Inventor · disambiguated record
Robert Kupper
Also filed as: KUPPER ROBERT · KUPPER ROBERT J
38 granted patents·20 pending applications·952 citations·filing 1985–2025
98Inventor score
Top patents by PatentIndex Score
58 records- 0198US7683072B2Oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinonePURDUE PHARMA LP·Filed 2007·Granted Mar 23, 2010·178 cites·14 claims
- 0298US7674800B2Oxycodone hydrochloride having less than 25 PPM 14-hydroxycodeinonePURDUE PHARMA LP·Filed 2007·Granted Mar 9, 2010·165 cites·81 claims
- 0398US7674799B2Oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinonePURDUE PHARMA LP·Filed 2007·Granted Mar 9, 2010·171 cites·19 claims
- 0498US7129248B2Process for preparing oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinoneEURO CELTIQUE SA·Filed 2005·Granted Oct 31, 2006·171 cites·18 claims
- 0597US7939543B2Method of reducing α, β unsaturated ketones in opioid compositionsPURDUE PHARMA LP·Filed 2006·Granted May 10, 2011·66 cites·22 claims
- 0697US7674798B2Oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinonePURDUE PHARMA LP·Filed 2007·Granted Mar 9, 2010·28 cites·17 claims
- 0796US11236098B2Process for preparing oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinonePURDUE PHARMA LP·Filed 2021·Granted Feb 1, 2022·2 cites·22 claims
- 0896US10696684B2Process for preparing oxycodone hydrochloride having less than 25 PPM 14-hydroxycodeinonePURDUE PHARMA LP·Filed 2019·Granted Jun 30, 2020·4 cites·17 claims
- 0996US10689389B2Process for preparing oxycodone compositionsPURDUE PHARMA LP·Filed 2019·Granted Jun 23, 2020·5 cites·15 claims
- 1096US10407434B2Process for preparing oxycodone compositionsPURDUE PHARMA LP·Filed 2019·Granted Sep 10, 2019·9 cites·20 claims
- 1195US9073933B2Oxycodone hydrochloride having less than 25 PPM 14-hydroxycodeinoneCHAPMAN ROBERT·Filed 2012·Granted Jul 7, 2015·16 cites·20 claims
- 1291US9777011B2Process for preparing oxycodone compositionsPURDUE PHARMA LP·Filed 2016·Granted Oct 3, 2017·4 cites·27 claims
- 1391US9522919B2Oxycodone compositionsPURDUE PHARMA LP·Filed 2015·Granted Dec 20, 2016·4 cites·28 claims
- 1490US12060361B2Process for preparing oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinonePURDUE PHARMA LP·Filed 2023·Granted Aug 13, 2024·0 cites·29 claims
- 1590US8822687B28a,14-dihydroxy-7,8-dihydrocodeinoneCHAPMAN ROBERT·Filed 2010·Granted Sep 2, 2014·7 cites·1 claims
- 1689US11091496B2Opioid ketal compounds and uses thereofRHODES TECH·Filed 2019·Granted Aug 17, 2021·2 cites·14 claims
- 1786US10624859B2Systems and methods for increasing stability of dronabinol compositionsRHODES TECH·Filed 2013·Granted Apr 21, 2020·2 cites·18 claims
- 1886US2023159548A1Process for preparing oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinonePURDUE PHARMA LP·Filed 2022·Application pending·0 cites
- 1985US7084150B2Analogs and prodrugs of buprenorphineEURO CELTIQUE SA·Filed 2003·Granted Aug 1, 2006·33 cites·16 claims
- 2085US6958398B1Methods for making thebaine or its acid saltsEURO CELTIQUE SA·Filed 2003·Granted Oct 25, 2005·15 cites·49 claims
- 2184US10259819B2Process for preparing oxycodone compositionsPURDUE PHARMA LP·Filed 2017·Granted Apr 16, 2019·1 cites·2 claims
- 2280US2023218534A1Systems and methods for increasing stability of dronabinol compositionsRHODES TECH·Filed 2022·Application pending·0 cites
- 2380US2025360084A1Systems and methods for increasing stability of dronabinol compositionsRHODES TECH·Filed 2025·Application pending·0 cites
- 2479US10988480B2Opioid ketal compounds and uses thereofRHODES TECH·Filed 2016·Granted Apr 27, 2021·1 cites·9 claims
- 2579US4710583ADipeptides and processGRACE W R & CO·Filed 1985·Granted Dec 1, 1987·20 cites·19 claims
- 2678US11731979B2Opioid ketal compounds and uses thereofRHODES TECH·Filed 2021·Granted Aug 22, 2023·0 cites·11 claims
- 2778US11384091B2Process for preparing oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinonePURDUE PHARMA LP·Filed 2020·Granted Jul 12, 2022·0 cites·25 claims
- 2877US2024423974A1Tamper Resistant Immediate Release FormulationsRHODES PHARMACEUTICALS LP·Filed 2024·Application pending·0 cites
- 2974US4801742AN-formylation of amino carboxylates with alkyl formatesGRACE W R & CO·Filed 1987·Granted Jan 31, 1989·11 cites·18 claims
- 3073US11571392B2Systems and methods for increasing stability of dronabinol compositionsRHODES TECH·Filed 2020·Granted Feb 7, 2023·0 cites·11 claims
- 3173US2009227615A1Oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinonePURDUE PHARMA LP·Filed 2009·Application pending·0 cites
- 3272US11773107B2Opioid ketal compounds and uses thereofRHODES TECH·Filed 2020·Granted Oct 3, 2023·0 cites·7 claims
- 3372US11130765B2Opioid ketal compounds and uses thereofRHODES TECH·Filed 2020·Granted Sep 28, 2021·0 cites·14 claims
- 3471US12128042B2Tamper resistant immediate release formulationsRHODES PHARMACEUTICALS LP·Filed 2021·Granted Oct 29, 2024·0 cites·23 claims
- 3571US6649783B2Synthesis of (+/-)-2-((dimethylamino)methyl)-1-(aryl)cyclohexanolsEURO CELTIQUE SA·Filed 2001·Granted Nov 18, 2003·4 cites·13 claims
- 3667US2016185788A1Process for preparing oxycodone compositionsPURDUE PHARMA LP·Filed 2016·Application pending·0 cites
- 3767US2016251363A1Process for preparing oxycodone compositionsPURDUE PHARMA LP·Filed 2016·Application pending·0 cites
- 3867US2016251365A1Process for preparing oxycodone compositionsPURDUE PHARMA LP·Filed 2016·Application pending·0 cites
- 3967US2016185789A1Process for preparing oxycodone compositionsPURDUE PHARMA LP·Filed 2016·Application pending·0 cites
- 4067US2016264588A1Process for preparing oxycodone compositionsPURDUE PHARMA LP·Filed 2016·Application pending·0 cites
- 4167US2016251364A1Process for preparing oxycodone compositionsPURDUE PHARMA LP·Filed 2016·Application pending·0 cites
- 4267US2016185790A1Process for preparing oxycodone compositionsPURDUE PHARMA LP·Filed 2016·Application pending·0 cites
- 4365US4851588ANovel process for the preparation of bronopolGRACE W R & CO·Filed 1988·Granted Jul 25, 1989·8 cites·20 claims
- 4465US2006173029A1Oxycodone hydrochloride having less than 25 ppm 14- hydroxycodeinoneEURO CELTIQUE SA·Filed 2006·Application pending·0 cites
- 4564US2016244459A1Opioid ketal compounds and uses thereofKUPPER ROBERT J·Filed 2014·Application pending·0 cites
- 4663US2011207762A1Oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinonePURDUE PHARMA LP·Filed 2010·Application pending·0 cites
- 4759US4873359AProcess for preparing as partyl-phenylalanine dipeptidesGRACE W R & CO·Filed 1987·Granted Oct 10, 1989·10 cites·4 claims
- 4859US4820881ADecolorizationGRACE W R & CO·Filed 1988·Granted Apr 11, 1989·5 cites·14 claims
- 4957US11173155B2Tamper resistant immediate release formulationsRHODES PHARMAEUTICALS L P·Filed 2013·Granted Nov 16, 2021·0 cites·23 claims
- 5054US2009263196A1Borer-Resistant Wood, Wood Products, and Wooden Structures and MethodsSAWYER KENNETH I·Filed 2009·Application pending·0 cites
Showing the top 50 of 58 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →