Patent US2829146A successfully refreshed from Google Patents.
US2829146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrrolidine compounds
Assignee: Monsanto Chemicals Ltd
•
Filing: 1956-07-30
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Granted: 1958-04-01
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Expires: 1976-07-30
Abstract
No abstract record available.
Inventors
- 👤 David J Beaver
- 👤 Paul J Stoffel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:39
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
COMPOUNDS OF THE STRUCTURE
Claim 2
Dependent Claim
4 words
COMPOUNDS OF THE STRUCTURE
References Cited (Backward Citations)
US2651639A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |