US4447304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of carbonyl fluoride
Assignee: National Research Council Canada
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Filing: 1982-02-22
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Granted: 1984-05-08
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Expires: 2002-02-22
Abstract
Abstract A method of producing carbonyl fluoride by multiphoton decomposition of carbon dioxide-sulphur hexafluoride mixtures comprising irradiating gaseous carbon dioxide-sulphur hexafluoride mixtures in a reaction chamber at a pressure in the 10-50 Torr range with a laser beam at a frequency of about 944 wavenumbers and passing the material from the reaction chamber after irradiation through a chemical processing stage to obtain a carbonyl fluoride product.
Inventors
- 👤 Vincenzo Malatesta
- 👤 Clive Willis
- 👤 Peter A. Hackett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:58
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/121; C; C01; C01B; C01B32/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
75 words
A method of producing carbonyl fluoride by multiphoton decomposition of carbon dioxide-sulphur hexafluoride mixtures comprising: (a) irradiating gaseous carbon dioxide-sulphur hexafluoride mixtures in a reaction chamber at a pressure in the 10-50 Torr range with a laser beam at a frequency of about 944 wavenumbers causing the following reaction to take place: ##STR3## and (b) passing the material from the reaction chamber after irradiation through a chemical processing stage to obtain a carbonyl fluoride product.
Claim 2
Independent Claim
75 words
A method of producing carbonyl fluoride by multiphoton decomposition of carbon dioxide-sulphur hexafluoride mixtures comprising: (a) irradiating gaseous carbon dioxide-sulphur hexafluoride mixtures in a reaction chamber at a pressure in the 10-50 Torr range with a laser beam at a frequency of about 944 wavenumbers causing the following reaction to take place: ##STR3## and (b) passing the material from the reaction chamber after irradiation through a chemical processing stage to obtain a carbonyl fluoride product.
Claim 3
Dependent Claim
26 words
A method as in claim 1 wherein the irradiation is carried out by a CO 2 laser focussed on the central region of the reaction chamber.
References Cited (Backward Citations)
US4000051A
Cited
US4311674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-08 | 1987-11-07 | 1988-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-08 | 1991-11-07 | 1992-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-08 | 1995-11-07 | 1996-05-08 | $7700.00 | Window Closed / Lapsed |