US3074991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dithiophosphonic acid esters and a process for their production
Assignee: Bayer AG
•
Filing: 1959-07-13
•
Granted: 1963-01-22
•
Expires: 1979-07-13
Abstract
No abstract record available.
Inventors
- 👤 Schrader Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:48
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4015; C07F9/4071; C07F9/4075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
A DITHIOPHOSPHONIC ACID ESTER OF THE FOLLOWING GENERAL FORMULA
Claim 2
Dependent Claim
9 words
A DITHIOPHOSPHONIC ACID ESTER OF THE FOLLOWING GENERAL FORMULA
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) | 1966-01-21 | 1966-07-23 | 1967-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-21 | 1970-07-23 | 1971-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-21 | 1974-07-23 | 1975-01-22 | $7700.00 | Window Closed / Lapsed |