US3719661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starch thickener
Assignee: Primary Products Ingredients Americas LLC
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Filing: 1968-08-29
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Granted: 1973-03-06
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Expires: 1988-08-29
Abstract
Abstract A starch thickener comprising phosphorus oxyhalide cross-linked hydroxypropyl cereal starch having a hydroxypropyl D.S. of at least 0.10 and pH 6.5 buffered salt CIV viscosity of about 200 to 400 gram-centimeters after 10 minutes and 190 to 300 gramcentimeters after 40 minutes prepared by reacting a phosphorus oxyhalide with granular hydroxypropyl cereal starch.
Inventors
- 👤 J Tuschhoff
- 👤 J Robinson
- 👤 G Bookwalter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:51
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/003; C08B31/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A starch thickener comprising phosphorus oxyhalide cross-linked hydroxypropyl cereal starch having a hydroxypropyl D.S. of at least 0.10 and pH 6.5 buffered salt CIV viscosity of about 200 to 400 gram - centimeters after 10 minutes and 190 to 300 gram -centimeters after 40 minutes prepared by cross-linking granular hydroxypropyl cereal starch with a phosphorus oxyhalide.
Claim 2
Dependent Claim
56 words
A starch thickener comprising phosphorus oxyhalide cross-linked hydroxypropyl cereal starch having a hydroxypropyl D.S. of at least 0.10 and pH 6.5 buffered salt CIV viscosity of about 200 to 400 gram - centimeters after 10 minutes and 190 to 300 gram -centimeters after 40 minutes prepared by cross-linking granular hydroxypropyl cereal starch with a phosphorus oxyhalide.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |