Inventor · disambiguated record
Taketo Hayashi
Also filed as: HAYASHI TAKETO
13 granted patents·1 pending application·36 citations·filing 1992–2004
88Inventor score
Top patents by PatentIndex Score
14 records- 0170US6455696B2Process for preparing 2,6-dichloropurineSUMIKA FINE CHEMICALS CO LTD·Filed 2001·Granted Sep 24, 2002·5 cites·16 claims
- 0266US6342603B1Purine derivatives having cyclopropane ringSUMIKA FINE CHEMICALS CO LTD·Filed 2000·Granted Jan 29, 2002·4 cites·1 claims
- 0365US6936713B2Process for producing 2,6-dihalogenopurineSUMITOMO CHEMICAL CO·Filed 2002·Granted Aug 30, 2005·7 cites·16 claims
- 0464US5389637A2-formylamino-6-halogenopurineSUMIKA FINE CHEMICALS CO LTD·Filed 1993·Granted Feb 14, 1995·6 cites·1 claims
- 0560US5902899AProcess for preparing 1, 3-disubstituted ureaSUMIKA FINE CHEMICALS CO LTD·Filed 1997·Granted May 11, 1999·8 cites·3 claims
- 0655US7307167B2Production method of 2,6-dihalopurineSUMITOMO CHEMICAL CO·Filed 2003·Granted Dec 11, 2007·1 cites·6 claims
- 0752US5508446AMethod for producing alkyl 3-phthalidylideneacetateSUMIKA FINE CHEMICALS CO LTD·Filed 1994·Granted Apr 16, 1996·4 cites·10 claims
- 0851US7321035B2Process for producing 2,6-dihalogenopurineSUMITOMO CHEMICAL CO·Filed 2004·Granted Jan 22, 2008·0 cites·16 claims
- 0944US7345170B2Crystal and solvate of 2-amino-6-benzyloxypurine and production methods thereofSUMITOMO CHEMICAL CO·Filed 2003·Granted Mar 18, 2008·0 cites·3 claims
- 1037US2006100429A1Alkynylpurine compounds and production methods thereofHAYASHI TAKETO·Filed 2003·Application pending·0 cites
- 1135US6156892APurine derivatives having cyclopropane ringSUMIKA FINE CHEMICALS CO LTD·Filed 1998·Granted Dec 5, 2000·1 cites·10 claims
- 1235US5440037AMethod for production of 2-amino-6-halogenopurine derivativesSUMIKA FINE CHEMICALS CO LTD·Filed 1994·Granted Aug 8, 1995·0 cites·5 claims
- 1334US5391733ASynthesis intermediates for 2-amino-6-halogenopurinesSUMIKA FINE CHEMICALS CO LTD·Filed 1992·Granted Feb 21, 1995·0 cites·2 claims
- 1429US5994541AProcess for producing 2-amino-6-iodopurineSUMIKA FINE CHEMICALS CO LTD·Filed 1997·Granted Nov 30, 1999·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →