US3795670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making starch triacetates
Assignee: United States Department of Agriculture
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Filing: 1973-03-05
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Granted: 1974-03-05
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Expires: 1993-03-05
Abstract
Abstract AN IMPROVED PROCESS FOR THE ESTERIFICATION OF STARCHES SUCH AS HIGH-AMYLOSE STARCHES AND AMYLOSE UNDER CONDITIONS OF MINIMUM DEPOLYMERIZATION OF THE POLYSACCHARIDE TO OBTAIN HIGH MOLECULAR WEIGHT STARCH TRIACETATES SOLUBLE IN ORGANIC SOLVENTS FOR FIBER AND FILM MANUFACTURE IS DESCRIBED.
Inventors
- 👤 A Mark
- 👤 C Mehltretter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:52
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/02; C08B31/04; C08B33/00; C08B33/02
Claims Analysis
Total Claims: 0
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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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |