Inventor
RYOICHI KASAHARA
Inventor
JP
Overview
Patents· 27 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 therein42%
G02BOptical elements, systems or apparatus30%
H04BTransmission7%
A61BDiagnosis5%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients2%
C08LCompositions of macromolecular compounds2%
C30BSingle-crystal growth2%
G16HHealthcare informatics, i.e. information and communication technology [ict] specially adapted for the handling or processing of medical or healthcare data2%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light2%
H04JMultiplex communication2%
PatentTitleYear
12,546,944Optical module202612,346,000Planar optical waveguide device for measuring amplitude phase of squeezed light202512,339,564Wavelength conversion apparatus202512,085,836Optical amplifier202412,044,883Optical waveguide and manufacturing method thereof202412,032,269Wavelength conversion apparatus202412,007,666Wavelength conversion element and method for producing same202411,988,873End structure of a waveguide202411,971,644Wavelength conversion device202411,960,152Method for adjusting transmitted wavelength of signal light transmitted through optical waveguide device202411,892,745Wavelength conversion element and method for manufacturing same202411,888,528Optical communication system202411,852,953Optical element and manufacturing method thereof202311,835,768Filling resin and optical waveguide circuit filled with filling resin202311,815,785Wavelength conversion optical element202311,768,421Wavelength conversion device202311,740,537Optical signal processing circuit202311,733,469Planar lightwave circuit and optical device202311,733,584Wavelength conversion apparatus202311,644,735Wavelength conversion element202311,635,641Planar-lightwave-type optical device202311,442,225Wavelength conversion element and method for manufacturing wavelength conversion element202211,387,909Optical signal transmitter202211,385,521Wavelength conversion apparatus202211,324,435Heartbeat detection method and heartbeat detection device202211,269,139Waveguide type optical interferometer circuit202211,234,613Respiration estimation method and apparatus2022Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2022–2025Patents assigned to NIPPON TELEGRAPH & TELEPHONE (26)· 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 | 26 | 2022–2025 |
| NTT INC | 1 | 2026 |
Locations
| Location | Patents | Span |
|---|---|---|
| JP | 27 | 2022–2026 |