US2541190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorination of lubricating oil
Assignee: Individual
•
Filing: 1944-06-20
•
Granted: 1951-02-13
•
Expires: 1964-06-20
Abstract
No abstract record available.
Inventors
- 👤 Anthony F Benning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:06
CPC Classifications
C; C07; C07C; C07C17/00; C10; C10M; C10M3/00; C10M2211/00; C10M2211/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE METHOD FOR THE FURTHER FLUORINATION OF A PARTIALLY FLUORINATED PRODUCT OBTAINED BY THE FLUORINATION OF A HYDROCARBON LUBRICATING OIL AND HAVING MOST OF THE HYDROGEN OF THE HYDROCARBON REPLACED BY FLUORINE, WHICH COMPRISES HEATING SAID PRODUCT IN UNDILUTED FORM IN LIQUID PHASE WITH COF3 AT A TEMPERATURE BETWEEN 200* AND 400* C.
Claim 2
Independent Claim
53 words
THE METHOD FOR THE FURTHER FLUORINATION OF A PARTIALLY FLUORINATED PRODUCT OBTAINED BY THE FLUORINATION OF A HYDROCARBON LUBRICATING OIL AND HAVING MOST OF THE HYDROGEN OF THE HYDROCARBON REPLACED BY FLUORINE, WHICH COMPRISES HEATING SAID PRODUCT IN UNDILUTED FORM IN LIQUID PHASE WITH COF3 AT A TEMPERATURE BETWEEN 200* AND 400* C.
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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) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |