US3617301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of beer
Assignee: Ineos Silicas Ltd
•
Filing: 1968-04-23
•
Granted: 1971-11-02
•
Expires: 1988-04-23
Abstract
Abstract A process for the treatment of beer to reduce its tendency to form haze on storage and to maintain or improve its head or foam retention characteristics in which the beer is treated with a silica hydrogel having a surface area of at least 700 m.2/g. and a mean pore diameter from 30-120A.
Inventors
- 👤 Donald Barby
- 👤 Great Barrow
- 👤 James P Quinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:55
CPC Classifications
C; C12; C12H; C12H1/00; C12H1/02; C12H1/04; C12H1/0408
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
22 words
A process as claimed in claim 1, in which the mean pore diameter of the silica is from 40 to 80 A.
Claim 2
Dependent Claim
21 words
A process as claimed in claim 2, in which the average particle size of the silica is less than 20 microns.
Claim 3
Dependent Claim
27 words
A process as claimed in claim 3, in which at least 10 percent by weight of the hydrogel is made up of particles smaller than 10 microns.
Claim 4
Dependent Claim
27 words
A process as claimed in claim 4, in which at least 10 percent by weight of the hydrogel is made up of particles smaller than 5 microns.
Claim 5
Dependent Claim
26 words
A process as claimed in claim 1 in which the distribution of pore sizes on which the mean pore diameter is based is a wide one.
References Cited (Backward Citations)
US2316241A
Cited
US3436225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |