US2591589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gamma-nitroalkyl-alpha,beta-dichloro-gamma-crotonolactones
Assignee: Monsanto Chemicals Ltd
•
Filing: 1950-07-26
•
Granted: 1952-04-01
•
Expires: 1970-07-26
Abstract
No abstract record available.
Inventors
- 👤 David T Mowry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:48
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/58
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
LACTONES HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
5 words
LACTONES HAVING THE GENERAL FORMULA
Claim 3
Dependent Claim
4 words
Y- NITROMETHYL - A,B-DICHLORO-Y-CROTONOLACTONE.
Claim 4
Dependent Claim
4 words
Y- NITROMETHYL - A,B-DICHLORO-Y-CROTONOLACTONE.
References Cited (Backward Citations)
US2226183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-01 | 1955-10-01 | 1956-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-01 | 1959-10-01 | 1960-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-01 | 1963-10-01 | 1964-04-01 | $7700.00 | Window Closed / Lapsed |