Patent US2884431A successfully refreshed from Google Patents.
US2884431A
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Fluorinated diesters of phosphorodithioic acid and salts thereof
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-06-08
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Granted: 1959-04-28
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Expires: 1976-06-08
Abstract
No abstract record available.
Inventors
- 👤 Jr John O Smith
- 👤 Jr John V Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:53
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
29 words
AS A NEW COMPOSITION OF MATTER, A FLUORINATED ORGANO DITHIOPHOSPHATE CONTAINING ABOUT 0.01 TO 1.0 WT. PERCENT OF CHEMICALLY COMBINED FLUORINE, WHEREIN SAID ORGANO DITHIOPHOSPHATE HAS THE GENERAL FORMULA:
Claim 2
Dependent Claim
29 words
AS A NEW COMPOSITION OF MATTER, A FLUORINATED ORGANO DITHIOPHOSPHATE CONTAINING ABOUT 0.01 TO 1.0 WT. PERCENT OF CHEMICALLY COMBINED FLUORINE, WHEREIN SAID ORGANO DITHIOPHOSPHATE HAS THE GENERAL FORMULA:
Claim 3
Dependent Claim
18 words
A PROCESS FOR MILDLY FLUORINATING AN ORGANO DITHIOPHOSPHATE WHICH COMPRISES REACTING (1) A DITHIOPHOSPHATE HAVING THE GENERAL FORMULA:
Claim 4
Dependent Claim
18 words
A PROCESS FOR MILDLY FLUORINATING AN ORGANO DITHIOPHOSPHATE WHICH COMPRISES REACTING (1) A DITHIOPHOSPHATE HAVING THE 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) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |