US3067268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of reactor fouling
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1958-10-06
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Granted: 1962-12-04
•
Expires: 1978-10-06
Abstract
No abstract record available.
Inventors
- 👤 Dunlop Donald Dunwody
- 👤 Koontz John Dana
- 👤 Jr George Oliver Hillard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:33
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/04; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/95
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
AN IMPROVED PROCESS FOR PREPARING AN OXIDIZED POLYDIOLEFIN BY PREVENTING FOULDING IN A REACTION ZONE WHICH COMPRISES FORMING A SOLUTION OF A POLYMER OF A C4 TO C6 CONJUGATED DIOILEFIN IN A HYDROCARBON SOLVENT IN A REACTION ZONE; BLOWING SAID SOLUTION WITH AIR TO CREATE A LIQUID PHASE OF OXIDIZED POLYMER IN SAID REACTION ZONE AND A VAPOR PHASE OF SOLVENT AND NITROGEN IN SAID REACTION ZONE; AND MAINTAINING THE TEMPERATURE OF THE ENTIRE INTERIOR SURFACE OF THE GAS SPACE ABOVE THE LIQUID LEVEL OF THE REACTION ZONE BELOW 200*F. TO PROVIDE A CLEAR OXIDIZED POLYMER IN SAID LIQUID PHASE WITH A NEPHELOMETER ABSORPTION BETWEEN 10 AND 20%; SAID CLEAR OXIDIZED POLYMER BE-
Claim 2
Dependent Claim
113 words
AN IMPROVED PROCESS FOR PREPARING AN OXIDIZED POLYDIOLEFIN BY PREVENTING FOULDING IN A REACTION ZONE WHICH COMPRISES FORMING A SOLUTION OF A POLYMER OF A C4 TO C6 CONJUGATED DIOILEFIN IN A HYDROCARBON SOLVENT IN A REACTION ZONE; BLOWING SAID SOLUTION WITH AIR TO CREATE A LIQUID PHASE OF OXIDIZED POLYMER IN SAID REACTION ZONE AND A VAPOR PHASE OF SOLVENT AND NITROGEN IN SAID REACTION ZONE; AND MAINTAINING THE TEMPERATURE OF THE ENTIRE INTERIOR SURFACE OF THE GAS SPACE ABOVE THE LIQUID LEVEL OF THE REACTION ZONE BELOW 200*F. TO PROVIDE A CLEAR OXIDIZED POLYMER IN SAID LIQUID PHASE WITH A NEPHELOMETER ABSORPTION BETWEEN 10 AND 20%; SAID CLEAR OXIDIZED POLYMER BE-
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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) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |