US3407248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alpha-hydroxy-beta-fluoro-beta, beta dichloro-ethyl phosphonic acid, o, o-diester
Assignee: Bayer AG
•
Filing: 1965-05-28
•
Granted: 1968-10-22
•
Expires: 1985-05-28
Abstract
No abstract record available.
Inventors
- 👤 Klauke Erich
- 👤 Kuhle Engelbert
- 👤 Hammann Ingeborg
- 👤 Lorenz Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:39
CPC Classifications
A; A01; A01N; A01N57/00; A01N57/18; A01N57/20; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
O,O-DIALKYL ESTERS OF PHOSPHONIC ACID HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
9 words
O,O-DIALKYL ESTERS OF PHOSPHONIC ACID HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2579810A
Cited
US2701225A
Cited
US2818366A
Cited
US2906661A
Cited
US3053876A
Cited
US3059017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-22 | 1972-04-22 | 1972-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-22 | 1976-04-22 | 1976-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-22 | 1980-04-22 | 1980-10-22 | $7700.00 | Window Closed / Lapsed |