Patent US2938919A successfully refreshed from Google Patents.
US2938919A
Expired / Lapsed
US
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Thiophosphoric acid esters and a process for their manufacture
Assignee: Bayer AG
•
Filing: 1959-01-27
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Granted: 1960-05-31
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Expires: 1979-01-27
Abstract
No abstract record available.
Inventors
- 👤 Lorenz Walter
- 👤 Schrader Gerhard
- 👤 Dorken August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:05
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1653
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A THIOPHOSPHORIC ACID ESTER OF THE FOLLOWING FORMULA
Claim 2
Dependent Claim
8 words
A THIOPHOSPHORIC ACID ESTER OF THE FOLLOWING FORMULA
References Cited (Backward Citations)
US2803580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |