Patent US4021585A successfully refreshed from Google Patents.
US4021585A
Expired / Lapsed
US
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Chlorine dioxide spray process for chilling meat carcasses
Assignee: Krey Packing Co
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Filing: 1976-01-16
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Granted: 1977-05-03
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Expires: 1996-01-16
Abstract
Abstract In chilling freshly slaughtered hog carcasses the bleaching effect of a bactericidal spray is eliminated by the use of chlorine dioxide in a concentration sufficient to inhibit the protein synthesis mechanism of bacteria. The concentration required for this purpose, which may be in the range of 5 to 25 parts per million (ppm), is so small that it produces very little if any oxidation; hence the characteristic bleaching effect of chlorine dioxide is avoided. The skin color of carcasses so sprayed is unaffected by the process.
Inventors
- 👤 Donald J. Svoboda
- 👤 Loretta E. Schwerdt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:53
CPC Classifications
A; A23; A23B; A23B4/00; A23B4/14; A23B4/18; A23B4/24; A23B4/06; A23B4/08; A23B4/16
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
As a non-bleaching use of chlorine dioxide, the method of chilling freshly slaughtered hog carcasses while maintaining an anti-bacterial spray without bleaching the carcass surface skin, which comprises: A. forming a spray solution of water containing chlorine dioxide gas in a concentration i. effective to prevent the protein synthesis mechanism of bacteria encountered on the hog carcass skin surface, but ii. ineffective to bleach the skin pigment; and B. conveying said hog carcasses to a chilling room and chilling said hog carcasses; C. intermittently spraying such solution onto said hog carcasses during the period of their chilling for a period long enough to prevent the protein synthesis mechanism, but not long enough to bleach.
Claim 2
Dependent Claim
114 words
As a non-bleaching use of chlorine dioxide, the method of chilling freshly slaughtered hog carcasses while maintaining an anti-bacterial spray without bleaching the carcass surface skin, which comprises: A. forming a spray solution of water containing chlorine dioxide gas in a concentration i. effective to prevent the protein synthesis mechanism of bacteria encountered on the hog carcass skin surface, but ii. ineffective to bleach the skin pigment; and B. conveying said hog carcasses to a chilling room and chilling said hog carcasses; C. intermittently spraying such solution onto said hog carcasses during the period of their chilling for a period long enough to prevent the protein synthesis mechanism, but not long enough to bleach.
Claim 3
Dependent Claim
24 words
The method defined in claim 1, wherein the concentration of chlorine dioxide gas in the water solution is less than 50 parts per million.
Claim 4
Dependent Claim
29 words
The method defined in claim 1, wherein the concentration of chlorine dioxide gas in the water solution is in the range of substantially 5 to 25 parts per million.
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) | 1980-05-02 | 1980-11-01 | 1981-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-02 | 1984-11-01 | 1985-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-02 | 1988-11-01 | 1989-05-03 | $7700.00 | Window Closed / Lapsed |