Patent US3835132A successfully refreshed from Google Patents.
US3835132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Morpholino-piperazinyl pyrimidines
Assignee: Shell USA Inc
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Filing: 1973-09-21
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Granted: 1974-09-10
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Expires: 1993-09-21
Abstract
Abstract 2-MORPHOLINO-4-(ETHYLAMINO)-6-(1-PIPERAZINYL) PYRIMIDINE AND ITS DIHYDRO(MIDDLE HALIDE) SALTS, USEFUL AS ANTI-INFLAMMATORY AGENTS.
Inventors
- 👤 J Carr
- 👤 G Haynes
- 👤 J Albert
- 👤 K Kodama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:54
CPC Classifications
C; C07; C07D; C07D413/00; C07D413/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
The free base according to claim 1.
Claim 2
Dependent Claim
7 words
The dihydrochloride salt according to claim 1.
References Cited (Backward Citations)
US3707560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |