Patent US4551990A successfully refreshed from Google Patents.
Patent US2494064A successfully refreshed from Google Patents.
US2494064A
Expired / Lapsed
US
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Thermal hydrogenolysis of fluorocarbons to produce fluorocarbon hydrides
Assignee: 3M Co
•
Filing: 1947-03-31
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Granted: 1950-01-10
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Expires: 1967-03-31
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Simons
- 👤 Wilbur H Pearlson
- 👤 William R James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:49
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/361; C07C17/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A METHOD OF MAKING A FLUOROCARBON MONOHYDRIDE WHICH COMPRISES PASSING A GASEOUS MIXTURE OF HYDROGEN AND A POLYCARBON FLUROCARBON, HAVING THE FORMULA CNF2N+2, THROUGH A HEATED TUBE MAINTAINED AT A TEMPERATURE OF THE ORDER OF 800-900*C., SO AS TO EFFECT HYDROGENOLYSIS AND PRODUCE A REACTION PRODUCT HAVING THE FORMULA CNF2N+1H.
Claim 2
Independent Claim
50 words
A METHOD OF MAKING A FLUOROCARBON MONOHYDRIDE WHICH COMPRISES PASSING A GASEOUS MIXTURE OF HYDROGEN AND A POLYCARBON FLUROCARBON, HAVING THE FORMULA CNF2N+2, THROUGH A HEATED TUBE MAINTAINED AT A TEMPERATURE OF THE ORDER OF 800-900*C., SO AS TO EFFECT HYDROGENOLYSIS AND PRODUCE A REACTION PRODUCT HAVING THE FORMULA CNF2N+1H.
References Cited (Backward Citations)
US2427791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-09 | 1953-07-11 | 1954-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-09 | 1957-07-11 | 1958-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-09 | 1961-07-11 | 1962-01-10 | $7700.00 | Window Closed / Lapsed |