Inventor · disambiguated record
Hiroaki Takayama
Also filed as: TAKAYAMA HIROAKI
6 granted patents·9 pending applications·29 citations·filing 1980–2009
79Inventor score
Files withCHUGAI PHARMACEUTICAL CO LTD3HIROAKI TAKAYAMA2SUNTORY LTD1TAKAYAMA HIROAKI1TAKENOUCHI KAZUYA1
Top patents by PatentIndex Score
15 records- 0157US4517125ANovel vitamin D3 derivatives and process for producing the sameCHUGAI PHARMACEUTICAL CO LTD·Filed 1983·Granted May 14, 1985·6 cites·4 claims
- 0257US4284577ANovel vitamin D3 derivative and process for preparing the sameYAMADA SACHIKO·Filed 1980·Granted Aug 18, 1981·11 cites·2 claims
- 0349US2009124819A12-substituted vitamin d derivativesWISCONSIN ALUMNI RES FOUND·Filed 2009·Application pending·0 cites
- 0448US4344888A24,25-Dihydroxycholestans and process for preparing the sameCHUGAI PHARMACEUTICAL CO LTD·Filed 1981·Granted Aug 17, 1982·3 cites·8 claims
- 0542US6982257B1Vitamin D3 derivative and its production methodTEIJIN LTD·Filed 1998·Granted Jan 3, 2006·7 cites·2 claims
- 0641US2006074255A13-Methyl-20-epi-vitamin D derivativesTAKAYAMA HIROAKI·Filed 2005·Application pending·0 cites
- 0739US2005113349A12-Alpha vitamin D derivatives having substituentsHIROAKI TAKAYAMA·Filed 2004·Application pending·0 cites
- 0839US2005131242A12-substituted vitamin d derivativesCHUGAI PHARMACEUTICAL CO LTD·Filed 2002·Application pending·0 cites
- 0938US2005032754A15,6-Trans-2-alkylvitamin D derivativesHIROAKI TAKAYAMA·Filed 2004·Application pending·0 cites
- 1037US9073885B2Vitamin D3 lactone derivativesTAKENOUCHI KAZUYA·Filed 2004·Granted Jul 7, 2015·0 cites·9 claims
- 1135US2004030167A13-Methyl-20-epi-vitamin d derivativesFiled 2001·Application pending·0 cites
- 1234US6573243B1Pompilid wasp-derived neuropeptidesSUNTORY LTD·Filed 1998·Granted Jun 3, 2003·2 cites·6 claims
- 1332US2003092687A15,6-Trans-2-alkylvitamin d derivativesFiled 2001·Application pending·0 cites
- 1430US2005119240A11-methyl-20-epi-vitamin d derivativeFiled 2001·Application pending·0 cites
- 1525US2003022872A1Vitamin d derivatives having substituents at the 2 alpha-positionFiled 2001·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Hiroaki Takayama 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 →