Patent US2641579A successfully refreshed from Google Patents.
US2641579A
Expired / Lapsed
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Azeotropic refrigerant composition of monochlorodifluoromethane and chloropentafluoroethane
Assignee: EIDP Inc
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Filing: 1951-03-02
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Granted: 1953-06-09
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Expires: 1971-03-02
Abstract
No abstract record available.
Inventors
- 👤 Benning Anthony Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:06
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A LOW-BOILING REFRIGERANT COMPOSITION WHICH CONSISTS OF A MIXTURE OF MONOCHLORODIFLUOROMETHANE AND CHLOROPENTAFLUOROETHANE IN WHICH THE MOL PERCENT OF MONOCHLORODIFFUROMETHANE IS 63.
Claim 2
Dependent Claim
22 words
A LOW-BOILING REFRIGERANT COMPOSITION WHICH CONSISTS OF A MIXTURE OF MONOCHLORODIFLUOROMETHANE AND CHLOROPENTAFLUOROETHANE IN WHICH THE MOL PERCENT OF MONOCHLORODIFFUROMETHANE IS 63.
References Cited (Backward Citations)
US2479259A
Cited
US2511993A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-08 | 1956-12-08 | 1957-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-08 | 1960-12-08 | 1961-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-08 | 1964-12-08 | 1965-06-09 | $7700.00 | Window Closed / Lapsed |