US2951776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starch product and method of producing same
Assignee: Anheuser Busch Companies LLC
•
Filing: 1959-01-22
•
Granted: 1960-09-06
•
Expires: 1979-01-22
Abstract
No abstract record available.
Inventors
- 👤 Barrett L Scallet
- 👤 Ernest A Sowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:49
CPC Classifications
C; C08; C08B; C08B30/00; C08B30/12; C08B30/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PROCESS FOR PRODUCING AN OIL WELL DRILLING STARCH INCLUDING THE STEPS OF COMBINING A STARCH SLURRY IN GRANULE FORM HAVING A BAUME OF 10*-25* AT 60*F. CONTAINING LESS THAN 8% PIGMENTED CORN GLUTEN IMPURITIES AND A CHLORITE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL CHLORITES, ALKALINE EARTH METAL CHLORITES AND AMMONIUM CHLORITE IN AN AMOUNT SUFFICIENT TO DECOLOR THE STARCH WITHOUT DEGRADING IT, RECOVERING AN UNDEGRADED PARTIALLY DECOLORED GRANULAR STARCH PRODUCT, GELATINIZING THE PARTIALLY DECOLORED STARCH PRODUCT TO FURTHER DECOLOR THE PIGMENTED IMPURITIES, AND RECOVERING A SUBSTATIALLY DECOLORED, GELATINIZED, UNDEGRADED COLD SWELLING OIL WELL DRILLING STARCH WHICH HAS SUBSTANTIALLY THE SAME WATER LOSS CHARACTERISTICS AS A NORMAL COLORED GELATINIZED STARCH.
Claim 2
Dependent Claim
112 words
A PROCESS FOR PRODUCING AN OIL WELL DRILLING STARCH INCLUDING THE STEPS OF COMBINING A STARCH SLURRY IN GRANULE FORM HAVING A BAUME OF 10*-25* AT 60*F. CONTAINING LESS THAN 8% PIGMENTED CORN GLUTEN IMPURITIES AND A CHLORITE SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL CHLORITES, ALKALINE EARTH METAL CHLORITES AND AMMONIUM CHLORITE IN AN AMOUNT SUFFICIENT TO DECOLOR THE STARCH WITHOUT DEGRADING IT, RECOVERING AN UNDEGRADED PARTIALLY DECOLORED GRANULAR STARCH PRODUCT, GELATINIZING THE PARTIALLY DECOLORED STARCH PRODUCT TO FURTHER DECOLOR THE PIGMENTED IMPURITIES, AND RECOVERING A SUBSTATIALLY DECOLORED, GELATINIZED, UNDEGRADED COLD SWELLING OIL WELL DRILLING STARCH WHICH HAS SUBSTANTIALLY THE SAME WATER LOSS CHARACTERISTICS AS A NORMAL COLORED GELATINIZED STARCH.
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) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |