US3549619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of amylose acetate dispersions
Assignee: United States Department of Agriculture
•
Filing: 1969-04-02
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Granted: 1970-12-22
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Expires: 1989-04-02
Abstract
No abstract record available.
Inventors
- 👤 Arthur M Mark
- 👤 Charles L Mehltretter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:55
CPC Classifications
C; C08; C08B; C08B33/00; C08B33/02; C08L; C08L3/00; C08L3/14; C08L3/16
Claims Analysis
Total Claims: 0
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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) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |