US3073810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for drying wet solid polymeric material
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1956-01-23
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Granted: 1963-01-15
•
Expires: 1976-01-23
Abstract
No abstract record available.
Inventors
- 👤 Ross James Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:35
CPC Classifications
C; C08; C08F; C08F6/00; C08F6/008; Y; Y10; Y10S; Y10S159/00; Y10S159/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
AM IMPROVED METHOD FOR DRYING AGGLOMERATED WET SOLID POLYMERIC MATERIAL OBTAINED BY ZIEGLER POLYMERIZATION OF A C2-C4 MONO-OLEFIN WHICH COMPRISES MECHANICALLY SEPARATING SAID WET POLYMERIC MATERIAL FROM AN ORGANIC SLURRY, PASSING A STREAM OF HOT GAS THROUGH SAID WET POLYMERIC MATERIAL AT A RATE SUFFICIENT TO DE-AGGLOMERATE SAID AGGLOMERATED POLYMERIC MATERIAL AND TO MAINTAIN THE RESULTANT DRY POLYMERIC MATERIAL IN THE FORM OF A FLUIDIZED BED, INTRODUCING WET POLYMERIC MATERIAL TO SAID BED AND WITHDRAWING DRY POLYMERIC MATERIAL FROM SAID BED.
Claim 2
Dependent Claim
81 words
AM IMPROVED METHOD FOR DRYING AGGLOMERATED WET SOLID POLYMERIC MATERIAL OBTAINED BY ZIEGLER POLYMERIZATION OF A C2-C4 MONO-OLEFIN WHICH COMPRISES MECHANICALLY SEPARATING SAID WET POLYMERIC MATERIAL FROM AN ORGANIC SLURRY, PASSING A STREAM OF HOT GAS THROUGH SAID WET POLYMERIC MATERIAL AT A RATE SUFFICIENT TO DE-AGGLOMERATE SAID AGGLOMERATED POLYMERIC MATERIAL AND TO MAINTAIN THE RESULTANT DRY POLYMERIC MATERIAL IN THE FORM OF A FLUIDIZED BED, INTRODUCING WET POLYMERIC MATERIAL TO SAID BED AND WITHDRAWING DRY POLYMERIC MATERIAL FROM SAID BED.
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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) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |