RK

Robert Kupper

RT Rhodes Technologies: 16 patents #1 of 27Top 4%
PP Purdue Pharma: 16 patents #22 of 189Top 15%
PP Purdue Pharmaceuticals: 10 patents #8 of 12Top 70%
TL The P.F. Laboratories: 6 patents #4 of 9Top 45%
WC W.R. Grace & Co.-Conn.: 5 patents #144 of 1,045Top 15%
ES Euro-Celtique S.A.: 5 patents #42 of 215Top 20%
RP Rhodes Pharmaceuticals: 3 patents #3 of 15Top 20%
W& W. R. Grace &: 2 patents #100 of 433Top 25%
UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 East Greenwich, RI: #9 of 687 inventorsTop 2%
🗺 Rhode Island: #83 of 6,211 inventorsTop 2%
Overall (All Time): #85,612 of 4,157,543Top 3%
38
Patents All Time

Issued Patents All Time

Showing 26–38 of 38 patents

Patent #TitleCo-InventorsDate
7572461 Borer-resistant wood, wood products, and wooden structures and methods Kenneth I. Sawyer 2009-08-11
7129248 Process for preparing oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinone Robert Chapman, Lonn S. Rider, Qi-Zhong Hong, Donald J. Kyle 2006-10-31
7084150 Analogs and prodrugs of buprenorphine F. Peter Boer 2006-08-01
6958398 Methods for making thebaine or its acid salts Arie Gutman, Igor Rukhman, Lev Yudovich, Gennady Nisnevich 2005-10-25
6784319 Synthesis of (±)-2-((dimethylamino)methyl)-1-(aryl)cyclohexanols Andreas Stumpf 2004-08-31
6649783 Synthesis of (+/-)-2-((dimethylamino)methyl)-1-(aryl)cyclohexanols Andreas Stumpf 2003-11-18
4873359 Process for preparing as partyl-phenylalanine dipeptides Alan B. Chmurny, Akiva Gross, Rowena L. Roberts 1989-10-10
4855455 Preparation of amino acid derivatives 1989-08-08
4851588 Novel process for the preparation of bronopol Felek Jachimowicz, Jennifer M. Quirk, Christer L. Hakansson 1989-07-25
4820881 Decolorization 1989-04-11
4810817 Aspartyl-beta substituted phenylalanine dipeptides Alan B. Chmurny, Akiva Gross, Rowena L. Roberts 1989-03-07
4801742 N-formylation of amino carboxylates with alkyl formates Jennifer M. Quirk, Charles G. Carter 1989-01-31
4710583 Dipeptides and process Alan B. Chmurny, Akiva Gross, Rowena L. Roberts 1987-12-01