Patent US3274081A successfully refreshed from Google Patents.
US3274081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrochemical process for making fluorine-containing carbon compounds
Assignee: 3M Co
•
Filing: 1962-09-20
•
Granted: 1966-09-20
•
Expires: 1982-09-20
Abstract
No abstract record available.
Inventors
- 👤 Wilbur H Pearlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:43
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/347; C07C51/363; C07C51/58; C07C51/62; C07C53/00; C07C53/38; C07C53/46; C07C53/50; C07C59/00; C07C59/125; C07C59/135; C07C59/235; C07C59/305; C07C59/315; C25; C25B; C25B3/00; C25B3/01; C25B3/07; C25B3/11; C25B3/20; C25B3/27; C25B3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A PROCESS FOR THE ELECTROCHEMICAL FLUORINATION OF AN ORGANIC ACID HALIDE STARTING COMPOUND UTILIZING ANHYDROUS LIQUID HYDROGEN FLUORIDE, THE IMPROVEMENT WHICH COMPRISES INTRODUCING INTO THE ELECTROCHEMICAL CELL AS THE STARTING COMPOUND A PARTIALLY CHAIN HALOGEN-SUBSTITUTED ORGANIC ACID HALIDE IN WHICH THE HALOGEN SUBSTITUTION IS ONLY FLUORINE AND HAVING ATTACHED TO THE ACID HALIDE RADICAL AN OPEN CHAIN COMPRISING AT LEAST TWO SKELETAL ATOMS, WHICH SKELETAL ATOMS ARE ONLY CABON AND NOT MORE THAN ONE HETTERO ATOM AND THAT ONE THETERO ATOM SEPARATED FROM THE ACID HALIDE RADICAL BY AT LEAST ONE CARBON ATOM, AND HAVING AT LEAST ONE OF SAID SKELETAL CARBON ATOMS OF THE CHAIN SELECTED FROM THE GROUP CONSISTING OF A HYDRPGEN BEARING CARBON ATOM AND AN UNSATURATED CARBON ATOM.
Claim 2
Dependent Claim
123 words
IN A PROCESS FOR THE ELECTROCHEMICAL FLUORINATION OF AN ORGANIC ACID HALIDE STARTING COMPOUND UTILIZING ANHYDROUS LIQUID HYDROGEN FLUORIDE, THE IMPROVEMENT WHICH COMPRISES INTRODUCING INTO THE ELECTROCHEMICAL CELL AS THE STARTING COMPOUND A PARTIALLY CHAIN HALOGEN-SUBSTITUTED ORGANIC ACID HALIDE IN WHICH THE HALOGEN SUBSTITUTION IS ONLY FLUORINE AND HAVING ATTACHED TO THE ACID HALIDE RADICAL AN OPEN CHAIN COMPRISING AT LEAST TWO SKELETAL ATOMS, WHICH SKELETAL ATOMS ARE ONLY CABON AND NOT MORE THAN ONE HETTERO ATOM AND THAT ONE THETERO ATOM SEPARATED FROM THE ACID HALIDE RADICAL BY AT LEAST ONE CARBON ATOM, AND HAVING AT LEAST ONE OF SAID SKELETAL CARBON ATOMS OF THE CHAIN SELECTED FROM THE GROUP CONSISTING OF A HYDRPGEN BEARING CARBON ATOM AND AN UNSATURATED CARBON ATOM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |