Patent US3885403A successfully refreshed from Google Patents.
US3885403A
Expired / Lapsed
US
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Device for use as a hot and cold compress
Assignee: Nortech Lab Inc
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Filing: 1973-08-16
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Granted: 1975-05-27
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Expires: 1993-08-16
Abstract
Abstract A device for use as a hot and cold compress comprises a tough flexible envelope of plastic material within which is a gel which maintains a gel-like consistency over a wide temperature range.
Inventors
- 👤 Jacob J Spencer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:53
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/02; F; F25; F25D; F25D3/00; A61F2007/0203; A61F2007/0215; A61F2007/0219; A61F13/00; A61F2013/00089; A61F2013/00187; F25D2303/00; F25D2303/08; F25D2303/082; F25D2303/085; F28; F28D; F28D20/00; F28D2020/0004; F28D2020/0008
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
82 words
A HOT AND COLD COMPRESS COMPRISING A TOUGH, FLEXIBLE, SEALED ENVELOPE AND A NEUTRAL GEL WITHIN SAID ENVELOPE, SAID GEL BEING COMPRISED OF A MIXTURE OF WATER, A FREEZING POINT DEPRESSANT SELECTED FROM THE GROUP CONSISTING OF GLYCERINE, PROPYLENE GLYCOL AND MIXTURES THEREOF AND A THICKENING AGENT THE RELATIVE PROPORTIONS OF THE WATER TO THE FREEZING POINT DEPRESSANT BY WEIGHT BEING ABOUT 1:1 TO ABOUT 7:3, SAID GEL MAINTAINING ITS GEL-LIKE CONSISTENCY OVER A TEMPERATURE RANGE OF ABOUT 0* TO ABOUT 212*F.
Claim 2
Dependent Claim
82 words
A HOT AND COLD COMPRESS COMPRISING A TOUGH, FLEXIBLE, SEALED ENVELOPE AND A NEUTRAL GEL WITHIN SAID ENVELOPE, SAID GEL BEING COMPRISED OF A MIXTURE OF WATER, A FREEZING POINT DEPRESSANT SELECTED FROM THE GROUP CONSISTING OF GLYCERINE, PROPYLENE GLYCOL AND MIXTURES THEREOF AND A THICKENING AGENT THE RELATIVE PROPORTIONS OF THE WATER TO THE FREEZING POINT DEPRESSANT BY WEIGHT BEING ABOUT 1:1 TO ABOUT 7:3, SAID GEL MAINTAINING ITS GEL-LIKE CONSISTENCY OVER A TEMPERATURE RANGE OF ABOUT 0* TO ABOUT 212*F.
Claim 3
Dependent Claim
14 words
A compress according to claim 1, in which the gel further comprises a fungistat.
Claim 4
Dependent Claim
13 words
A compress according to claim 2, in which the fungistat comprises methyl paraben.
Claim 5
Dependent Claim
21 words
A compress according to claim 1, in which the thickening agent is acidic and the gel further comprises a neutralizing agent.
Claim 6
Dependent Claim
15 words
A compress according to claim 4, in which the thickening agent comprises carboxy vinyl polymer.
Claim 7
Dependent Claim
14 words
A compress according to claim 5, in which the neutralizing agent comprises sodium hydroxide.
Claim 8
Dependent Claim
14 words
A compress according to claim 4, in which the gel further comprisEs a fungistat.
Claim 9
Dependent Claim
13 words
A compress according to claim 5, in which the fungistat comprises methyl paraben.
Claim 10
Dependent Claim
15 words
A compress according to claim 8, in which the thickening agent comprises carboxy vinyl polymer.
Claim 11
Dependent Claim
33 words
A compress according to claim 9, in which the weight proportion of the polymer based on the total weight of the water and the freezing point depressant is about 1 to about 4%.
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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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |