US3038533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying process and apparatus for heatsensitive materials
Assignee: Purdue Research Foundation
•
Filing: 1956-03-19
•
Granted: 1962-06-12
•
Expires: 1976-03-19
Abstract
No abstract record available.
Inventors
- 👤 Edward W Comings
- 👤 Howard A Mclain
- 👤 John E Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:06
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/16; B01D1/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1634640A
Cited
US954451A
Cited
US1071692A
Cited
US1183098A
Cited
US1163339A
Cited
US1594064A
Cited
US1866768A
Cited
US1594065A
Cited
US1830174A
Cited
US1779516A
Cited
US1964858A
Cited
US2297726A
Cited
US2413420A
Cited
US2460546A
Cited
US2572321A
Cited
US2880794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |