Patent US2899320A successfully refreshed from Google Patents.
US2899320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preheater
Assignee: —
•
Filing: —
•
Granted: 1959-08-11
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Expires: 1976-08-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:09
CPC Classifications
A; A23; A23B; A23B11/00; A23B11/10; A23B11/12; A23B11/13; A23B11/133; A23B11/137
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A PROCESS FOR THE STERILIZATION OF MILK WHITE MAINTAINING THE NATURAL CHARACTERISTICS OF THE SAME COMPRISING THE STEPS OF PREWARMING THE MILK TO A TEMPERATURE OF APPROXIMATELY 145*F. TO APPROXIMATELY 165*F., SUBJECTING THE PREWARMED MILK IN THE FORM OF A THIN, DOWNWARDLY FLOWING FILM WITHIN A CLOSED STERILIZING CHAMBER TO DIRECT HEAT EXCHANGE CONTACT WITH STEAM OF A CONTROLLED AND EFFECTIVE TEMPERATURE SUFFICIENT TO RAISE EVERY PARTICLE OF MILK TO A TEMPERATURE OF 300*F. AND NO HIGHER, FORMING AND MAINTAINING A LIQUID SEAL OF THE MILK AT THE BOTTOM OF SAID STERILIZING CHAMBER INWARDLY OF THE DISCHARGE END THEREOF, HOLDING THE MILK AT SAID LAST-MENTIONED TEMPERATURE FOR MINIMUM OF ONE AND A HALF SECONDS AND A MAXIMUM OF APPROXIMATELY THREE SECONDS, SEPARATING THE STEAM FROM THE MILK, AND INSTANTANEOUSLY REDUCING THE TEMPERATURE OF THE MILK PREPARATORY TO FURTHER PROCESSING, THE LIQUID SEAL FORMED AND MAINTAINED BY THE MILK AT THE BOTTOM OF THE STERILIZING CHAMBER PREVENTING DISCHARGE OF THE STEAM WITH THE MILK.
Claim 2
Dependent Claim
163 words
A PROCESS FOR THE STERILIZATION OF MILK WHITE MAINTAINING THE NATURAL CHARACTERISTICS OF THE SAME COMPRISING THE STEPS OF PREWARMING THE MILK TO A TEMPERATURE OF APPROXIMATELY 145*F. TO APPROXIMATELY 165*F., SUBJECTING THE PREWARMED MILK IN THE FORM OF A THIN, DOWNWARDLY FLOWING FILM WITHIN A CLOSED STERILIZING CHAMBER TO DIRECT HEAT EXCHANGE CONTACT WITH STEAM OF A CONTROLLED AND EFFECTIVE TEMPERATURE SUFFICIENT TO RAISE EVERY PARTICLE OF MILK TO A TEMPERATURE OF 300*F. AND NO HIGHER, FORMING AND MAINTAINING A LIQUID SEAL OF THE MILK AT THE BOTTOM OF SAID STERILIZING CHAMBER INWARDLY OF THE DISCHARGE END THEREOF, HOLDING THE MILK AT SAID LAST-MENTIONED TEMPERATURE FOR MINIMUM OF ONE AND A HALF SECONDS AND A MAXIMUM OF APPROXIMATELY THREE SECONDS, SEPARATING THE STEAM FROM THE MILK, AND INSTANTANEOUSLY REDUCING THE TEMPERATURE OF THE MILK PREPARATORY TO FURTHER PROCESSING, THE LIQUID SEAL FORMED AND MAINTAINED BY THE MILK AT THE BOTTOM OF THE STERILIZING CHAMBER PREVENTING DISCHARGE OF THE STEAM WITH THE MILK.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-10 | 1963-02-09 | 1963-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-10 | 1967-02-09 | 1967-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-10 | 1971-02-09 | 1971-08-11 | $7700.00 | Window Closed / Lapsed |