US2563085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for removing solid polymeric material from process equipment
Assignee: Phillips Petroleum Co
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Filing: 1948-01-02
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Granted: 1951-08-07
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Expires: 1968-01-02
Abstract
No abstract record available.
Inventors
- 👤 Utsinger Zoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:24
CPC Classifications
C; C07; C07C; C07C11/00; C07C11/12; C07C11/16; C07C11/167; C07C7/00; C07C7/04; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/95
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
A PROCESS FOR REMOVING AND DEACTIVATING BUTADIENE POPCORN POLYMERS AND THEIR SEEDS FOUND IN PROCESSING EQUIPMENT, WHICH COMPRISES PASSING A MIXTURE OF HOT GASES COMPRISING LESS FREEOXYGEN THAN IS NORMALLY PRESENT IN AIR THROUGH A PROCESSING ZONE CONTAINING SAID POLYMER, RAISING THE TEMPERATURE OF SAID POLYMER TO THE IGNITION POINT SO THAT COMBUSTION TAKES PLACE, CONTROLLING THE RATE OF SAID COMBUSTION TAKES PLACE, CONTROLLING THE TEMPERATURE DOES NOT EXCEED ABOUT 1000* F. AND MAINTAINING A TEMPERATURE AT THE OUTLET OF SAID PROCESSING EQUIPMENT OF ABOUT 600* F. FOR ABOUT TWO HOURS AFTER COMPLETION OF SAID COMBUSTION.
References Cited (Backward Citations)
US2289351A
Cited
US2423157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |