Patent US3557536A successfully refreshed from Google Patents.
US3557536A
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Filter assembly
Assignee: Applied Automation Inc
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Filing: 1968-12-30
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Granted: 1971-01-26
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Expires: 1988-12-30
Abstract
Abstract A HEATED FILTER ASSEMBLY IS PROVIDED FOR USE IN REMOVING THERMOPLASTIC PARTICLES FROM A VAPOR STREAM. THE ASSEMBLY INCLUDES A REPLACEABLE POROUS FILTER UNIT THROUGH WHICH THE VAPOR STREAM IS CAUSED TO PASS. THE UNIT IS HEATED TO A PREETERMINED TEMPERATURE WHEREBY THE THERMOPLASTIC PARTICLES ENTRAINED IN THE VAPOR STREAM ARE RETAINED BY THE UNIT AND BECOME SOFT OR MELT AND FORM A STICKY AGGLOMERATE.
Inventors
- 👤 Otis E Ririe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:45
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |