Patent US2704769A successfully refreshed from Google Patents.
US2704769A
Expired / Lapsed
US
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Preparation of alpha-hydroperfluoronitriles
Assignee: 3M Co
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Filing: 1951-05-31
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Granted: 1955-03-22
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Expires: 1971-05-31
Abstract
No abstract record available.
Inventors
- 👤 Zerte James D La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:13
CPC Classifications
C; C07; C07C; C07C255/00; C07C255/01; C07C255/10; C07C253/00; C07C253/20; C07C255/02; C07C255/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
THE PROCESS OF PRODUCING AN ALIPHATIC HALOGENATED NITRILE HAVING THE FORMULA
Claim 2
Dependent Claim
11 words
THE PROCESS OF PRODUCING AN ALIPHATIC HALOGENATED NITRILE HAVING THE FORMULA
References Cited (Backward Citations)
GB607103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-03-21 | 1958-09-20 | 1959-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-03-21 | 1962-09-20 | 1963-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-03-21 | 1966-09-20 | 1967-03-22 | $7700.00 | Window Closed / Lapsed |