Patent US4055929A successfully refreshed from Google Patents.
US3536775A
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Removal of oxygen and oxygenated compounds from unsaturated hydrocarbons
Assignee: Phillips Petroleum Co
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Filing: 1969-06-02
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Granted: 1970-10-27
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Expires: 1989-06-02
Abstract
No abstract record available.
Inventors
- 👤 Thomas Hutson Jr
- 👤 Ronald E Ritter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:36
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/40; C07C15/42; C07C15/44; C07C15/46; C07C11/00; C07C11/12; C07C11/173; C07C11/18; C07C7/00; C07C7/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2394849A
Cited
US2790838A
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US2824148A
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US3308210A
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US3281489A
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US3336414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-26 | 1974-04-27 | 1974-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-26 | 1978-04-27 | 1978-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-26 | 1982-04-27 | 1982-10-27 | $7700.00 | Window Closed / Lapsed |