US2987438A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Analgesic compositions and method
Assignee: Wyeth LLC
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Filing: 1956-02-27
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Granted: 1961-06-06
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Expires: 1976-02-27
Abstract
No abstract record available.
Inventors
- 👤 David M Ashkenaz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:22
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A METHOD OF CAUSING INTERMITTENT RHYTHMIC CHILLING ACTION ON SELECTED AREAS OF THE SKIN COMPRISING INTERMITTENT SPRAYING OF SAID AREAS WITH A CONTINUOUS STREAM OF LIQUID APPROXIMATELY 0.005 TO 0.01 INCH IN DIAMETER OF A COMPOSITION COMPRISING NON-TOXIC, NON-INFLAMMABLE FLUORINATED HALO-HYDROCARBONS HAVING NOT MORE THAN TWO CARBON ATOMS, SAID MIXTURE HAVING A V2L IN THE RANGE OF ABOUT 85 TO 155, V BEING THE VAPOR PRESSURE AT 70*F. EXPRESSED IN KILOGRAMS PER SQUARE CENTIMETER, AND L BEING THE LATENT HEAT OF VAPORIZATION AT 70*F. EXPRESSED IN GRAM CALORIES PER GRAM.
Claim 2
Independent Claim
90 words
A METHOD OF CAUSING INTERMITTENT RHYTHMIC CHILLING ACTION ON SELECTED AREAS OF THE SKIN COMPRISING INTERMITTENT SPRAYING OF SAID AREAS WITH A CONTINUOUS STREAM OF LIQUID APPROXIMATELY 0.005 TO 0.01 INCH IN DIAMETER OF A COMPOSITION COMPRISING NON-TOXIC, NON-INFLAMMABLE FLUORINATED HALO-HYDROCARBONS HAVING NOT MORE THAN TWO CARBON ATOMS, SAID MIXTURE HAVING A V2L IN THE RANGE OF ABOUT 85 TO 155, V BEING THE VAPOR PRESSURE AT 70*F. EXPRESSED IN KILOGRAMS PER SQUARE CENTIMETER, AND L BEING THE LATENT HEAT OF VAPORIZATION AT 70*F. EXPRESSED IN GRAM CALORIES PER GRAM.
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) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |