US3823089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat storage composition
Assignee: Individual
•
Filing: 1971-08-02
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Granted: 1974-07-09
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Expires: 1991-08-02
Abstract
Abstract A HEAT STORAGE COMPOSITION CAPABLE OF RELEASING HEAT OF SOLIDIFICATION DURING COOLING SO AS TO GIVE A PLATEAU IN THE COOLING CURVE, AND HAVING EXCELLENT PHYSICAL PROPERTIES INCLUDING STABILITY AGAINST SETTLING DURING REPEATED HEATINGCOOLING CYCLES, GOOD HEAT-TRANSFER CHARACTERISTICS, AND RELATIVELY HIGH LATENT HEAT, COMPRISING A MIXTURE OF ALUMINUM FLAKE POWDER AND PARAFFIN IN THE RELATIVE PROPORTIONS OF FROM ABOUT 20% TO 50% BY WEIGHT OF ALUMINUM FLAKE POWDER AND FROM ABOUT 80% TO ABOUT 50% BY WEIGHT OF PARAFFIN.
Inventors
- 👤 W Shapero
- 👤 J Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:34
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/06; A; A47; A47G; A47G19/00; A47G19/22; A47G19/2288; A47G23/00; A47G23/04; A47J; A47J41/00; A47J41/0038; A47J41/0044; C09K5/08; C09K5/10; C09K5/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |