US3949099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for pasteurizing a liquid
Assignee: United States Department of Agriculture
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Filing: 1974-06-11
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Granted: 1976-04-06
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Expires: 1994-06-11
Abstract
Abstract Liquid is heated to a pasteurization temperature, pumped into a holding zone wherein the liquid is divided into a plurality of slugs and the slugs are then impelled through the holding zone by mechanical action, such as piston action, applied to each individual slug. A non-exclusive, irrevocable, royalty-free license in the invention herein described, throughout the world for all purposes of the United States Government, with the power to grant sublicenses for such purposes, is hereby granted to the Government of the United States of America.
Inventors
- 👤 Vern F. Kaufman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:13
CPC Classifications
A; A23; A23B; A23B5/00; A23B5/005; A23B5/0055; A23B2/00; A23B2/40; A23B2/42; A23B2/46
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
62 words
A method for pasteurizing a liquid, which comprises - heating the liquid to a pasteurization temperature, pumping the hot liquid into a holding zone, within the holding zone dividing the liquid into a plurality of individual slugs, and positively impelling the slugs through the holding zone at a rate sufficient to achieve desired pasteurization by mechanical action applied to each individual slug.
Claim 2
Independent Claim
62 words
A method for pasteurizing a liquid, which comprises - heating the liquid to a pasteurization temperature, pumping the hot liquid into a holding zone, within the holding zone dividing the liquid into a plurality of individual slugs, and positively impelling the slugs through the holding zone at a rate sufficient to achieve desired pasteurization by mechanical action applied to each individual slug.
Claim 3
Independent Claim
68 words
A method for pasteurizing a liquid, which comprises - heating the liquid to a pasteurization temperature, pumping the hot liquid into a holding zone equipped with a plurality of pistons, within the holding zone dividing the liquid into a plurality of individual slugs, and positively impelling the slugs through the holding zone at a rate sufficient to achieve desired pasteurization by piston action applied to each individual slug.
Claim 4
Independent Claim
68 words
A method for pasteurizing a liquid, which comprises - heating the liquid to a pasteurization temperature, pumping the hot liquid into a holding zone equipped with a plurality of pistons, within the holding zone dividing the liquid into a plurality of individual slugs, and positively impelling the slugs through the holding zone at a rate sufficient to achieve desired pasteurization by piston action applied to each individual slug.
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) | 1979-04-06 | 1979-10-06 | 1980-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-06 | 1983-10-06 | 1984-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-06 | 1987-10-06 | 1988-04-06 | $7700.00 | Window Closed / Lapsed |