Inventor · disambiguated record
Kwen-Jen Chang
Also filed as: CHANG KWEN-JEN
25 granted patents·7 pending applications·577 citations·filing 1977–2017
96Inventor score
Files withCHANG KWEN-JEN9DELTA PHARMACEUTICALS INC8VERSI GROUP LLC4ARDENT PHARMACEUTICALS INC3BURROUGHS WELLCOME CO3
Top patents by PatentIndex Score
32 records- 0195US5574159AOpioid compounds and methods for making thereforDELTA PHARMACEUTICALS INC·Filed 1995·Granted Nov 12, 1996·113 cites·8 claims
- 0293US5681830AOpioid compoundsDELTA PHARMACEUTICALS INC·Filed 1994·Granted Oct 28, 1997·65 cites·24 claims
- 0390US5658908AOpioid diarylmethylpiperazines and piperdinesDELTA PHARMACEUTICALS INC·Filed 1993·Granted Aug 19, 1997·84 cites·26 claims
- 0487US5854249AOpioid diarylmethylpiperazines and piperidinesDELTA PHARMACEUTICALS INC·Filed 1997·Granted Dec 29, 1998·74 cites·22 claims
- 0586US7314880B2Cardioprotective delta opioid receptor agonists and methods of using sameMOUNT COOK BIOSCIENCES INC·Filed 2003·Granted Jan 1, 2008·27 cites·18 claims
- 0682US7189725B2Enantiomerically pure opioid diarylmethylpiperazine as a cardioprotection agentMOUNT COOK BIOSCIENCES INC·Filed 2005·Granted Mar 13, 2007·4 cites·23 claims
- 0782US7030124B2Method of treating depression with delta receptor agonist compoundsARDENT PHARMACEUTICALS INC·Filed 2002·Granted Apr 18, 2006·21 cites·8 claims
- 0881US9296707B2Delta opioid receptor agonist compoundsVERSI GROUP LLC·Filed 2014·Granted Mar 29, 2016·1 cites·2 claims
- 0980US5985880ACompositions and methods for reducing respiratory depression and attendant side effects of mu opioid compoundsDELTA PHARMACEUTICALS INC·Filed 1997·Granted Nov 16, 1999·39 cites·24 claims
- 1079US9701645B2Method of treating Parkinson's disease with a diarylmethylpiperazine compounds exhibiting delta opioid receptor agonist activityCHANG KWEN-JEN·Filed 2014·Granted Jul 11, 2017·2 cites·2 claims
- 1179US6919350B2Compositions and methods for reducing respiratory depression and attendant side effects of mu opioid compoundsARDENT PHARMACEUTICALS INC·Filed 2001·Granted Jul 19, 2005·9 cites·29 claims
- 1278US6924288B2Enantiomerically pure opioid diarylmethylpiperzine and methods of using sameARDENT PHARMACEUTICALS INC·Filed 2002·Granted Aug 2, 2005·11 cites·18 claims
- 1377US5807858ACompositions and methods for reducing respiratory depressionDELTA PHARMACEUTICALS INC·Filed 1996·Granted Sep 15, 1998·54 cites·46 claims
- 1474US8642599B2Method of treating Parkinson's Disease with diarylmethylpiperazine compounds exhibiting delta receptor agonist activityCHANG KWEN-JEN·Filed 2006·Granted Feb 4, 2014·2 cites·4 claims
- 1574US6300332B1Methods for reducing respiratory depression and attendant side effects of mu opioid compoundsDELTA PHARMACEUTICALS INC·Filed 1999·Granted Oct 9, 2001·23 cites·25 claims
- 1673US5552404AOpioid compounds and methods for using sameDELTA PHARMACEUTICALS INC·Filed 1995·Granted Sep 3, 1996·36 cites·20 claims
- 1770US7683168B2Compositions of novel opioid compounds and method of use thereofMOUNT COOK BIO SCIENCES INC·Filed 2006·Granted Mar 23, 2010·3 cites·1 claims
- 1869US2007173515A1Delta opioid receptor agonist compoundsMOUNT COOK BIOSCIENCES INC·Filed 2007·Application pending·0 cites
- 1966US8865721B2Delta opioid receptor agonist compoundsVERSI GROUP LLC·Filed 2013·Granted Oct 21, 2014·0 cites·2 claims
- 2063US2016200689A1Delta opioid receptor agonist compoundsVERSI GROUP LLC·Filed 2016·Application pending·0 cites
- 2162US8551998B2Delta opioid receptor agonist compoundsCHANG KWEN-JEN·Filed 2012·Granted Oct 8, 2013·0 cites·2 claims
- 2262US2008193383A1Compositions and methods for reducing respiratory depression and attendant side effects of mu opioid compoundsCHANG KWEN-JEN·Filed 2008·Application pending·0 cites
- 2360US10071093B2Method of treating Parkinson's Disease with a diarylmethylpiperazine compounds exhibiting delta opioid receptor agonist activityVERSI GROUP LLC·Filed 2017·Granted Sep 11, 2018·0 cites·1 claims
- 2456US2005255151A1Compositions and methods for reducing respiratory depression and attendant side effects of mu opioid compoundsCHANG KWEN-JEN·Filed 2005·Application pending·0 cites
- 2553US2008125443A1Cardioprotective delta opioid receptor agonists and methods of using sameCHANG KWEN-JEN·Filed 2007·Application pending·0 cites
- 2651US8575169B2Method of treating sexual dysfunctions with delta opioid receptor agonist compoundsCHANG KWEN-JEN·Filed 2003·Granted Nov 5, 2013·0 cites·5 claims
- 2749US2007197786A1Enantiomerically pure opioid diarylmethylpiperazineCHANG KWEN-JEN·Filed 2007·Application pending·0 cites
- 2845US4231923AAssay method and compoundsBURROUGHS WELLCOME CO·Filed 1977·Granted Nov 4, 1980·4 cites·10 claims
- 2942US8476280B2Compositions and methods for combating lower urinary tract dysfunctions with delta opioid receptor agonistsCHANG KWEN-JEN·Filed 2003·Granted Jul 2, 2013·0 cites·8 claims
- 3037US2002052007A1Diarylmethylbenzylpiperazines and corresponding halobenzyl derivativesFiled 2001·Application pending·0 cites
- 3135US4257773AAssay method and compoundsBURROUGHS WELLCOME CO·Filed 1979·Granted Mar 24, 1981·4 cites·15 claims
- 3233US4263255AAssay method and compoundsBURROUGHS WELLCOME CO·Filed 1979·Granted Apr 21, 1981·1 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →