Inventor · disambiguated record
Akinori Kumagai
Also filed as: KUMAGAI AKINORI
6 granted patents·4 pending applications·17 citations·filing 2011–2021
74Inventor score
Files withMITSUI MINING & SMELTING CO LTD4MITSUI MINING & SMELTING CO3ITOH JUN-ICHI1SASAKURA ASUKA1SHIMIZU HARUKA1
Top patents by PatentIndex Score
10 records- 0188US9312454B2Sulfur-containing phosphor coated with ZnO compoundITOH JUN-ICHI·Filed 2011·Granted Apr 12, 2016·13 cites·20 claims
- 0274US9394478B2Phosphor, LED light-emission element, and light source deviceMITSUI MINING & SMELTING CO·Filed 2013·Granted Jul 19, 2016·2 cites·14 claims
- 0372US9166119B2Light-emitting deviceSHIMIZU HARUKA·Filed 2012·Granted Oct 20, 2015·2 cites·30 claims
- 0461US12473207B2Tantalate dispersion and tantalate compoundMITSUI MINING & SMELTING CO LTD·Filed 2021·Granted Nov 18, 2025·0 cites·3 claims
- 0542US2023212025A1Niobate compound and niobium-containing slurryMITSUI MINING & SMELTING CO LTD·Filed 2021·Application pending·0 cites
- 0640US2023045212A1Niobic acid aqueous solutionMITSUI MINING & SMELTING CO LTD·Filed 2020·Application pending·0 cites
- 0737US2014196763A1Red Phosphor and Light-Emitting ElementSASAKURA ASUKA·Filed 2012·Application pending·0 cites
- 0833US11339309B2Polishing liquid and polishing methodMITSUI MINING & SMELTING CO LTD·Filed 2017·Granted May 24, 2022·0 cites·1 claims
- 0931US11015086B2Polishing slurry and polishing materialMITSUI MINING & SMELTING CO·Filed 2017·Granted May 25, 2021·0 cites·8 claims
- 1026US2020332163A1Polishing liquid and method for producing polished articleMITSUI MINING & SMELTING CO·Filed 2017·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Akinori Kumagai files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →