Patent US4372027A successfully refreshed from Google Patents.
Patent US2522535A successfully refreshed from Google Patents.
US2522535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of fruits and vegetables
Assignee: Wallace & Tiernan Products Cor
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Filing: 1947-03-17
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Granted: 1950-09-19
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Expires: 1967-03-17
Abstract
No abstract record available.
Inventors
- 👤 Pryor Dean Earl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:45
CPC Classifications
A; A23; A23B; A23B7/00; A23B7/14; A23B7/153; A23B7/157
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN THE TREATMENT OF FRESH FRUITS AND VEGETABLES, THE IMPROVEMENT WHICH COMPRISES WASHING THE SURFACES THEREOF IN AN AQUEOUS ACID SOLUTION HAVING ITS PH MAINTAINED IN THE RANGE OF ABOUT 4 TO 6 AND ITS CHLORINE CONCENTRATION MAINTAINED IN THE RANGE OF ABOUT 25 TO 250 PARTS PER MILLION THE CHLORINE BEING PRESENT IN THE SOLUTION SUBSTANTIALLY IN THE FORM OF HYPOCHLOROUS ACID.
Claim 2
Dependent Claim
63 words
IN THE TREATMENT OF FRESH FRUITS AND VEGETABLES, THE IMPROVEMENT WHICH COMPRISES WASHING THE SURFACES THEREOF IN AN AQUEOUS ACID SOLUTION HAVING ITS PH MAINTAINED IN THE RANGE OF ABOUT 4 TO 6 AND ITS CHLORINE CONCENTRATION MAINTAINED IN THE RANGE OF ABOUT 25 TO 250 PARTS PER MILLION THE CHLORINE BEING PRESENT IN THE SOLUTION SUBSTANTIALLY IN THE FORM OF HYPOCHLOROUS ACID.
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) | 1953-09-18 | 1954-03-20 | 1954-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-18 | 1958-03-20 | 1958-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-18 | 1962-03-20 | 1962-09-19 | $7700.00 | Window Closed / Lapsed |