Patent US3758257A successfully refreshed from Google Patents.
US3758257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of microorganism populations of food articles by contact with a liquid chlorohydrocarbon
Assignee: EIDP Inc
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Filing: 1970-07-01
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Granted: 1973-09-11
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Expires: 1990-07-01
Abstract
Abstract A continuous process for reducing microorganism populations of articles, especially food, comprising effectively contacting the surfaces of the articles with a liquid, saturated fluorinated chlorohydrocarbon having a normal boiling point of 50* C. to -50* C., collecting liquid chlorohydrocarbon which has contacted the articles, reducing the microorganism population of the collected liquid, and recycling the liquid of reduced microorganism population to the article contacting step.
Inventors
- 👤 K Dastur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:28
CPC Classifications
F; F25; F25D; F25D9/00; F25D9/005; A; A23; A23B; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A23L; A23L5/00; A23L5/20; A23L5/23
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
31 words
The process of claim 1 whErein the step of reducing the microorganism population of the collected liquid is carried out in a zone which is separated from the article contacting zone.
Claim 2
Dependent Claim
38 words
The process of claim 2 wherein the collected liquid is separated into a microorganism-rich fraction and a fraction having a lower microorganism population than the collected liquid and the latter fraction is recycled to the article contacting step.
Claim 3
Dependent Claim
16 words
The process of claim 3 wherein the collected liquid is flotatively separated into the two fractions.
Claim 4
Dependent Claim
38 words
The process of claim 3 wherein the microorganismrich fraction is separated into a microorganism-richer fraction and a fraction having a lower microorganism population than the collected liquid and the latter fraction is recycled to the article contacting step.
Claim 5
Dependent Claim
37 words
The process of claim 3 wherein the microorganism population of the microorganism-rich fraction is reduced to less than that of the collected liquid and the fraction after said reduction is then recycled to the article contacting step.
Claim 6
Dependent Claim
33 words
The process of claim 1 wherein the microorganism population of the collected liquid is reduced by adding propionic acid to the collected liquid in an amount effective to reduce the microorganism population thereof.
Claim 7
Dependent Claim
33 words
The process of claim 7 wherein the liquid and propionic acid are separated after the microorganism population of the liquid is reduced and before the liquid is recycled to the article contacting step.
Claim 8
Dependent Claim
32 words
The process of claim 1 wherein the microorganism population of the collected liquid is reduced by adding chlorine to the collected liquid in an amount effective to reduce the microorganism population thereof.
Claim 9
Dependent Claim
32 words
The process of claim 9 wherein the liquid and chlorine are separated after the microorganism population of the liquid is reduced and before the liquid is recycled to the article contacting step.
Claim 10
Dependent Claim
22 words
The process of claim 1 wherein the microorganism population of the collected liquid is reduced by irradiating the liquid with ultraviolet light.
Claim 11
Dependent Claim
10 words
The process of claim 1 wherein the articles are foods.
Claim 12
Dependent Claim
11 words
The process of claim 14 wherein the fluorinated chlorohydrocarbon is dichlorodifluoromethane.
Claim 13
Dependent Claim
16 words
The process of claim 12 wherein the fluorinated chlorohydrocarbon contacting the food also freezes the food.
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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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |