Inventor · disambiguated record
Kouju Sugiyama
Also filed as: SUGIYAMA KOUJU
5 granted patents·1 pending application·173 citations·filing 1993–2017
79Inventor score
Top patents by PatentIndex Score
6 records- 0186US5981052AInorganic porous crystals-hydrophilic macromolecule compositeRENGO CO LTD·Filed 1997·Granted Nov 9, 1999·75 cites·13 claims
- 0272US6372333B1Composition containing inorganic porous crystals-hydrophilic macromolecule composite and product made therefromRENGO CO LTD·Filed 1999·Granted Apr 16, 2002·95 cites·14 claims
- 0348US10619093B2Photoluminescent materialRENGO CO LTD·Filed 2016·Granted Apr 14, 2020·0 cites·23 claims
- 0438US8491141B2Photoluminescent material containing silver ionSUGIYAMA KOUJU·Filed 2011·Granted Jul 23, 2013·0 cites·9 claims
- 0534US2019153312A1Photo-luminescent materialRENGO CO LTD·Filed 2017·Application pending·0 cites
- 0629US5439866ASilver-containing tobermoriteRENGO CO LTD·Filed 1993·Granted Aug 8, 1995·3 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →