Inventor · disambiguated record
Takenori Ishizawa
Also filed as: ISHIZAWA TAKENORI
11 granted patents·2 pending applications·99 citations·filing 1994–2025
89Inventor score
Top patents by PatentIndex Score
13 records- 0186US5977167ABenzopyran and benzoxazine derivativesCHUGAI PHARMACEUTICAL CO LTD·Filed 1998·Granted Nov 2, 1999·29 cites·2 claims
- 0282US5874446ABenzopyran derivativesCHUGAI PHARMACEUTICAL CO LTD·Filed 1996·Granted Feb 23, 1999·23 cites·6 claims
- 0382US5614633ABenzopyran derivativesCHUGAI PHARMACEUTICAL CO LTD·Filed 1995·Granted Mar 25, 1997·23 cites·3 claims
- 0478US8088916B2Hyaluronic acid-methotrexate conjugateIKEYA HITOSHI·Filed 2005·Granted Jan 3, 2012·4 cites·9 claims
- 0573US2025263365A1O-substituted serine derivative production methodCHUGAI PHARMACEUTICAL CO LTD·Filed 2025·Application pending·0 cites
- 0671US7807675B2Hyaluronic acid-methotrexate conjugateDENKI KAGAKU KOGYO KK·Filed 2005·Granted Oct 5, 2010·2 cites·10 claims
- 0771US6875770B2Indole derivative having heterocycle and mono- or diazaindole derivativeCHUGAI PHARMACEUTICAL CO LTD·Filed 2003·Granted Apr 5, 2005·5 cites·10 claims
- 0866US12312297B2O-substituted serine derivative production methodCHUGAI PHARMACEUTICAL CO LTD·Filed 2019·Granted May 27, 2025·0 cites·16 claims
- 0959US6673797B1Heterocyclic indole derivatives and mono- or diazaindole derivativesCHUGAI PHARMACEUTICAL CO LTD·Filed 1999·Granted Jan 6, 2004·13 cites·17 claims
- 1054US7612070B2Indole derivative having heterocycle and mono- or diazaindole derivativeCHUGAI PHARMACEUTICAL CO LTD·Filed 2005·Granted Nov 3, 2009·0 cites·9 claims
- 1146US2003065189A1Processes for producing 4-substituted benzopyran derivativesCHUGAI PHARMACEUTICAL CO LTD·Filed 2002·Application pending·0 cites
- 1233US6455708B1Processes for the preparation of 4-substituted benzopyran derivativesCHUGAI PHARMACEUTICAL CO LTD·Filed 1999·Granted Sep 24, 2002·0 cites·10 claims
- 1332US5646310AN-(2-cyanoethyl)-6-fluoroalkyl-2h-1-benzopyran derivativesCHUGAI PHARMACEUTICAL CO LTD·Filed 1994·Granted Jul 8, 1997·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →