Patent US3095391A successfully refreshed from Google Patents.
US3095391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amylaceous graft copolymers and process for preparing same
Assignee: Primary Products Ingredients Americas LLC
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Filing: 1959-03-13
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Granted: 1963-06-25
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Expires: 1979-03-13
Abstract
No abstract record available.
Inventors
- 👤 Charles E Brockway
- 👤 Reedus R Estes
- 👤 David R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:14
CPC Classifications
C; C08; C08F; C08F251/00; C08B; C08B31/00; Y; Y10; Y10S; Y10S8/00; Y10S8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
THE METHOD OF PRODUCING A CHEMICALLY MODIFIED GRANULAR STARCH OF ALTERED PASTE CHARACTERISTICS THAT COMPRISES REACTING, (1) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF GRANULAR, UNPASTED STARCH IN AQUEOUS SUSPENSION AND SUPERFICIALLY DRY, GRANULAR UNPASTED STARCH CONTAINING AT LEAST 10% WATER, AND (2) ETHYLENICALLY UNSATURATED MONOMER THAT POLYMERIZES BY ADDITION POLYMERIZATION, IN THE PRESENCE OF A PEROXIDIC FREE-RADICAL CATALYST AT A TEMPERATURE BELOW THE GELATINIZATION TEMPERATURE OF SAID STARCH, MAINTAINING SAID MATERIAL IN ITS GRANULAR FORM THROUGHOUT THE REACTION AND SEPARATING IN THE PHYSICAL FORM OF THE ORIGINAL STARCH A PRODUCT THAT IS FILTERABLE FROM ITS AQUEOUS SUSPENSIONS.
Claim 2
Independent Claim
99 words
THE METHOD OF PRODUCING A CHEMICALLY MODIFIED GRANULAR STARCH OF ALTERED PASTE CHARACTERISTICS THAT COMPRISES REACTING, (1) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF GRANULAR, UNPASTED STARCH IN AQUEOUS SUSPENSION AND SUPERFICIALLY DRY, GRANULAR UNPASTED STARCH CONTAINING AT LEAST 10% WATER, AND (2) ETHYLENICALLY UNSATURATED MONOMER THAT POLYMERIZES BY ADDITION POLYMERIZATION, IN THE PRESENCE OF A PEROXIDIC FREE-RADICAL CATALYST AT A TEMPERATURE BELOW THE GELATINIZATION TEMPERATURE OF SAID STARCH, MAINTAINING SAID MATERIAL IN ITS GRANULAR FORM THROUGHOUT THE REACTION AND SEPARATING IN THE PHYSICAL FORM OF THE ORIGINAL STARCH A PRODUCT THAT IS FILTERABLE FROM ITS AQUEOUS SUSPENSIONS.
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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |