US2912452A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thiophosphoric acid esters and their production
Assignee: Bayer AG
•
Filing: 1957-04-12
•
Granted: 1959-11-10
•
Expires: 1977-04-12
Abstract
No abstract record available.
Inventors
- 👤 Schrader Gerhard
- 👤 Schlor Hanshelmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:06
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1651
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
A THIOPHOSPHORIC ACID ESTER OF THE FORMULA
Claim 2
Dependent Claim
7 words
A THIOPHOSPHORIC ACID ESTER OF THE 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) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |