Patent US2757480A successfully refreshed from Google Patents.
Patent US3259374A successfully refreshed from Google Patents.
US3259374A
Expired / Lapsed
US
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Process and apparatus for the continuous treatment of plastic materials
Assignee: Henschel Werke AG
•
Filing: 1963-02-06
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Granted: 1966-07-05
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Expires: 1983-02-06
Abstract
No abstract record available.
Inventors
- 👤 Doebl Hans
- 👤 Ruhl Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:11
CPC Classifications
B; B01; B01F; B01F27/00; B01F27/60; B01F27/73; B01F27/05; B01F27/07; B01F27/072; B01F27/0723
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
AN APPARATUS FOR THE TREATING OF PLASTIC MATERIAL COMPRISING A CYLINDRIAL SHELL HAVING FEED AND DISCHARGE MEANS ATTACHED THERETO, A ROTATABLE SHAFT COAXIALLY MOUNTED IN THE SHELL AND HAVING POWER MEANS CONNECTED THERETO, AND A PLURALITY OF MIXING ELEMENTS MOUNTED ON THE SHAFT AT AN INCLINED ANGLE WITH RESPECT TO THE SHAFT AXIS, THE INDIVIDUAL MIXING ELEMENTS HAVING GREATER FORWARDLYCONVEYING AND LESSER REARWARDLY-CONVEYING MEANS THEREON.
Claim 2
Independent Claim
65 words
AN APPARATUS FOR THE TREATING OF PLASTIC MATERIAL COMPRISING A CYLINDRIAL SHELL HAVING FEED AND DISCHARGE MEANS ATTACHED THERETO, A ROTATABLE SHAFT COAXIALLY MOUNTED IN THE SHELL AND HAVING POWER MEANS CONNECTED THERETO, AND A PLURALITY OF MIXING ELEMENTS MOUNTED ON THE SHAFT AT AN INCLINED ANGLE WITH RESPECT TO THE SHAFT AXIS, THE INDIVIDUAL MIXING ELEMENTS HAVING GREATER FORWARDLYCONVEYING AND LESSER REARWARDLY-CONVEYING MEANS THEREON.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |