US2947633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of vegetable beverages
Assignee: GAF Chemicals Corp
•
Filing: 1957-08-29
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Granted: 1960-08-02
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Expires: 1977-08-29
Abstract
No abstract record available.
Inventors
- 👤 William M Perry
- 👤 George G Stoner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:41
CPC Classifications
C; C12; C12H; C12H1/00; C12H1/02; C12H1/04; C12H1/0416; C12H1/0424; A; A23; A23L; A23L2/00; A23L2/70; A23L2/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
THE PROCESS FOR REMOVING TANNINS, TANNIC ACID AND PROTEIN-TANNIN COMPLEXES FROM VEGETABLE BEVERAGES, WHICH COMPRISES FLOWING A BEVERAGE CONTAINING AT LEAST ONE OF THE AFORESAID COMPOUNDS THROUGH A BED OF SOLID WATER-INSOLUBLE COPOLYMER, IN PARTICULATE FORM, SAID COPOLYMER SUBSTANTIALLY CONSISTING OF N-VINYL-A-PYRROLIDONE COPOLYMERIZED WITH A SECOND COPOLYMERIZABLE VINYL COMPOUND, WHEREBY THE AFORESAID COMPOUNDS COMBINE WITH SAID SOLID WATER-INSOLUBLE COPOLYMER AND WITHDRAWING FROM SAID BED SAID BEVERAGE FREED OF THE AFORESAID COMPOUNDS.
Claim 2
Dependent Claim
71 words
THE PROCESS FOR REMOVING TANNINS, TANNIC ACID AND PROTEIN-TANNIN COMPLEXES FROM VEGETABLE BEVERAGES, WHICH COMPRISES FLOWING A BEVERAGE CONTAINING AT LEAST ONE OF THE AFORESAID COMPOUNDS THROUGH A BED OF SOLID WATER-INSOLUBLE COPOLYMER, IN PARTICULATE FORM, SAID COPOLYMER SUBSTANTIALLY CONSISTING OF N-VINYL-A-PYRROLIDONE COPOLYMERIZED WITH A SECOND COPOLYMERIZABLE VINYL COMPOUND, WHEREBY THE AFORESAID COMPOUNDS COMBINE WITH SAID SOLID WATER-INSOLUBLE COPOLYMER AND WITHDRAWING FROM SAID BED SAID BEVERAGE FREED OF THE AFORESAID COMPOUNDS.
References Cited (Backward Citations)
US2688550A
Cited
US2811449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-02 | 1964-02-01 | 1964-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-02 | 1968-02-01 | 1968-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-02 | 1972-02-01 | 1972-08-02 | $7700.00 | Window Closed / Lapsed |