US3335014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preservation of foods with nitrous oxide
Assignee: Nitrox SA
•
Filing: 1963-09-16
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Granted: 1967-08-08
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Expires: 1983-09-16
Abstract
No abstract record available.
Inventors
- 👤 Balestra Carlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:47
CPC Classifications
F; F26; F26B; F26B21/00; F26B21/30; F26B21/33; F26B21/331; A; A23; A23B; A23B11/00; A23B11/40; A23B2/00; A23B2/70; A23B2/704; A23B2/708; A23B2/721; A23F; A23F5/00; A23F5/10; A23F5/105; C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B33/2807; C01B33/2861
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A METHOD OF PRESERVING FOOD STUFFS, COMPRISING THE STEPS OF INTRODUCING SAID FOOD STUFF INTO A HERMETICALLY SEALABLE ENCLOSURE SO AS TO FILL SAID ENCLOSURE BUT PARTLY; FILLING THE RESIDUAL SPACE IN SAID ENCLOSURE WITH A PROTECTIVE GAS INCLUDING AN EFFECTIVE AMOUNT OF NITROUS OXIDE AND BEING FREE OF OXYGEN IN EXCESS OF AN AMOUNT EQUAL TO 20% OF THE VOLUME OF SAID NITROUS OXIDE, SAID GAS BEING MAINTAINED IN SAID ENCLOSURE AT AN ABSOLUTE PRESSURE OF UP TO ABOUT 1.1 ATMOSPHERES; AND HERMETICALLY SEALING SAID ENCLOSURE.
Claim 2
Independent Claim
87 words
A METHOD OF PRESERVING FOOD STUFFS, COMPRISING THE STEPS OF INTRODUCING SAID FOOD STUFF INTO A HERMETICALLY SEALABLE ENCLOSURE SO AS TO FILL SAID ENCLOSURE BUT PARTLY; FILLING THE RESIDUAL SPACE IN SAID ENCLOSURE WITH A PROTECTIVE GAS INCLUDING AN EFFECTIVE AMOUNT OF NITROUS OXIDE AND BEING FREE OF OXYGEN IN EXCESS OF AN AMOUNT EQUAL TO 20% OF THE VOLUME OF SAID NITROUS OXIDE, SAID GAS BEING MAINTAINED IN SAID ENCLOSURE AT AN ABSOLUTE PRESSURE OF UP TO ABOUT 1.1 ATMOSPHERES; AND HERMETICALLY SEALING SAID ENCLOSURE.
References Cited (Backward Citations)
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Cited
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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) | 1970-08-07 | 1971-02-06 | 1971-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-07 | 1975-02-06 | 1975-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-07 | 1979-02-06 | 1979-08-08 | $7700.00 | Window Closed / Lapsed |