Inventor
Hiroaki Yanagita
Inventor
Tokyo, JP
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
C03Cprimary
C03CChemical composition of glasses, glazes or vitreous enamels26%
H10HInorganic light-emitting semiconductor devices having potential barriers15%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests15%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light11%
G02BOptical elements, systems or apparatus7%
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation7%
B82YSpecific uses or applications of nanostructures4%
C04BLime, magnesia4%
H10DInorganic electric semiconductor devices4%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution4%
PatentTitleYear
8,988,775'Polarizing element and process for producing polarizing element'20158,479,539'Optical glass, glass material for press molding, optical element, and method of manufacturing same'20137,897,976'Light-emitting device of field-effect transistor type'20117,880,377'Quantum dot-dispersed light emitting device, and manufacturing method thereof'20117,612,432'P-type ZnS based semiconductor material having a low resistance due to its high copper content'20097,355,213'Electrode material and semiconductor element'20087,015,164'Optical glass, glass material for press molding, optical element, and method of manufacturing same'20066,465,105'WDM optical filter and glass substrate for use in the WDM optical filter'20025,856,882'Optical fibers and optical fiber amplifiers'19995,764,661'Laser glasses and laser glass fibers'19985,246,892'Faraday rotation glass'19935,070,506'Halide laser glass and laser device utilizing the glass'1991Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1991–2015Patents assigned to HOYA CORP (12)· patent assignee history
1991–2013Based in Hino, JP· patent location history
1999–2015Based in Tokyo, JP· patent location history
2002Patents assigned to HOYA CORP U S A (1)· patent assignee history
2013–2015Patents assigned to YANAGITA HIROAKI (2)· patent assignee history
2013Patents assigned to KASUGA YOSHIKO (1)· patent assignee history
2013Patents assigned to TACHIWANA KAZUO (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| HOYA CORP | 12 | 1991–2015 |
| YANAGITA HIROAKIself | 2 | 2013–2015 |
| HOYA CORP U S A | 1 | 2002 |
| KASUGA YOSHIKO | 1 | 2013 |
| TACHIWANA KAZUO | 1 | 2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Tokyo, JP | 6 | 1999–2015 |
| Hino, JP | 6 | 1991–2013 |