US2833656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for treating perishable agricultural products
Assignee: FMC Corp
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Filing: 1953-06-02
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Granted: 1958-05-06
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Expires: 1973-06-02
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Kalmar
- 👤 Hugh F Fitzpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:39
CPC Classifications
A; A23; A23B; A23B7/00; A23B7/14; A23B7/153; A23B7/154; A23B7/157
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A METHOD OF TREATING PERISHABLE AGRICULTURAL PRODUCTS WHICH COMPRISES, CONTACTING SAID PRODUCTS WITH AN AQUEOUS SOLUTION CONTAINING AT LEAST 0.02% BY WEIGHT OF A WATER SOLUBLE SALT OF ORTHOPHENYLPHENOL, AT LEAST 0.5% BY WEIGHT OF HEXAMETHYLENETETRAMINE, AND ALSO CONTAINING AN ALKALINE SUBSTANCE IN SUFFICIENT CONCENTRATION TO MAINTAIN THE PH OF SAID SOLUTION ABOVE A VALVE OF 11 TO DEPRESS HYDROLYSIS OF SAID SALT.
Claim 2
Independent Claim
63 words
A METHOD OF TREATING PERISHABLE AGRICULTURAL PRODUCTS WHICH COMPRISES, CONTACTING SAID PRODUCTS WITH AN AQUEOUS SOLUTION CONTAINING AT LEAST 0.02% BY WEIGHT OF A WATER SOLUBLE SALT OF ORTHOPHENYLPHENOL, AT LEAST 0.5% BY WEIGHT OF HEXAMETHYLENETETRAMINE, AND ALSO CONTAINING AN ALKALINE SUBSTANCE IN SUFFICIENT CONCENTRATION TO MAINTAIN THE PH OF SAID SOLUTION ABOVE A VALVE OF 11 TO DEPRESS HYDROLYSIS OF SAID SALT.
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) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |