US2822304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sugar treatment
Assignee: Pittsburgh Coke and Chemical Co
•
Filing: 1956-03-29
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Granted: 1958-02-04
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Expires: 1976-03-29
Abstract
No abstract record available.
Inventors
- 👤 Donald W Gillmore
- 👤 Richard J Grant
- 👤 Stanton B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:32
CPC Classifications
C; C13; C13B; C13B20/00; C13B20/12; C01; C01B; C01B32/00; C01B32/30; C01B32/354; C01B32/36; C13B20/123; C13K; C13K1/00; C13K1/06; C13K1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PROCESS OF TREATING AN IMPURE READILY HYDROLYZABLE POLYSACCHARIDE SOLUTION TO DECOLORIZE AND PURIFY THE SAME. COMPRISING TREATING THE SOLUTION WITH AN ACTIVATED CARBONACEOUS ADSORBENT MATERIAL AND DEAD-BURNED MAGNESITE IN AN AMOUNT EFFECTIVE TO CONTROL TO PH OF THE SOLUTION ANDUP TO 15% BY WEIGHT OF THE CARBONACEOUS MATERIAL.
Claim 2
Dependent Claim
49 words
A PROCESS OF TREATING AN IMPURE READILY HYDROLYZABLE POLYSACCHARIDE SOLUTION TO DECOLORIZE AND PURIFY THE SAME. COMPRISING TREATING THE SOLUTION WITH AN ACTIVATED CARBONACEOUS ADSORBENT MATERIAL AND DEAD-BURNED MAGNESITE IN AN AMOUNT EFFECTIVE TO CONTROL TO PH OF THE SOLUTION ANDUP TO 15% BY WEIGHT OF THE CARBONACEOUS MATERIAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |