US2961322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preserving perishable foodstuffs
Assignee: Individual
•
Filing: 1957-02-01
•
Granted: 1960-11-22
•
Expires: 1977-02-01
Abstract
No abstract record available.
Inventors
- 👤 Winterberg Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:08
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/24; A; A23; A23B; A23B4/00; A23B4/10; A23P; A23P20/00; A23P20/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A METHOD FOR PRESERVING FOOD MATERIALS OF THE TYPE THAT SHOULD BE ALLOWED TO BREATHE AND RIPEN IN THEIR CONTAINER WHICH COMPRISES COATING A MASS OF SAID FOOD MATERIAL WITH A COATING CONTAINING A NON-TOXIC, POLYVINYL ACETATE RESIN AND A HYDROPHILIC WAX, THE RATIO OF SAID RESIN TO SAID WAX BEING FROM ABOUT 41/4 UP TO ABOUT 16, DRYING THE COATED MASS UNTIL PORES ARE FORMED IN THE COATING TO PERMIT THE COATED FOOD MATERIAL TO BREATHE, AND, SUBSEQUENTLY, AFTER RIPENING THE FOOD, RAISING THE TEMPERATURE OF THE COATING TO FUSE THE WAX AND RENDER THE COATING IMPERVIOUS TO GAS AND MOISTURE.
Claim 2
Independent Claim
102 words
A METHOD FOR PRESERVING FOOD MATERIALS OF THE TYPE THAT SHOULD BE ALLOWED TO BREATHE AND RIPEN IN THEIR CONTAINER WHICH COMPRISES COATING A MASS OF SAID FOOD MATERIAL WITH A COATING CONTAINING A NON-TOXIC, POLYVINYL ACETATE RESIN AND A HYDROPHILIC WAX, THE RATIO OF SAID RESIN TO SAID WAX BEING FROM ABOUT 41/4 UP TO ABOUT 16, DRYING THE COATED MASS UNTIL PORES ARE FORMED IN THE COATING TO PERMIT THE COATED FOOD MATERIAL TO BREATHE, AND, SUBSEQUENTLY, AFTER RIPENING THE FOOD, RAISING THE TEMPERATURE OF THE COATING TO FUSE THE WAX AND RENDER THE COATING IMPERVIOUS TO GAS AND MOISTURE.
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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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |