US4296801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reusable heat devices containing xylitol as the heat-storage material
Assignee: Suomen Sokeri Oy
•
Filing: 1980-05-20
•
Granted: 1981-10-27
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Expires: 2000-05-20
Abstract
Abstract Both heat devices containing a supercooled xylitol and the use of supercooled xylitol as a heat source are disclosed.
Inventors
- 👤 Woldemar Guex
- 👤 Heinrich Klaeui
- 👤 Horst Pauling
- 👤 Felix Voirol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:15
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/06; C09K5/063
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
13 words
A heat device comprising a container having therein xylitol as a heat-storage material.
Claim 2
Dependent Claim
13 words
A heat device comprising a container having therein xylitol as a heat-storage material.
Claim 3
Dependent Claim
14 words
The heat device of claim 1 wherein the xylitol is present as a powder.
Claim 4
Dependent Claim
16 words
The heat device of claim 1 wherein xylitol is in the form of a super-saturated solution.
Claim 5
Dependent Claim
11 words
The heat device of claim 1 wherein the container is flexible.
Claim 6
Dependent Claim
21 words
The heat device of claim 4 wherein the flexible container is made of a plastic material which is compatible with xylitol.
Claim 7
Dependent Claim
28 words
A heat device comprising a flexible container having therein xylitol as a heat storage material, said xylitol either in the form of a melt or a supersaturated solution.
Claim 8
Dependent Claim
28 words
A heat device comprising a flexible container having therein xylitol as a heat storage material, said xylitol either in the form of a melt or a supersaturated solution.
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) | 1984-10-26 | 1985-04-27 | 1985-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-26 | 1989-04-27 | 1989-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-26 | 1993-04-27 | 1993-10-27 | $7700.00 | Window Closed / Lapsed |