US3729321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of beer
Assignee: G HEILEMAN BREWING COMPANY Inc A DELEWARE Co
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Filing: 1970-10-20
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Granted: 1973-04-24
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Expires: 1990-10-20
Abstract
Abstract BEER IS PREPARED BY CARRYING OUT THE STEPS OF FERMENTING, AGING AND FINISHING IN A LARGE SIZE THIN-SHELLED OUTDOOR TANK HAVING A CONICAL BOTTOM INNER SURFACE DOWNWARDLY SLOPED AT 5 TO 25* TO AN OUTLET. CARBON DIOXIDE GAS IS SUPPLIED FROM AN EXTERNAL SUPPLY TO A CENTRAL AREA ABOVE THE TANK BOTTOM AND BUBBLED UPWARDLY AT A RATE WHICH EFFECTS UPWARD CENTRAL FLOW OF COLDER LIQUID WHEREBY THERE IS ACHIEVED COOLING BY INDUCED CONVENTION, AND DOWNWARD PERIPHRAL FLOW OF LIQUID ALONG AND ABOUT THE TANK WALLS TO TRANSPORT YEAST TO A SETTLING ZONE ON THE BOTTOM WITH MINIMAL DISTURBANCE OF YEAST SETTLING ON THE BOTTOM.
Inventors
- 👤 N Vacano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:18
CPC Classifications
C; C12; C12C; C12C11/00; C12C11/11; C12C11/003; C12C11/006; C12C13/00; C12C13/02; C12H; C12H1/00; C12H1/12; C12H1/14; C12H1/22
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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |