Patents
US 11897886 B2: Pyrazolo[4,3-d]pyrimidines as antitumor agents
- Granted
- 2024-02-13
- Filed
- 2020-11-02 application 16949519
- Type
- Utility · 1 claim
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A compound of Formula II, or optionally a salt or a hydrate of the compound of Formula II is provided: wherein R1 is selected from the group consisting of a hydrogen, an alkyl group having from one to six carbon atoms, an aryl group, and a heteroaryl group; R2 is selected from the group consisting of an alkyl group having from one to six carbon atoms, a hydrogen, a NRaRb group wherein Ra is either a hydrogen or an alkyl group having from one to six carbon atoms and Rb is either a hydrogen or an alkyl group having from one to six carbon atoms, an aryl group, a heteroaryl group, and a halogen; R is an alkyl group having from one to six carbon atoms; and Ar is selected from the group consisting of an alkyl group having from one to six carbon atoms, a substituted aryl, and a substituted heteroaryl.
Source: PVGPATDIS, file of 2026-04-10 (ipg240213_r1.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Duquesne University of the Holy Spirit 70 patents | US company or organization | Pittsburgh, PA | Duquesne University College or university EXACT high confidence: through the nonprofit with the college's EIN (identical full name and state) DUQUESNE UNIVERSITY OF THE HOLY SPIRIT Federal lobbying client EXACT high confidence: identical full name and state DUQUESNE UNIVERSITY OF THE HOLY SPIRIT Nonprofit EXACT high confidence: identical full name and state | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Aleem Gangjee | Allison Park, PA | 65 | Person page FUZZY high confidence | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C07D | Heterocyclic compounds | C07D487/04 | PVGPATDIS, file of 2026-04-10 |
| A61P | Specific therapeutic activity of chemical compounds or medicinal preparations | A61P35/00 | 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 |
|---|---|---|---|---|---|
| 2020-11-02 | Assignment Assignment of assignor's interest | GANGJEE, ALEEM signed 2020-04-14 | DUQUESNE UNIVERSITY OF THE HOLY SPIRIT PITTSBURGH, PA | 54243/522 | 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.