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Patent US4657768A successfully refreshed from Google Patents.
US4657768A
Expired / Lapsed
US
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Freezing method for perishable foods
Assignee: Individual
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Filing: 1985-10-02
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Granted: 1987-04-14
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Expires: 2005-10-02
Abstract
Abstract A method of freezing perishable foods including the steps of causing one surface of a heat conducting container to contact cooled brine or a liquified gas of a low-boiling point, and keeping an object to be frozen in contact with the other surface of the heat conducting container. Thus, the freezing of the food proceeds only from the surface contacting the heat conducting container.
Inventors
- 👤 Kazunori Nagoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:14
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/80; A23B2/805; A23B2/8055
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
106 words
A method for freezing perishable food articles comprising the steps of causing one surface of each of a heat conducting means having an open end to contact with a cooled brine or a liquified gas of a low boiling point which is contained within an open tank, and keeping a food article to be frozen in contact with the one surface of the heat conducting means, thereby causing said food article to be frozen only from the surface of the food article contacting said one surface of said heat conducting means whereby the formation of ice crystals in the interior of the food article is avoided.
Claim 2
Independent Claim
106 words
A method for freezing perishable food articles comprising the steps of causing one surface of each of a heat conducting means having an open end to contact with a cooled brine or a liquified gas of a low boiling point which is contained within an open tank, and keeping a food article to be frozen in contact with the one surface of the heat conducting means, thereby causing said food article to be frozen only from the surface of the food article contacting said one surface of said heat conducting means whereby the formation of ice crystals in the interior of the food article is avoided.
Claim 3
Dependent Claim
36 words
A method for freezing perishable food articles as claimed in claim 1, wherein said heat conducting means is a shallow, plate-like metallic container, said metallic container floating on the surface of said brine or liquified gas.
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) | 1990-04-13 | 1990-10-13 | 1991-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-13 | 1994-10-13 | 1995-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-13 | 1998-10-13 | 1999-04-14 | $7700.00 | Window Closed / Lapsed |