Patent US3681700A successfully refreshed from Google Patents.
Patent US4624353A successfully refreshed from Google Patents.
Patent US4511623A successfully refreshed from Google Patents.
Patent US2637639A successfully refreshed from Google Patents.
US2637639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-methylchlorophenoxyacetate herbicides
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1950-03-13
•
Granted: 1953-05-05
•
Expires: 1970-03-13
Abstract
No abstract record available.
Inventors
- 👤 Talbot Frank
- 👤 Foster Reginald Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:43
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/40; C07C59/58; C07C59/64; C07C59/66; C07C59/68; C07C59/70
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
56 words
A COMPOSITION OF MATTER CONTAINING A 2METHYLCHLOROPHENOXYACETATE WHICH IS CAPABLE OF GIVING A PHYSICALLY STABLE CONCENTRATED SOLUTION UPON BEING DISSOLVED IN WATER, SAID COMPOSITION COMPRISING AT LEAST 65% BY WEIGHT OF A WATERSOLUBLE SALT OF 2-METHYL-4-CHLOROPHENOXYACETIC ACID TOGETHER WITH FREE ALKALI IN AMOUNT EQUAL TO FORM 1.8% TO 6% OF THE WEIGHT OF THE SAID SALT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-05-04 | 1956-11-03 | 1957-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-04 | 1960-11-03 | 1961-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-04 | 1964-11-03 | 1965-05-05 | $7700.00 | Window Closed / Lapsed |