US3759940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialkyl acetals of heterocyclic ureidoacetaldehyde
Assignee: Velsicol Chemical LLC
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Filing: 1971-12-13
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Granted: 1973-09-18
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Expires: 1991-12-13
Abstract
Abstract WHEREIN R1 and R2 are each alkyl of up to three carbon atoms. Further described are herbicidal compositions utilizing the above defined compositions. This invention discloses new chemical compounds of the formula
Inventors
- 👤 J Krenzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:18
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; A; A01; A01N; A01N47/00; A01N47/08; A01N47/28; A01N47/36
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
11 words
The compound of claim 1, the dimethyl acetal of 2-(3-(2-trifluoromethyl-1,3,4-thiadiazol-5-yl)ureido) acetaldehyde.
Claim 2
Dependent Claim
11 words
The compound of claim 1, the diethyl acetal of 2-(3-(2-trifluoromethyl-1,3,4-thiadiazol-5-yl)ureido) acetaldehyde.
Claim 3
Dependent Claim
11 words
The compound of claim 1, the dipropyl acetal of 2-(3-(2-trifluoromethyl-1,3,4-thiadiazol-5-yl)ureido) acetaldehyde.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |