Patent US3033873A successfully refreshed from Google Patents.
US3033873A
Expired / Lapsed
US
⏱️ 0.0 years remaining
21-aminomethyl-pregnenes
Assignee: Pfizer Inc
•
Filing: 1960-05-11
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Granted: 1962-05-08
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Expires: 1980-05-11
Abstract
No abstract record available.
Inventors
- 👤 Jr Ellis R Pinson
- 👤 Eugene J Agnello
- 👤 Gerald D Laubach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:51
CPC Classifications
C; C07; C07J; C07J41/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THOSE HAVING THE FORMULAE:
Claim 2
Dependent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF THOSE HAVING THE FORMULAE:
References Cited (Backward Citations)
US2562194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |