Patent US3218263A successfully refreshed from Google Patents.
US3218263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gelled propellent for aerosol dispensers
Assignee: Union Carbide Corp
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Filing: 1961-07-19
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Granted: 1965-11-16
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Expires: 1981-07-19
Abstract
No abstract record available.
Inventors
- 👤 Francis K Boyle
- 👤 John J Duane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:05
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A GELLED PROPELLENT COMPOSITION CHARGE FOR AEROSOLTYPE DISPENSERS, WHICH COMPOSITION CONSISTS ESSENTIALLY OF: A VAPORIZABLE LIQUID FLUOROCARBON PROPELLENT CHARACTERIZED BY A TROUTON NUMBER NOT EXCEEDING ABOUT 21.0, AND A THICKENING AGENT SELECTED FROM THE GROUP CONSISTING OF A SILICA-CONTAINING INORGANIC GELLING AGENT AND ACTIVATED CARBON, SAID THICKENING AGENT HAVING A PARTICLE SIZE LESS THAN ABOUT 10**3 MICRONS, SAID THICKENING AGENT BEING PRESENT IN THE COMPOSITION IN AN AMOUNT OF AT LEAST 4 WEIGHT PERCENT.
Claim 2
Dependent Claim
74 words
A GELLED PROPELLENT COMPOSITION CHARGE FOR AEROSOLTYPE DISPENSERS, WHICH COMPOSITION CONSISTS ESSENTIALLY OF: A VAPORIZABLE LIQUID FLUOROCARBON PROPELLENT CHARACTERIZED BY A TROUTON NUMBER NOT EXCEEDING ABOUT 21.0, AND A THICKENING AGENT SELECTED FROM THE GROUP CONSISTING OF A SILICA-CONTAINING INORGANIC GELLING AGENT AND ACTIVATED CARBON, SAID THICKENING AGENT HAVING A PARTICLE SIZE LESS THAN ABOUT 10**3 MICRONS, SAID THICKENING AGENT BEING PRESENT IN THE COMPOSITION IN AN AMOUNT OF AT LEAST 4 WEIGHT PERCENT.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |