Patent US2572913A successfully refreshed from Google Patents.
US2572913A
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Manufacture of fluorochloromethanes
Assignee: Honeywell International Inc
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Filing: 1949-04-21
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Granted: 1951-10-30
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Expires: 1969-04-21
Abstract
No abstract record available.
Inventors
- 👤 John D Calfee
- 👤 Lee B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:35
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/361; C07C17/093; C07C17/20; C07C17/202; C07C17/204
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
IN THE PROCESS OF PYROLYZING A MIXTURE OF A 1,1-DIFLUOROETHANE AND CHLORINE TO FORM A REACTION PRODUCT COMPRISING CC12F2, CC13F AND CC14,
Claim 2
Dependent Claim
22 words
IN THE PROCESS OF PYROLYZING A MIXTURE OF A 1,1-DIFLUOROETHANE AND CHLORINE TO FORM A REACTION PRODUCT COMPRISING CC12F2, CC13F AND CC14,
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) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |