US2802034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of perfluoroheptan-4-one and its hydrate
Assignee: Pennwalt Corp
•
Filing: 1956-05-29
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Granted: 1957-08-06
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Expires: 1976-05-29
Abstract
No abstract record available.
Inventors
- 👤 Hauptschein Murray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:19
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/45; C07C45/48; C07C45/51; C07C45/511; C07C45/513
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
14 words
A METHOD FOR MAKING PERFLUOROHEPTAN-4-ONE WHICH COMPRISES REACTING A COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Independent Claim
14 words
A METHOD FOR MAKING PERFLUOROHEPTAN-4-ONE WHICH COMPRISES REACTING A COMPOUND HAVING THE GENERAL FORMULA
Claim 3
Dependent Claim
1 words
PERFLUOROHEPTANE-4,4-DIOL
Claim 4
Dependent Claim
1 words
PERFLUOROHEPTANE-4,4-DIOL
References Cited (Backward Citations)
US2568500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |