US3737288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifouling deflector in olefin polymerization reactors
Assignee: Exxon Mobil Corp
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Filing: 1971-06-18
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Granted: 1973-06-05
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Expires: 1991-06-18
Abstract
Abstract A SEMICIRCULAR FLOW DEFLECTOR IS MOUNTED AT THE DISCHARGE END OF A DRAFT TUBE-TYPE POLYMERIZATION REACTOR THEREBY DIRECTING THE FLOW IN A TURBULENT STREAM ALONG THE OUTER WALL OF THE DRAFT TUBE TO PREVENT FOULING BY THE BUILDUP OF POLYMER PRODUCT ON THE DRAFT TUBE. D R A W I N G
Inventors
- 👤 J Hochman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:21
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J19/1806; B01F; B01F27/00; B01F27/80; B01F27/91; B01J19/1868; B01J19/1875; B08; B08B; B08B17/00; B01F27/05; B01F27/11; B01F27/15
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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |