US2824897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perchlorofluoro alcohols
Assignee: 3M Co
•
Filing: 1955-06-24
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Granted: 1958-02-25
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Expires: 1975-06-24
Abstract
No abstract record available.
Inventors
- 👤 Donald W Wujciak
- 👤 Robert H Wade
- 👤 William S Barnhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:28
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132; C07C29/136; C07C29/14; C07C29/143; C07C29/145; C07C29/147; C07C29/32; C07C29/36; C07C29/38; C07C29/40; C07C31/00; C07C31/34; C07C31/42; C07C31/44; C07C33/00; C07C33/40; C07C33/44; C07C2601/00; C07C2601/06; C07C2601/10; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
AN ALCOHOL HAVING A PERFLUOROCHLOROCARBON CHAIN HAVING THE RECURRING UNIT, -CF2CFCI-, SAID CHAIN BEING BONDED AT ONE TERMINUS BY A RADICAL SELECTED FROM THE GROUP CONSISTING OF A CHLORINE ATOM, A PERHALOMETHYL RADICAL HAVING AN ATOMIC WEIGHT NOT IN EXCESS OF 146.5, A -CF2CFHCF2- DIVALENT RADICAL, A -CF2CFH- DIVALENT RADICAL, A -CFCI- DIVALENT RADICAL, A -CFHCFCI- DIVALENT RADICAL AND A -CF2-DIVALENT RADICAL, SAID PERFLUOROCHLOROCARBON CHAIN BEING BONDED AT ITS OTHER TERMINUS ONLY BY ONE OF SAID DIVALENT RADICALS AND IN WHICH EACH OF SAID DIVALENT RADICALS IS ADDITIONALLY BONDED TO A HYDROXYL-CONTAINING GROUP SELECTED FROM THE GROUP OF CONSISTING OF
Claim 2
Dependent Claim
100 words
AN ALCOHOL HAVING A PERFLUOROCHLOROCARBON CHAIN HAVING THE RECURRING UNIT, -CF2CFCI-, SAID CHAIN BEING BONDED AT ONE TERMINUS BY A RADICAL SELECTED FROM THE GROUP CONSISTING OF A CHLORINE ATOM, A PERHALOMETHYL RADICAL HAVING AN ATOMIC WEIGHT NOT IN EXCESS OF 146.5, A -CF2CFHCF2- DIVALENT RADICAL, A -CF2CFH- DIVALENT RADICAL, A -CFCI- DIVALENT RADICAL, A -CFHCFCI- DIVALENT RADICAL AND A -CF2-DIVALENT RADICAL, SAID PERFLUOROCHLOROCARBON CHAIN BEING BONDED AT ITS OTHER TERMINUS ONLY BY ONE OF SAID DIVALENT RADICALS AND IN WHICH EACH OF SAID DIVALENT RADICALS IS ADDITIONALLY BONDED TO A HYDROXYL-CONTAINING GROUP SELECTED FROM THE GROUP OF CONSISTING OF
References Cited (Backward Citations)
US2559628A
Cited
US2666797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |