Inventor · disambiguated record
Kazuhiko Yao
Also filed as: YAO KAZUHIKO
10 granted patents·38 citations·filing 1998–2004
85Inventor score
Files withHONSHU CHEMICAL IND10
Top patents by PatentIndex Score
10 records- 0175US6673975B1Method for producing 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexaneHONSHU CHEMICAL IND·Filed 2000·Granted Jan 6, 2004·9 cites·4 claims
- 0270US6720460B2Hydroxyphenyl adamantanes and process for the production of the sameHONSHU CHEMICAL IND·Filed 2003·Granted Apr 13, 2004·6 cites·5 claims
- 0364US6512149B2Method for removing butyl groups from butyl phenol compoundsHONSHU CHEMICAL IND·Filed 2001·Granted Jan 28, 2003·4 cites·15 claims
- 0462US6673974B1Process for production of 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexaneHONSHU CHEMICAL IND·Filed 2000·Granted Jan 6, 2004·3 cites·3 claims
- 0557US6673973B1Method of producing 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexaneHONSHU CHEMICAL IND·Filed 2000·Granted Jan 6, 2004·2 cites·1 claims
- 0650US6284931B1Process for producing 3, 3, 5-trimethylcyclohexylidenebisphenolHONSHU CHEMICAL IND·Filed 1999·Granted Sep 4, 2001·11 cites·8 claims
- 0744US6972344B2Method of producing pure 1,1-bis-(4-hydroxyphenyl)-3,3,5-trimethylcyclohexaneHONSHU CHEMICAL IND·Filed 2004·Granted Dec 6, 2005·0 cites·5 claims
- 0843US6118029AProcess for producing 3,3',5,5'-tetra-t butylbiphenolHONSHU CHEMICAL IND·Filed 1998·Granted Sep 12, 2000·3 cites·16 claims
- 0936US6992227B1Process for producing 1, 1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexaneHONSHU CHEMICAL IND·Filed 2000·Granted Jan 31, 2006·0 cites·6 claims
- 1034US6875896B2Method for producing high purity 1,1-bis(4-hydroxyphenyl)cyclohexanesHONSHU CHEMICAL IND·Filed 2004·Granted Apr 5, 2005·0 cites·8 claims
Join the waitlist — get patent alerts
Get an alert when Kazuhiko Yao 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 →