US3426073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mesomeric phosphonium salts
Assignee: Monsanto Co
•
Filing: 1966-03-30
•
Granted: 1969-02-04
•
Expires: 1986-03-30
Abstract
No abstract record available.
Inventors
- 👤 Gail H Birum
- 👤 Clifford N Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:55
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/54; B; B01; B01J; B01J41/00; B01J41/08; B01J41/09; C07F9/535; C07F9/5352; C07F9/5449; C08; C08K; C08K5/00; C08K5/49; C08K5/50; C08K5/51; C08K5/53; C08K5/5397; D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/285
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
COMPOUNDS AS REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
6 words
COMPOUNDS AS REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
US3374256A
Cited
US3330868A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |