Inventor
Hirotaka Sakuma
Inventor
JP
Overview
Patents· 15 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G02Bprimary
G02BOptical elements, systems or apparatus28%
C03BManufacture, shaping, or supplementary processes15%
C03CChemical composition of glasses, glazes or vitreous enamels10%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds5%
C09DCoating compositions, e.g. paints, varnishes or lacquers5%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein5%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light5%
H10KOrganic electric solid-state devices5%
Y02PClimate change mitigation technologies in the production or processing of goods5%
G09FDisplaying3%
PatentTitleYear
12,546,933Multicore optical fiber202612,466,757Production method for optical fiber base material, and optical fiber base material202512,449,589Multicore optical fiber202512,398,062Method for producing optical fiber base material, and optical fiber base material202512,216,309Optical fiber202512,202,934Charge-transport polymer and organic electronic element202512,030,804Optical fiber202411,971,571Optical fiber202411,740,404Optical fiber202311,714,226Optical fiber202311,476,421Organic electronics material and organic electronics element202211,322,904Optical amplifier and multi-core optical fiber202211,316,316Optical amplifier and multi-core optical fiber202211,280,958Optical fiber, colored optical fiber, and optical transmission system202211,181,684Optical fiber2021Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2021–2026Patents assigned to SUMITOMO ELECTRIC INDUSTRIES (13)· patent assignee history
2021–2026Based in JP· patent location history
2022–2025Patents assigned to HITACHI CHEMICAL CO LTD (2)· patent assignee history
2022Patents assigned to SHOWA DENKO MATERIALS CO LTD (1)· patent assignee history
2025Patents assigned to RESONAC CORP (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SUMITOMO ELECTRIC INDUSTRIES | 13 | 2021–2026 |
| HITACHI CHEMICAL CO LTD | 2 | 2022–2025 |
| RESONAC CORP | 1 | 2025 |
| SHOWA DENKO MATERIALS CO LTD | 1 | 2022 |
Locations
| Location | Patents | Span |
|---|---|---|
| JP | 15 | 2021–2026 |