Patent US2642427A successfully refreshed from Google Patents.
US2642427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piperazine salts of cyclopentanopolyhydrophenanthrene-3-monosulfates
Assignee: Abbott Laboratories
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Filing: 1951-08-01
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Granted: 1953-06-16
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Expires: 1971-08-01
Abstract
No abstract record available.
Inventors
- 👤 Richard B Hasbrouck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:46
CPC Classifications
C; C07; C07J; C07J43/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A THERAPEUTIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF PIPERAZINE ESTRONE-3-MONOSULFATE, PIPERAZINE ESTRADIOL-3-MONOSULFATE, PIPERAZONE EQUILIN-3-MONOSULFATE AND PIPERAZINE EQUILENIN-3-MONOSULFATE.
Claim 2
Dependent Claim
18 words
A THERAPEUTIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF PIPERAZINE ESTRONE-3-MONOSULFATE, PIPERAZINE ESTRADIOL-3-MONOSULFATE, PIPERAZONE EQUILIN-3-MONOSULFATE AND PIPERAZINE EQUILENIN-3-MONOSULFATE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |