Patent US2570925A successfully refreshed from Google Patents.
US2570925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of catalytic dehydrofluorination
Assignee: Phillips Petroleum Co
•
Filing: 1949-01-04
•
Granted: 1951-10-09
•
Expires: 1969-01-04
Abstract
No abstract record available.
Inventors
- 👤 Jack F Eberle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:42
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C9/00; C07C9/14; C07C9/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR TREATING AN ORGANIC MATERIAL TO REMOVE ORGANICALLY COMBINED FLUORINE THEREFROM, WHICH COMPRISES SUBJECTING AN ORGANIC MATERIAL CONTAINING ORGANICALLY COMBINED FLUORINE TO THE ACTION OF A DEFLUORINATING CATALYST COMPRISING AT LEAST ONE METAL BETWEEN MAGNESIUM AND SILVER, BOTH INCLUSIVE, IN THE ELECTROMOTIVE FORCE SERIES ADMIXED WITH A MATERIAL OBTAINED BY CALCINING A MIXTURE OF A STRONG INORGANIC ACID HAVING A RELATIVELY NON-VOLATILE ANHYDRIDE AND THE REACTION PRODUCT OF SAID METAL WITH SAID ACID, WHICH CATALYST IS ACTIVE UNDER THE CONDITIONS OF TREATMENT IN EFFECTING DECOMPOSITION OF ORGANIC FLUORINE COMPOUNDS.
Claim 2
Dependent Claim
91 words
A PROCESS FOR TREATING AN ORGANIC MATERIAL TO REMOVE ORGANICALLY COMBINED FLUORINE THEREFROM, WHICH COMPRISES SUBJECTING AN ORGANIC MATERIAL CONTAINING ORGANICALLY COMBINED FLUORINE TO THE ACTION OF A DEFLUORINATING CATALYST COMPRISING AT LEAST ONE METAL BETWEEN MAGNESIUM AND SILVER, BOTH INCLUSIVE, IN THE ELECTROMOTIVE FORCE SERIES ADMIXED WITH A MATERIAL OBTAINED BY CALCINING A MIXTURE OF A STRONG INORGANIC ACID HAVING A RELATIVELY NON-VOLATILE ANHYDRIDE AND THE REACTION PRODUCT OF SAID METAL WITH SAID ACID, WHICH CATALYST IS ACTIVE UNDER THE CONDITIONS OF TREATMENT IN EFFECTING DECOMPOSITION OF ORGANIC FLUORINE COMPOUNDS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |