Patents
US 11304908 B2: Tamper resistant dosage forms
- Granted
- 2022-04-19
- Filed
- 2020-09-21 application 17027222
- Type
- Utility · 30 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The present invention relates to pharmaceutical dosage forms, for example to a tamper resistant dosage form including an opioid analgesic, and processes of manufacture, uses, and methods of treatment thereof.
Source: PVGPATDIS, file of 2026-04-10 (ipg220419.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| PURDUE PHARMA L.P. 482 patents | US company or organization | Not reported | 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 | Not reported | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| William H. McKenna | Yonkers, NY | 43 | PVGPATDIS, file of 2026-04-10 | |
| Richard O. Mannion | Furlong, PA | 44 | PVGPATDIS, file of 2026-04-10 | |
| Edward P. O'Donnell | Berkeley Heights, NJ | 43 | PVGPATDIS, file of 2026-04-10 | |
| Haiyong Hugh Huang | Princeton, NJ | 67 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| A61K | Preparations for medical, dental or toiletry purposes | A61K9/28 | PVGPATDIS, file of 2026-04-10 |
| A61J | Containers specially adapted for medical or pharmaceutical purposes; devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms; devices for administering food or medicines orally; baby comforters; devices for receiving spittle | A61J3/005 | PVGPATDIS, file of 2026-04-10 |
| A61P | Specific therapeutic activity of chemical compounds or medicinal preparations | A61P25/00 | PVGPATDIS, file of 2026-04-10 |
| B29B | Preparation or pretreatment of the material to be shaped; making granules or preforms; recovery of plastics or other constituents of waste material containing plastics | B29B7/02 | PVGPATDIS, file of 2026-04-10 |
| B29C | Shaping or joining of plastics; shaping of material in a plastic state, not otherwise provided for; after-treatment of the shaped products, e.g. repairing | B29C35/045 | PVGPATDIS, file of 2026-04-10 |
| B29K | Indexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for ; moulds, ; reinforcements, fillers or preformed parts, e.g. inserts | B29K2071/02 | PVGPATDIS, file of 2026-04-10 |
| B29L | Indexing scheme associated with subclass b29c, relating to particular articles | B29L2031/753 | 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 |
|---|---|---|---|---|---|
| 2026-05-06 | Assignment Assignment of assignor's interest | PURDUE PHARMA L.P. signed 2026-05-01 | KNOA PHARMA LLC STAMFORD, CT | 75516/676 | PASDL, file of 2026-10-15 |
| 2021-05-20 | Assignment Assignment of assignor's interest | PURDUE PHARMA L.P. signed 2014-08-13 | PURDUE PHARMACEUTICALS L.P. WILSON, NC PURDUE PHARMA L.P STAMFORD, CT | 56298/571 | ECORSEXC, file of 2026-09-25 |
| 2021-05-20 | Assignment Assignment of assignor's interest | HUANG, HAIYONG H. signed 2007-08-20 MANNION, RICHARD O. signed 2007-08-23 MCKENNA, WILLIAM H. signed 2007-08-23 O'DONNELL, EDWARD P. signed 2007-08-23 | PURDUE PHARMA L.P. STAMFORD, CT | 56297/474 | 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.