Inventor · disambiguated record
Seiji Umezawa
Also filed as: UMEZAWA SEIJI
15 granted patents·2 pending applications·43 citations·filing 1981–2023
89Inventor score
Top patents by PatentIndex Score
17 records- 0194US11856365B2Transducer including coupler fitted in slits between beamsMURATA MANUFACTURING CO·Filed 2022·Granted Dec 26, 2023·4 cites·20 claims
- 0291US12275040B2Piezoelectric device and ultrasonic transducerMURATA MANUFACTURING CO·Filed 2021·Granted Apr 15, 2025·2 cites·19 claims
- 0391US12262176B2TransducerMURATA MANUFACTURING CO·Filed 2023·Granted Mar 25, 2025·2 cites·21 claims
- 0490US11979713B2Piezoelectric deviceMURATA MANUFACTURING CO·Filed 2022·Granted May 7, 2024·2 cites·20 claims
- 0576US11120741B2Display device and method for driving sameSHARP KK·Filed 2018·Granted Sep 14, 2021·2 cites·16 claims
- 0675US11176882B2Display device and method for driving sameSHARP KK·Filed 2018·Granted Nov 16, 2021·2 cites·16 claims
- 0760US4496248AStructure for a watch case made of cemented carbideCITIZEN WATCH CO LTD·Filed 1982·Granted Jan 29, 1985·15 cites·3 claims
- 0859US12507594B2Piezoelectric deviceMURATA MANUFACTURING CO·Filed 2022·Granted Dec 23, 2025·0 cites·20 claims
- 0955US12343760B2Piezoelectric deviceMURATA MANUFACTURING CO·Filed 2022·Granted Jul 1, 2025·0 cites·20 claims
- 1055US12138658B2Ultrasonic transducerMURATA MANUFACTURING CO·Filed 2022·Granted Nov 12, 2024·0 cites·19 claims
- 1151US12390834B2Piezoelectric device and acoustic transducerMURATA MANUFACTURING CO·Filed 2021·Granted Aug 19, 2025·0 cites·16 claims
- 1249US12389798B2Piezoelectric deviceMURATA MANUFACTURING CO·Filed 2022·Granted Aug 12, 2025·0 cites·15 claims
- 1346US11832522B2Piezoelectric transducerMURATA MANUFACTURING CO·Filed 2021·Granted Nov 28, 2023·0 cites·18 claims
- 1443US4408900AJoint structure of bezel and watch bodyCITIZEN WATCH CO LTD·Filed 1981·Granted Oct 11, 1983·7 cites·10 claims
- 1543US4382172AMethod for fabricating a watch caseCITIZEN WATCH CO LTD·Filed 1981·Granted May 3, 1983·7 cites·7 claims
- 1639US2021193901A1Piezoelectric transducerMURATA MANUFACTURING CO·Filed 2021·Application pending·0 cites
- 1739US2019295469A1Display deviceSHARP KK·Filed 2017·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →