US3014844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-propelling powder dispensing compositions
Assignee: Riker Laboratories Inc
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Filing: 1958-01-03
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Granted: 1961-12-26
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Expires: 1978-01-03
Abstract
No abstract record available.
Inventors
- 👤 Charles G Thiel
- 👤 Ronald D Law
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:05
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/007; A61K9/0073; A61K9/008; A01; A01N; A01N25/00; A01N25/02; A01N25/04; A01N25/06; C; C09; C09K; C09K3/00; C09K3/30; C11; C11D; C11D17/00; C11D17/0043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
A SELF-PROPELLING, POWEDER DISPENSING COMPOSITION CAPABLE OF PRODUCING A USEFUL SUBSTANCE IN AEROSOL FROM COMPRISING BETWEEN ABOUT 0.01% AND 20% BY WEIGHT OF A FINELY-DIVIDED POWDER OF A PARTICLE SIZE LESS THAN ABOUT 100 MICRONS SUSPENDED IN A LIQUEFIED PROPELLANT HAVING A VAPOR PRESSURE OF AT LEAST ABOUT 13 LBS. PER SQUARE INCH GAUGE AT 70*F., AND BETWEEN ABOUT 0.1 AND 20% BY WEIGHT OF A LIQUID, NON-IONIC SURFACE-ACTIVE AGENT HAVING A HYDROPHILE-LIPOPHILE BALANCE RATIO OF LESS THAN ABOUT 10 AND BEING SOLUBLE IN SAID LIQUEFIED PROPELLANT, SAID FINELYDIVIDED POWDER BEING SUBSTANTIALLY INSOLUBLE IN THE MIXTURE OF PROPELLANT AND SURFACE ACTIVE AGENT, AND WHEN SAID FINELY-DIVIDED POWDER IS WATER-SOLUBLE, SAID COMPOSITION SHALL CONTAIN NOT MORE THAN ABOUT 300 PARTS PER MILLION OF MOISTURE.
Claim 2
Dependent Claim
123 words
A SELF-PROPELLING, POWEDER DISPENSING COMPOSITION CAPABLE OF PRODUCING A USEFUL SUBSTANCE IN AEROSOL FROM COMPRISING BETWEEN ABOUT 0.01% AND 20% BY WEIGHT OF A FINELY-DIVIDED POWDER OF A PARTICLE SIZE LESS THAN ABOUT 100 MICRONS SUSPENDED IN A LIQUEFIED PROPELLANT HAVING A VAPOR PRESSURE OF AT LEAST ABOUT 13 LBS. PER SQUARE INCH GAUGE AT 70*F., AND BETWEEN ABOUT 0.1 AND 20% BY WEIGHT OF A LIQUID, NON-IONIC SURFACE-ACTIVE AGENT HAVING A HYDROPHILE-LIPOPHILE BALANCE RATIO OF LESS THAN ABOUT 10 AND BEING SOLUBLE IN SAID LIQUEFIED PROPELLANT, SAID FINELYDIVIDED POWDER BEING SUBSTANTIALLY INSOLUBLE IN THE MIXTURE OF PROPELLANT AND SURFACE ACTIVE AGENT, AND WHEN SAID FINELY-DIVIDED POWDER IS WATER-SOLUBLE, SAID COMPOSITION SHALL CONTAIN NOT MORE THAN ABOUT 300 PARTS PER MILLION OF MOISTURE.
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) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |