US5599571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preserving leafy produce
Assignee: Individual
•
Filing: 1992-05-06
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Granted: 1997-02-04
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Expires: 2012-05-06
Abstract
Abstract This invention relates to a process for preserving leafy produce. The process comprises exposing the produce to be treated for a period of time to a dilute aqueous solution of a preservative composition. The preservative composition comprises sodium or calcium hypochlorite, a chloride salt and water.
Inventors
- 👤 Joe J. Estrada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:07
CPC Classifications
A; A23; A23B; A23B7/00; A23B7/14; A23B7/153; A23B7/157
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
53 words
A method for inhibiting wilting and discoloration of leafy produce, said method comprising: exposing the leafy produce to an aqueous solution comprising sodium or calcium hypochlorite at 10 ppm to 100 ppm and potassium or sodium chloride salt at 100 ppm to 500 ppm; and storing the leafy produce at a reduced temperature.
Claim 2
Independent Claim
53 words
A method for inhibiting wilting and discoloration of leafy produce, said method comprising: exposing the leafy produce to an aqueous solution comprising sodium or calcium hypochlorite at 10 ppm to 100 ppm and potassium or sodium chloride salt at 100 ppm to 500 ppm; and storing the leafy produce at a reduced temperature.
Claim 3
Dependent Claim
28 words
A method as in claim 1, wherein the aqueous solution comprises sodium hypochlorite at 25 ppm to 75 ppm and sodium chloride at 200 ppm to 300 ppm.
Claim 4
Dependent Claim
23 words
A method as in claim 1, which further comprises the steps of drying the treated leafy produce after removal from the aqueous solution.
Claim 5
Dependent Claim
23 words
A method as in claim 3, wherein the reduced temperature is in the range of from about 35° F. to about 45° F.
Claim 6
Dependent Claim
16 words
A method as in claim 4, wherein the reduced temperature is about 40° to 42° F.
Claim 7
Dependent Claim
23 words
A method as in claim 1, wherein the produce is maintained at the reduced temperature for at least 10 days prior to use.
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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) | 2000-02-04 | 2000-08-05 | 2001-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-02-04 | 2004-08-05 | 2005-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-02-04 | 2008-08-05 | 2009-02-04 | $7700.00 | Window Closed / Lapsed |