US2853476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removal of oxygen from hydrocarbon streams
Assignee: Phillips Petroleum Co
•
Filing: 1953-12-11
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Granted: 1958-09-23
•
Expires: 1973-12-11
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Kennedy
- 👤 Raymond A Tiede
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:48
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/148; C07C7/14833; C07C7/1485
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A PROCESS FOR THE REMOVAL OF OXYGEN FROM BUTADIENE WHICH COMPRISES TREATING THE SAID BUTADIENE WITH A SOLUTION OF SODIUM HYDROXIDE CONTAINING DISSOLVED SODIUM HYPOSULFITE.
Claim 2
Dependent Claim
25 words
A PROCESS FOR THE REMOVAL OF OXYGEN FROM BUTADIENE WHICH COMPRISES TREATING THE SAID BUTADIENE WITH A SOLUTION OF SODIUM HYDROXIDE CONTAINING DISSOLVED SODIUM HYPOSULFITE.
References Cited (Backward Citations)
US2565354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |