Patents
US 10689389 B2: Process for preparing oxycodone compositions
- Granted
- 2020-06-23
- Filed
- 2019-08-30 application 16557937
- Type
- Utility · 15 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
In certain embodiments the invention is directed to a process for preparing an oxycodone hydrochloride composition having less than 25 ppm of 14-hydroxycodeinone.
Source: PVGPATDIS, file of 2026-04-10 (ipg200623.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| PURDUE PHARMA L.P. 482 patents | US company or organization | Stamford, CT | PURDUE PHARMA L.P. State business registration EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
| PURDUE PHARMACEUTICALS L.P. 81 patents | US company or organization | Wilson, NC | PVGPATDIS, file of 2026-04-10 | |
| RHODES TECHNOLOGIES 47 patents | US company or organization | West Greenwich, RI | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Robert Chapman | Downingtown, PA | 18 | PVGPATDIS, file of 2026-04-10 | |
| Lonn S. Rider | Foster, RI | 18 | PVGPATDIS, file of 2026-04-10 | |
| Qi-Zhong Hong | Sharon, MA | 37 | PVGPATDIS, file of 2026-04-10 | |
| Donald J. Kyle | Yardley, PA | 60 | PVGPATDIS, file of 2026-04-10 | |
| Robert Kupper | East Greenwich, RI | 24 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C07D | Heterocyclic compounds | C07D489/08 | PVGPATDIS, file of 2026-04-10 |
| A61K | Preparations for medical, dental or toiletry purposes | A61K9/14 | PVGPATDIS, file of 2026-04-10 |
| A61P | Specific therapeutic activity of chemical compounds or medicinal preparations | A61P25/04 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2020-04-10 | Assignment Assignment of assignor's interest | PURDUE PHARMA TECHNOLOGIES, INC. signed 2019-04-08 THE P.F. LABORATORIES, INC. signed 2019-04-08 | PURDUE PHARMA L.P. STAMFORD, CT | 52370/1 | ECORSEXC, file of 2026-09-25 |
| 2020-04-10 | Assignment Assignment of assignor's interest | PURDUE PHARMA L.P. signed 2010-05-05 | PURDUE PHARMACEUTICALS L.P. WILSON, NC THE P.F. LABORATORIES, INC. WILSON, NC RHODES TECHNOLOGIES COVENTRY, RI PURDUE PHARMA L.P. STAMFORD, CT | 52369/967 | ECORSEXC, file of 2026-09-25 |
| 2020-04-10 | Assignment Assignment of assignor's interest | EURO-CELTIQUE S.A. signed 2006-08-12 | PURDUE PHARMA L.P. STAMFORD, CT | 52369/960 | ECORSEXC, file of 2026-09-25 |
| 2020-04-10 | Assignment Assignment of assignor's interest | CHAPMAN, ROBERT signed 2005-03-31 HONG, QI signed 2005-03-31 RIDER, LONN S signed 2005-03-31 KYLE, DONALD signed 2005-04-01 | EURO-CELTIQUE S.A. LUXEMBOURG | 52369/946 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.