US3529356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of continuously dehydrating aluminum oxide hydrates
Assignee: Kloeckner Humboldt Deutz AG
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Filing: 1968-09-27
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Granted: 1970-09-22
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Expires: 1988-09-27
Abstract
No abstract record available.
Inventors
- 👤 Gunter Diettrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:02
CPC Classifications
C; C01; C01F; C01F7/00; C01F7/02; C01F7/44; C01F7/441; C01F7/445; F; F26; F26B; F26B17/00; F26B17/10; F26B17/101; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2350162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |