US4189394A
Expired / Lapsed
US
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Heat storage material comprising calcium chloride-hexahydrate and a nucleating agent
Assignee: US Philips Corp
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Filing: 1978-07-10
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Granted: 1980-02-19
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Expires: 1998-07-10
Abstract
Abstract The utility of calcium chloride-hexahydrate as a heat storage material is improved when barium carbonate, strontium carbonate, barium fluoride, barium fluoride-hydrofluoride and/or strontium fluoride is used as a nucleating agent to prevent supercooling.
Inventors
- 👤 Johann Schroder
- 👤 Klaus Gawron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:55
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/06; C09K5/063
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
27 words
A heat storage material comprising calcium chloride-hexahydrate as the storage medium and barium carbonate, strontium carbonate, barium fluoride, barium fluoride-hydrofluoride and/or strontium fluoride as a nucleating agent.
Claim 2
Dependent Claim
27 words
A heat storage material comprising calcium chloride-hexahydrate as the storage medium and barium carbonate, strontium carbonate, barium fluoride, barium fluoride-hydrofluoride and/or strontium fluoride as a nucleating agent.
Claim 3
Dependent Claim
31 words
A heat storage material according to claim 1, in which the nucleating agent is present in a quantity of 1·10 -3 to 0.5% by weight, relative to 100 g of water.
Claim 4
Dependent Claim
32 words
A heat storage material according to claim 1, in which the nucleating agent is barium carbonate in a quantity of 2·10 -3 to 0.5% by weight, relative to 100 g of water.
Claim 5
Dependent Claim
32 words
A heat storage material according to claim 1, in which the nucleating agent is strontium carbonate in a quantity of 1·10 -3 to 0.5% by weight, relative to 100 g of water.
Claim 6
Dependent Claim
31 words
A heat storage material according to claim 1, in which the nucleating agent is barium fluoride in a quantity of 0.15 to 0.5% by weight, relative to 100 g of water.
Claim 7
Dependent Claim
32 words
A heat storage material according to claim 1, in which the nucleating agent is strontium fluoride in a quantity of 1.2·10 -2 to 0.5% by weight, relative to 100 g of water.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-02-18 | 1983-08-20 | 1984-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-18 | 1987-08-20 | 1988-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-18 | 1991-08-20 | 1992-02-19 | $7700.00 | Window Closed / Lapsed |