711,151Optical transmission system and compensation method202311,711,198Synchronous detection apparatus, synchronous detection method, and program202311,397,363Automatic bias control circuit2022Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2022–2025Patents assigned to NIPPON TELEGRAPH & TELEPHONE (5)· patent assignee history
2022–2026Based in JP· patent location history
2026Patents assigned to NTT INC (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| NIPPON TELEGRAPH & TELEPHONE | 5 | 2022–2025 |
| NTT INC | 1 | 2026 |
Locations
| Location | Patents | Span |
|---|---|---|
| JP | 6 | 2022–2026 |