US3466757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drying and recovery process
Assignee: Dow Chemical Co
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Filing: 1967-11-24
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Granted: 1969-09-16
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Expires: 1987-11-24
Abstract
No abstract record available.
Inventors
- 👤 James L Dunn Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:46
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; D; D06; D06B; D06B9/00; D06B9/06; F26B21/00; F26B21/40; Y; Y02; Y02P; Y02P70/00; Y02P70/50; Y02P70/62
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) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |