Patent US6336362B1 successfully refreshed from Google Patents.
US3558282A
Expired / Lapsed
US
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Polymerisation apparatus
Assignee: Imperial Chemical Industries Ltd
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Filing: 1967-11-20
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Granted: 1971-01-26
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Expires: 1987-11-20
Abstract
Abstract SEPARATOR FOR MOLTEN POLYMER FLOWING IN TWO PHASE ANNULAR FLOW WITH A HIGHER VELOCITY GAS INCLUDING AT LEAST ONE ORIFICE AND SEPARATE MEANS TO ESTABLISH A PRESSURE GRADIENT IN THE AREA OF THE ORIFICE.
Inventors
- 👤 Ronald Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:08
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0042; B01D19/0052
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 |