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Patent US3240825A successfully refreshed from Google Patents.
US3240825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Homotelomers of 2,3,3,3-tetrafluoropropene-1 and method for making same
Assignee: Pennwalt Corp
•
Filing: 1963-01-14
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Granted: 1966-03-15
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Expires: 1983-01-14
Abstract
No abstract record available.
Inventors
- 👤 Hauptschein Murray
- 👤 Braid Milton
- 👤 Lawlor Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:31
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/204; C07C17/26; C07C17/272; C07C17/278; C07C19/00; C07C19/08; C07C19/16; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10N; C10N2040/00; C10N2040/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
7 words
FLUORINE CONTAINING ORGANIC COMPOUNDS HAVING THE FORMULA
Claim 2
Dependent Claim
7 words
FLUORINE CONTAINING ORGANIC COMPOUNDS HAVING THE FORMULA
Claim 3
Independent Claim
26 words
A METHOD OF MAKING FLUORINE CONTAINING ORGANIC COMPOUNDS WHICH COMPRISES HEATING AT A TEMPERATURE OF BETWEEN ABOUT 100*C. AND ABOUT 350*C. A TELOGEN HAVING THE FORMULA
Claim 4
Independent Claim
26 words
A METHOD OF MAKING FLUORINE CONTAINING ORGANIC COMPOUNDS WHICH COMPRISES HEATING AT A TEMPERATURE OF BETWEEN ABOUT 100*C. AND ABOUT 350*C. A TELOGEN HAVING THE FORMULA
References Cited (Backward Citations)
US2856440A
Cited
US2931840A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |