US2888481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluoroalkyl phosphite and phosphonate lubricants and lubricant additives
Assignee: Ford Motor Co
•
Filing: 1957-02-04
•
Granted: 1959-05-26
•
Expires: 1977-02-04
Abstract
No abstract record available.
Inventors
- 👤 Glenn R Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:38
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141; C07F9/1411; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
25 words
A LUBRICANT SELCTED FROM THE GROUP CONSISTING OF FLUORINATED ALKYL PHOSPHITES AND FLUORINATED ALKYL PHOSPHONATES IN WHICH THE FLUORINATED ALKYL PHOSPHITES CORRESPOND TO THE FORMULA
References Cited (Backward Citations)
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US2559754A
Cited
US2708204A
Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |