US2905683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ether containing esters of dithiophosphoric acid and salts thereof
Assignee: Lubrizol Corp
•
Filing: 1952-12-17
•
Granted: 1959-09-22
•
Expires: 1972-12-17
Abstract
No abstract record available.
Inventors
- 👤 Goldsmith Fred Corwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:37
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1651; C07F9/547; C07F9/6553; C07F9/655309
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
THE OIL-SOLUBLE DITHIOPHOSPHATES HAVING THE STRUCTURE:
Claim 2
Dependent Claim
6 words
THE OIL-SOLUBLE DITHIOPHOSPHATES HAVING THE STRUCTURE:
References Cited (Backward Citations)
US1893018A
Cited
US2369632A
Cited
US2343213A
Cited
FR976343A
Cited
GB658182A
Cited
US2579038A
Cited
US2579037A
Cited
US2585813A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |