Inventor · disambiguated record
Hirotsugu Kumazawa
Also filed as: KUMAZAWA HIROTSUGU
3 granted patents·2 pending applications·198 citations·filing 1993–2023
73Inventor score
Files withTOKYO OHKA KOGYO CO LTD5
Top patents by PatentIndex Score
5 records- 0192US5349978ACleaning device for cleaning planar workpieceTOKYO OHKA KOGYO CO LTD·Filed 1993·Granted Sep 27, 1994·140 cites·19 claims
- 0274US5439519ASolution applying apparatusTOKYO OHKA KOGYO CO LTD·Filed 1994·Granted Aug 8, 1995·58 cites·23 claims
- 0352US2024124823A1Fluid circuit device and cell culture deviceTOKYO OHKA KOGYO CO LTD·Filed 2022·Application pending·0 cites
- 0449US11236297B2Method of producing cell culture chipTOKYO OHKA KOGYO CO LTD·Filed 2021·Granted Feb 1, 2022·0 cites·5 claims
- 0549US2025327569A1Chemical loop reaction systemTOKYO OHKA KOGYO CO LTD·Filed 2023·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Hirotsugu Kumazawa 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 →