US3558326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for isomerizing and purifying hop extracts
Assignee: Miller Brewing Co
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Filing: 1967-09-21
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Granted: 1971-01-26
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Expires: 1987-09-21
Abstract
Abstract SOLVENT IS ADDED, AND THE HOP ACIDS ENTER THE SOLVENT PHASE AND ARE RECOVERED THEREFROM. THE EXTRACT IS USED IN MAKING BEER OF IMPROVED LIGHT STABILITY. A HOP EXTRACT SUBSTANTIALLY FREE FROM WAXES, OILS, AND NONACIDIC HOP COMPONENTS IS PREPARED BY TREATING A WATERIMMISCIBLE SOLVENT SOLUTION OF HOP EXTRACT WITH AN QUEOUS ALKALINE SOLUTION TO ISOMERIZE ACID HOP COMPONENETS IN THE AQUEOUS PHASE. THE WAXES, OILS, AND NONACIDIC HOP COMPONENTS ENTER THE NONQUEOUS PHASE AND ARE REMOVED WITH THE LATTER. THE AQUEOUS PHASE IS ACIDIFIED, MORE
Inventors
- 👤 Donald H Westermann
- 👤 William C Herwig
- 👤 William J Durant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:47
CPC Classifications
C; C12; C12C; C12C3/00; C12C3/12; C12C3/04; C12C3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |