Growing community of inventors

Downingtown, PA, United States of America

Robert Chapman

Average Co-Inventor Count = 5.00

ph-index = 6

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 621

Robert ChapmanDonald Kyle (16 patents)Robert ChapmanRobert J Kupper (16 patents)Robert ChapmanQi Hong (16 patents)Robert ChapmanLonn S Rider (16 patents)Robert ChapmanSusan Mancini Cady (2 patents)Robert ChapmanChunhua Yang (2 patents)Robert ChapmanDonald J Kyle (15 patents)Robert ChapmanUday Jain (2 patents)Robert ChapmanBaoqing Ma (2 patents)Robert ChapmanRobert Joe Kupper (0 patent)Robert ChapmanRobert Chapman (18 patents)Donald KyleDonald Kyle (316 patents)Robert J KupperRobert J Kupper (31 patents)Qi HongQi Hong (20 patents)Lonn S RiderLonn S Rider (19 patents)Susan Mancini CadySusan Mancini Cady (30 patents)Chunhua YangChunhua Yang (15 patents)Donald J KyleDonald J Kyle (15 patents)Uday JainUday Jain (5 patents)Baoqing MaBaoqing Ma (2 patents)Robert Joe KupperRobert Joe Kupper (0 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Purdue Pharma L.p. (15 from 545 patents)

2. Purdue Pharmaceuticals L.p. (10 from 77 patents)

3. Rhodes Technologies (10 from 45 patents)

4. The P.f. Laboratories, Inc. (6 from 39 patents)

5. Merial Limited (2 from 320 patents)

6. Euro-celtique S.a. (1 from 270 patents)


18 patents:

1. 12060361 - Process for preparing oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinone

2. 11384091 - Process for preparing oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinone

3. 11236098 - Process for preparing oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinone

4. 10696684 - Process for preparing oxycodone hydrochloride having less than 25 PPM 14-hydroxycodeinone

5. 10689389 - Process for preparing oxycodone compositions

6. 10407434 - Process for preparing oxycodone compositions

7. 10259819 - Process for preparing oxycodone compositions

8. 9777011 - Process for preparing oxycodone compositions

9. 9522919 - Oxycodone compositions

10. 9073933 - Oxycodone hydrochloride having less than 25 PPM 14-hydroxycodeinone

11. 9044453 - Long-acting injectable moxidectin formulations and novel moxidectin crystal forms

12. 8822687 - 8a,14-dihydroxy-7,8-dihydrocodeinone

13. 8715711 - Long-acting injectable moxidectin formulations and novel moxidectin crystal forms

14. 7683072 - Oxycodone hydrochloride having less than 25 ppm 14-hydroxycodeinone

15. 7674800 - Oxycodone hydrochloride having less than 25 PPM 14-hydroxycodeinone

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as of
12/25/2025
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