US3658588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of starch from cellulose treated with phosphoric acid
Assignee: JAMES R HARVEY
•
Filing: 1970-02-04
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Granted: 1972-04-25
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Expires: 1990-02-04
Abstract
Abstract Method of preparing an edible starch from a cellulose, such as cotton, by treating the cellulose with phosphoric acid.
Inventors
- 👤 James R Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:32
CPC Classifications
C; C08; C08B; C08B30/00; C13; C13K; C13K1/00; C13K1/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
10 words
The method of claim 1 wherein said cellulose is cotton.
References Cited (Backward Citations)
US2526607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |