US2490431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrating process for starchy vegetables, fruits, and the like
Assignee: Research Corp
•
Filing: 1946-07-19
•
Granted: 1949-12-06
•
Expires: 1966-07-19
Abstract
No abstract record available.
Inventors
- 👤 John W Greene
- 👤 Ralph M Conrad
- 👤 Frederick A Rohrman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:22
CPC Classifications
A; A23; A23L; A23L19/00; A23L19/10; A23L19/12; A23L19/15
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1151674A
Cited
US1259635A
Cited
US1571945A
Cited
US2176347A
Cited
US2278472A
Cited
US2381838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |