Patent US3726845A successfully refreshed from Google Patents.
US3726845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supplying catalyst to a reaction zone
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1971-03-22
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Granted: 1973-04-10
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Expires: 1991-03-22
Abstract
Abstract IN THE POLYMERIZATION OF ALPHA MONO-OLEFINS WITH A CATALYST WHICH TENDS TO CLOG LINES AND PUMPS AND WHEREIN A DILUENT FOR THE REACTION IS EMPLOYED, THE CATALYST LINE AND PUMP AREMAINTAINED CLEAN AND FREE OF CATALYST DEPOSITS BY ALTERNATELY FLOWING OR SUPPLYING CATALYST AND DILUENT AS SEPARATE STREAMS THROUGH SAID CATALYST LINE AND PUMP WHICH ALSO ALLOWS CATALYST SUPPLY TO BE CONTROLLED.
Inventors
- 👤 J Nickerson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:58
CPC Classifications
C; C08; C08F; C08F10/00; C08F110/00; C08F110/04; C08F110/06; Y; Y10; Y10S; Y10S526/00; Y10S526/919
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |