US3537694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plant comprising a stationary,refractory-lined reaction vessel
Assignee: Voestalpine AG
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Filing: 1967-06-16
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Granted: 1970-11-03
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Expires: 1987-06-16
Abstract
No abstract record available.
Inventors
- 👤 Rudolf Rinesch
- 👤 Gerald Kaspar
- 👤 Josef Lambrecht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:51
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/42; C21C5/285; Y; Y10; Y10S; Y10S266/00; Y10S266/901
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) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |