Inventor · disambiguated record
Hiroyuki Oyachi
Also filed as: OYACHI HIROYUKI
5 granted patents·1 pending application·18 citations·filing 2004–2018
74Inventor score
Top patents by PatentIndex Score
6 records- 0167US8083943B2Filtration deviceSUGIURA KIYOTAKA·Filed 2007·Granted Dec 27, 2011·6 cites·6 claims
- 0265US7922904B2Upward-flow manganese contact columnMETAWATER CO LTD·Filed 2007·Granted Apr 12, 2011·2 cites·8 claims
- 0351US7449110B2Filter and filter moduleNGK INSULATORS LTD·Filed 2004·Granted Nov 11, 2008·4 cites·12 claims
- 0451US6991737B2Filtering methodNGK INSULATORS LTD·Filed 2004·Granted Jan 31, 2006·6 cites·5 claims
- 0549US11459248B2Method of removing soluble manganeseMETAWATER CO LTD·Filed 2018·Granted Oct 4, 2022·0 cites·2 claims
- 0635US2019381478A1Activated carbon slurry supply methodMETAWATER CO LTD·Filed 2018·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Hiroyuki Oyachi 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 →