Inventor
CHAPMAN ROBERT
US25 patents
⚠️ This page may combine multiple inventors who share the name “CHAPMAN ROBERT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PURDUE PHARMA LP
13 patentsUS7683072B2Mar 23, 2010
Oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinone
PURDUE PHARMA LP178 citations99
US7674799B2Mar 9, 2010
Oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinone
PURDUE PHARMA LP171 citations99
US7674800B2Mar 9, 2010
Oxycodone hydrochloride having less than 25 PPM 14-hydroxycodeinone
PURDUE PHARMA LP165 citations99
US7674798B2Mar 9, 2010
Oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinone
PURDUE PHARMA LP28 citations96
US10407434B2Sep 10, 2019
Process for preparing oxycodone compositions
PURDUE PHARMA LP9 citations92
US11236098B2Feb 1, 2022
Process for preparing oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinone
PURDUE PHARMA LP2 citations84
US10696684B2Jun 30, 2020
Process for preparing oxycodone hydrochloride having less than 25 PPM 14-hydroxycodeinone
PURDUE PHARMA LP4 citations84
US10689389B2Jun 23, 2020
Process for preparing oxycodone compositions
PURDUE PHARMA LP5 citations84
US9777011B2Oct 3, 2017
Process for preparing oxycodone compositions
PURDUE PHARMA LP4 citations84
US9522919B2Dec 20, 2016
Oxycodone compositions
PURDUE PHARMA LP4 citations84
US12060361B2Aug 13, 2024
Process for preparing oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinone
PURDUE PHARMA LP0 citations73
US11384091B2Jul 12, 2022
Process for preparing oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinone
PURDUE PHARMA LP0 citations73
US10259819B2Apr 16, 2019
Process for preparing oxycodone compositions
PURDUE PHARMA LP1 citations73
CHAPMAN ROBERT
5 patentsUS9073933B2Jul 7, 2015
Oxycodone hydrochloride having less than 25 PPM 14-hydroxycodeinone
CHAPMAN ROBERT16 citations95
US8822687B2Sep 2, 2014
8a,14-dihydroxy-7,8-dihydrocodeinone
CHAPMAN ROBERT7 citations92
USPP28422P3Sep 19, 2017
Viola plant named ‘Sunny Jim’
CHAPMAN ROBERT0 citations51
USPP28353P3Aug 29, 2017
Viola plant named ‘Sweetheart’
CHAPMAN ROBERT0 citations51
USPP28352P3Aug 29, 2017
Viola plant named ‘Bonny’
CHAPMAN ROBERT0 citations51