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Patent US2979463A successfully refreshed from Google Patents.
US2979463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant composition
Assignee: Individual
•
Filing: 1956-03-21
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Granted: 1961-04-11
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Expires: 1976-03-21
Abstract
No abstract record available.
Inventors
- 👤 Carl S Ferguson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:41
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/06; C09K5/066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A COMPOSITION IN THE FORM OF A GEL ADAPTED TO BE FROZEN FOR USE AS A REFRIGERANT, SAID COMPOSITION CONSISTING ESSENTIALLY OF A QUANTITY OF WATER, TEMPERATURE DEPRESSANTS AND A HEAT INSULATING INGREDIENT, SAID TEMPERATURE DEPRESSANTS HAVING A COMBINED DRY WEIGHT OF FROM 1/25 TO 1/2 OF THAT OF THE WATER, SAID TEMPERATURE DEPRESSANTS CONSISTING OF AMMONIUM CHLORIDE, A QUANTITY OF UREA FROM TWO TO FOUR TIMES AS MUCH BY WEIGHT AS THE AMMONIUM CHLORIDE, AND A QUANTITY OF POTASSIUM CHLORIDE FROM ONE-THIRD TO FOUR TIMES AS MUCH BY WEIGHT AS THE COMBINED WEIGHTS OF SAID AMMONIUM CHLORIDE AND UREA, SAID HEAT INSULATING INGREDIENT BEING SELECTED FROM THE GROUP CONSISTING OF PLASTER OF PARIS AND ASBESTOS IN AN AMOUNT NOT GREATER THAN 1/8 OF THE DRY WEIGHT OF THE TEMPERATURE DEPRESSANTS, AND FROM 2 OUNCES TO 24 OUNCES OF LOCUST BEAN GUM PER GALLON OF WATER.
Claim 2
Dependent Claim
146 words
A COMPOSITION IN THE FORM OF A GEL ADAPTED TO BE FROZEN FOR USE AS A REFRIGERANT, SAID COMPOSITION CONSISTING ESSENTIALLY OF A QUANTITY OF WATER, TEMPERATURE DEPRESSANTS AND A HEAT INSULATING INGREDIENT, SAID TEMPERATURE DEPRESSANTS HAVING A COMBINED DRY WEIGHT OF FROM 1/25 TO 1/2 OF THAT OF THE WATER, SAID TEMPERATURE DEPRESSANTS CONSISTING OF AMMONIUM CHLORIDE, A QUANTITY OF UREA FROM TWO TO FOUR TIMES AS MUCH BY WEIGHT AS THE AMMONIUM CHLORIDE, AND A QUANTITY OF POTASSIUM CHLORIDE FROM ONE-THIRD TO FOUR TIMES AS MUCH BY WEIGHT AS THE COMBINED WEIGHTS OF SAID AMMONIUM CHLORIDE AND UREA, SAID HEAT INSULATING INGREDIENT BEING SELECTED FROM THE GROUP CONSISTING OF PLASTER OF PARIS AND ASBESTOS IN AN AMOUNT NOT GREATER THAN 1/8 OF THE DRY WEIGHT OF THE TEMPERATURE DEPRESSANTS, AND FROM 2 OUNCES TO 24 OUNCES OF LOCUST BEAN GUM PER GALLON OF WATER.
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) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |