US4198313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propellant compositions for aerosols
Assignee: Montedison SpA
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Filing: 1977-12-13
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Granted: 1980-04-15
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Expires: 1997-12-13
Abstract
Abstract The present invention concerns new propellant compositions for aerosols. More particularly, the propellant compositions of this invention consist of a mixture of one or more propelling hydrocarbon substances selected from the group consisting of propane, n-butane, isobutane, pentane and isopentanes with one or more halogenated organic compounds selected from the group consisting of CBrF3, CBrClF2 and CBrF2-CBrF2.
Inventors
- 👤 Gianangelo Bargigia
- 👤 Gerardo Caporiccio
- 👤 Giuliano Carniselli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:58
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
Propellant compositions consisting of a mixture of (a) from 20 to 40% by weight of one or more propelling hydrocarbon substances selected from the group consisting of propane, n-butane, isobutane, pentane and isopentane; (b) from 10 to 25% by weight of a halogenated organic compound consisting of CBrF 3 ; and (c) from 40 to 70% by weight of a fluorinated or chlorofluorinated propelling substance selected from the group consisting of CH 3 --CHF 2 , CF 3 --CH 2 Cl and CH 3 --CClF 2 .
Claim 2
Dependent Claim
87 words
Propellant compositions consisting of a mixture of (a) from 20 to 40% by weight of one or more propelling hydrocarbon substances selected from the group consisting of propane, n-butane, isobutane, pentane and isopentane; (b) from 10 to 25% by weight of a halogenated organic compound consisting of CBrF 3 ; and (c) from 40 to 70% by weight of a fluorinated or chlorofluorinated propelling substance selected from the group consisting of CH 3 --CHF 2 , CF 3 --CH 2 Cl and CH 3 --CClF 2 .
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) | 1983-04-15 | 1983-10-15 | 1984-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-15 | 1987-10-15 | 1988-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-15 | 1991-10-15 | 1992-04-15 | $7700.00 | Window Closed / Lapsed |