US3498070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for quick freezing food products
Assignee: Individual
•
Filing: 1969-06-30
•
Granted: 1970-03-03
•
Expires: 1989-06-30
Abstract
No abstract record available.
Inventors
- 👤 Kenneth M Allen
- 👤 Chester H Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:05
CPC Classifications
F; F25; F25D; F25D3/00; F25D3/10; F25D3/11; A; A23; A23B; A23B2/00; A23B2/80; A23B2/85; A23B2/88; F25D2400/00; F25D2400/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE METHOD OF FREEZING FOOD PRODUCTS COMPRISING DROPPING IN A SUBSTANTIALLY FREE FALLING PATH DISCRETE, SOLID, UNFROZEN, MOIST PARTICLES OF FOOD PRODUCTS INTO A BODY OF A LIQUEFIED CRYOGENIC GAS MAINTAINED IN AN INSULATING ENCLOSURE, FREEZING AT LEAST THE OUTER SURFACES OF THE PARTICLES WHILE IN THE BODY AND REMOVING THE PARTICLES FROM THE BODY.
Claim 2
Independent Claim
55 words
THE METHOD OF FREEZING FOOD PRODUCTS COMPRISING DROPPING IN A SUBSTANTIALLY FREE FALLING PATH DISCRETE, SOLID, UNFROZEN, MOIST PARTICLES OF FOOD PRODUCTS INTO A BODY OF A LIQUEFIED CRYOGENIC GAS MAINTAINED IN AN INSULATING ENCLOSURE, FREEZING AT LEAST THE OUTER SURFACES OF THE PARTICLES WHILE IN THE BODY AND REMOVING THE PARTICLES FROM THE BODY.
References Cited (Backward Citations)
US1933257A
Cited
US2263452A
Cited
US2447249A
Cited
US2484297A
Cited
US2875588A
Cited
US3104977A
Cited
US3022636A
Cited
US3166425A
Cited
US3039276A
Cited
US3114248A
Cited
US3162019A
Cited
US3250630A
Cited
US3294553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |