US2442789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of wheat starch
Assignee: DOUGHNUT Corp
•
Filing: 1944-11-11
•
Granted: 1948-06-08
•
Expires: 1964-11-11
Abstract
No abstract record available.
Inventors
- 👤 James F Walsh
- 👤 David M Levitt
- 👤 Abraham H Goodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:27
CPC Classifications
C; C13; C13K; C13K1/00; C13K1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US235053A
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US334245A
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US1964641A
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US2096549A
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US2094558A
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US2268902A
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US2307491A
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US2307725A
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US2280085A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |