US2800456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant and process for making same
Assignee: Individual
•
Filing: 1953-08-10
•
Granted: 1957-07-23
•
Expires: 1973-08-10
Abstract
No abstract record available.
Inventors
- 👤 John C Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:15
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/06; C09K5/066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A REFRIGERANT THAT WILL NOT RUN AFTER THAWING, CONSISTING ESSENTIALLY OF WATER ICE DIVIDED INTO A PLURALITY OF PIECES SMALLER THAN TWO-INCH CUBES, EACH OF WHICH IS COATED WITH DRY ADSORBENT MATERIAL, CHOSEN FROM THE GROUP CONSISTING OF PREGLATINIZED STARCH, FINE BENTONITE AND SODIUM CARBOXMETHYLCELLULOSE, THAT ACTS WITH COLD WATER TO FORM A JELLY-LIKE COATING IMPERMEABLE TO LIQUID FLOW, THE COATING WEIGHTING BETWEEN ABOUT ONE-HALF AND ONE-TENTH AS MUCH AS THE ICE.
Claim 2
Dependent Claim
72 words
A REFRIGERANT THAT WILL NOT RUN AFTER THAWING, CONSISTING ESSENTIALLY OF WATER ICE DIVIDED INTO A PLURALITY OF PIECES SMALLER THAN TWO-INCH CUBES, EACH OF WHICH IS COATED WITH DRY ADSORBENT MATERIAL, CHOSEN FROM THE GROUP CONSISTING OF PREGLATINIZED STARCH, FINE BENTONITE AND SODIUM CARBOXMETHYLCELLULOSE, THAT ACTS WITH COLD WATER TO FORM A JELLY-LIKE COATING IMPERMEABLE TO LIQUID FLOW, THE COATING WEIGHTING BETWEEN ABOUT ONE-HALF AND ONE-TENTH AS MUCH AS THE ICE.
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) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |