US3214928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for freezing food products
Assignee: Individual
•
Filing: 1963-03-22
•
Granted: 1965-11-02
•
Expires: 1983-03-22
Abstract
No abstract record available.
Inventors
- 👤 Oberdorfer Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:37
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/80; A23B2/85; A23B2/88; F; F25; F25D; F25D3/00; F25D3/12; F25D3/127; Y; Y10; Y10S; Y10S131/00; Y10S131/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
THE METHOD OF QUICK FREEZING FOOD PRODUCTS COMPRISING THE STEPS OF CONVEYING FOOD PRODUCTS TO BE FROZEN ALONG A PATH EXTENDING THROUGH A THERMALLY INSULATED CHAMBER, DISCHARGING A SPRAY OF CYROGENIC FLUID IN LIQUID DROPLET FORM INTO SAID CHAMBER TO CONTACT THE FOOD PRODUCTS AS SAID PRODUCTS ARE CONVEYED PAST A FIRST LOCATION ON SAID PATH, AND DISCHARGING A SHOWER OF CARBON DIOXIDE IN THE FORM OF SNOW INTO SAID CHAMBER TO FALL UPON SAID
Claim 2
Independent Claim
75 words
THE METHOD OF QUICK FREEZING FOOD PRODUCTS COMPRISING THE STEPS OF CONVEYING FOOD PRODUCTS TO BE FROZEN ALONG A PATH EXTENDING THROUGH A THERMALLY INSULATED CHAMBER, DISCHARGING A SPRAY OF CYROGENIC FLUID IN LIQUID DROPLET FORM INTO SAID CHAMBER TO CONTACT THE FOOD PRODUCTS AS SAID PRODUCTS ARE CONVEYED PAST A FIRST LOCATION ON SAID PATH, AND DISCHARGING A SHOWER OF CARBON DIOXIDE IN THE FORM OF SNOW INTO SAID CHAMBER TO FALL UPON SAID
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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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |