US3860729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preservation of beverages with poly(hexamethylenebiguanide hydrochloride)
Assignee: F AND M SCHAEFER BREWING CO
•
Filing: 1973-10-05
•
Granted: 1975-01-14
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Expires: 1993-10-05
Abstract
Abstract WHEREIN N IS SUCH THAT THE AVERAGE MOLECULAR WEIGHT LIES BETWEEN 900 AND 1,300. Beverages are preserved against undesirable microbial growth by incorporating into the beverage a polymeric biguanide compound of the formula
Inventors
- 👤 Frede B Strandskov
- 👤 John B Bocklemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:32
CPC Classifications
C; C12; C12H; C12H1/00; C12H1/12; C12H1/14; A; A23; A23B; A23B2/00; A23B2/70; A23B2/725; A23B2/729; A23B2/762; A23B70/00; A23B70/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
23 words
A method according to claim 1 wherein the amount of polymeric biguanide incorporated into the beverage is from 0.4 to about 50 ppm.
Claim 2
Dependent Claim
23 words
A method according to claim 2 wherein the amount of polymeric biguanide incorporated into the beverage is from 1 to about 10 ppm.
Claim 3
Dependent Claim
14 words
A method according to claim 1 wherein the beverage is a light alcoholic beverage.
Claim 4
Dependent Claim
12 words
A method according to claim 4 wherein the beverage is a beer.
Claim 5
Dependent Claim
23 words
A method according to claim 5 wherein the amount of polymeric biguanide incorporated into the beer is from 0.4 to about 5 ppm.
Claim 6
Dependent Claim
24 words
A method according to claim 6 wherein the amount of polymeric biguanide incorporated into the beer is from about 1.0 to about 2.0 ppm.
Claim 7
Dependent Claim
31 words
A composition which comprises a beverage selected from the group of fruit and vegetable juices, soft drinks and light alcoholic beverages having incorporated therein the polymeric biguanide material of the formula
Claim 8
Dependent Claim
20 words
A composition according to claim 8 wherein the amount of polymeric biguanide present is from 0.4 to about 50 ppm.
Claim 9
Dependent Claim
21 words
A composition according to claim 9 wherein the amount of polymeric biguanide present is from about 1 to about 10 ppm.
Claim 10
Dependent Claim
14 words
A composition according to claim 8 wherein the beverage is a light alcoholic beverage.
Claim 11
Dependent Claim
12 words
A composition according to claim 11 wherein the beverage is a beer.
Claim 12
Dependent Claim
23 words
A composition according to claim 12 wherein the amount of polymeric biguanide present in the beer is from 0.4 to about 5 ppm.
Claim 13
Dependent Claim
24 words
A composition according to claim 13 wherein the amount of polymeric biguanide present in the beer is from about 1.0 to about 2.0 ppm.
References Cited (Backward Citations)
US2990425A
Cited
US3389999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |