US3471131A
Expired / Lapsed
US
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Continuous mixing apparatus
Assignee: Wacker Chemie AG
•
Filing: 1966-07-26
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Granted: 1969-10-07
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Expires: 1986-07-26
Abstract
No abstract record available.
Inventors
- 👤 Rupprecht Fritzweiler
- 👤 Joseph Heckmaier
- 👤 Ferdinand Gerstner
- 👤 Hans Wimmer
- 👤 Heinz Winkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:39
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/34; B29B7/38; B29B7/40; B29B7/405; B29B7/407; B01; B01F; B01F27/00; B01F27/27; B01F27/272; B01F27/2722; B29B7/401; B29B7/404; B01F25/00; B01F2025/91; B01F2025/911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2674104A
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US2714744A
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US2857144A
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US3012977A
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US2969960A
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US2965362A
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US2970817A
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US3111389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |