US2875071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preservation of color in green vegetables
Assignee: Patent Protection Corp
•
Filing: 1955-05-18
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Granted: 1959-02-24
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Expires: 1975-05-18
Abstract
No abstract record available.
Inventors
- 👤 George J Malecki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:31
CPC Classifications
C; C09; C09D; C09D7/00; A; A23; A23B; A23B7/00; A23B7/14; A23B7/153; A23B7/154; A23B7/157
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
THE METHOD OF PRESERVING COLOR IN CANNED GREEN VEGETABLES WHICH CONSISTS IN PLACING THE VEGETABLES IN AN ALKALINE CANNING SOLUTION AND ADDING TO A PORTION OF THE INTERIOR SURFACE OF THE CAN A COATING CONSISTING IN PART OF AN INNOCUOUS ALKALINE COMPOUND WHICH IS SOLUBLE IN THE CANNING SOLUTION, SAID COATING AND COMPOUND BEING OF SUCH CHARATER THAT THE ALKALINE COMPOUND WILL PROGRESSIVELY DISSOLVE IN THE CANNING SOLUTION OVER A PROLONGED PERIOD OF TIME TO MAINTAIN THE PH OF THE SOLUTION AT A SUBSTANTIALLY UNCHANGED VALUE FOR THE PROLONGED PERIOD OF TIME.
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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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |