Patents
US 11174229 B2: D-amphetamine compounds, compositions, and processes for making and using the same
- Granted
- 2021-11-16
- Filed
- 2019-10-29 application 16667807
- Type
- Utility · 32 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Disclosed are d-amphetamine compounds and compositions comprising at least one organic acid covalently bound to d-amphetamine, having the structure of a salt thereof, a derivative thereof, or a combination thereof. Methods of making and using the same are also disclosed.
Source: PVGPATDIS, file of 2026-04-10 (ipg211116.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| KEMPHARM, INC. 57 patents | US company or organization | Four Corners, FL | KEMPHARM, INC Form D issuer EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Sven Guenther | Coralville, IA | 63 | PVGPATDIS, file of 2026-04-10 | |
| Guochen Chi | Coralville, IA | 41 | PVGPATDIS, file of 2026-04-10 | |
| Travis Mickle | Kissimmee, FL | 83 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C07D | Heterocyclic compounds | C07D213/79 | PVGPATDIS, file of 2026-04-10 |
| A61K | Preparations for medical, dental or toiletry purposes | A61K9/0019 | 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 |
|---|---|---|---|---|---|
| 2026-03-13 | Release of security interest Release of security interest | ALTER DOMUS (US) LLC signed 2026-03-12 | ZEVRA THERAPEUTICS, INC. CELEBRATION, FL | 75080/907 | PASDL, file of 2026-10-15 |
| 2024-04-08 | Security interest Security interest Security interest | ZEVRA THERAPEUTICS, INC. signed 2024-04-05 | ALTER DOMUS (US) LLC CHICAGO, IL | 67040/637 | PASDL, file of 2026-10-15 |
| 2024-02-23 | Name change Change of name | KEMPHARM, INC. signed 2023-02-21 | ZEVRA THERAPEUTICS, INC. CELEBRATION, FL | 66664/108 | PASDL, file of 2026-10-15 |
| 2019-12-11 | Assignment Assignment of assignor's interest | GUENTHER, SVEN signed 2019-02-08 CHI, GUOCHEN signed 2019-02-11 MICKLE, TRAVIS signed 2019-02-07 | KEMPHARM, INC. CELEBRATION, FL | 51246/117 | PASDL, file of 2026-10-15 |
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.