US5417276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particulate heating/cooling agents
Assignee: Individual
•
Filing: 1994-01-27
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Granted: 1995-05-23
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Expires: 2014-01-27
Abstract
Abstract This invention discloses novel compositions of matter, in particulate forms, which function as heat transfer agents for heating or cooling applications. The particulates comprise solid carriers containing microwave responsive substances which are liquid at a predetermined elevated operating temperature. These particulate agents, preheated by microwave energy, serve as sources of dry heat or moist heat, depending on their composition. They also serve as sources of cold, when prechilled in a freezer.
Inventors
- 👤 Reuven Dobry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:25
CPC Classifications
F; F28; F28F; F28F13/00; F28F13/003; F28D; F28D20/00; F28D20/02; F28D20/023; Y; Y02; Y02E; Y02E60/00; Y02E60/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
73 words
Particulate heating/cooling agents comprising: a) a carrier material which is solid, and b) a substance, retained by said carrier material, which is microwave responsive and liquid at a predetermined elevated operating temperature, said substance including a plurality of components, including water, which is a source of reversible moisture, and a relatively non-volatile, hydrophilic and hygroscopic component, selected from the group consisting of polyhydric compounds, polymers of polyhydric compounds and chemical derivatives of either.
Claim 2
Dependent Claim
73 words
Particulate heating/cooling agents comprising: a) a carrier material which is solid, and b) a substance, retained by said carrier material, which is microwave responsive and liquid at a predetermined elevated operating temperature, said substance including a plurality of components, including water, which is a source of reversible moisture, and a relatively non-volatile, hydrophilic and hygroscopic component, selected from the group consisting of polyhydric compounds, polymers of polyhydric compounds and chemical derivatives of either.
Claim 3
Dependent Claim
22 words
The particulate heating/cooling agents of claim 1, wherein said moisture is released by microwave heating and replenished from ambient sources upon cooldown.
Claim 4
Dependent Claim
14 words
The particulate heating/cooling agents of claim 2 wherein said ambient sources include humid air.
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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) | 1998-05-22 | 1998-11-21 | 1999-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-05-22 | 2002-11-21 | 2003-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-05-22 | 2006-11-21 | 2007-05-23 | $7700.00 | Window Closed / Lapsed |