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US3383308A
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Fractionating hydrocarbons
Assignee: Pullman Inc
•
Filing: 1967-03-14
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Granted: 1968-05-14
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Expires: 1987-03-14
Abstract
No abstract record available.
Inventors
- 👤 Henry P Wickham
- 👤 Friend Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:45
CPC Classifications
C; C10; C10G; C10G31/00; B; B01; B01D; B01D3/00; B01D3/14; C07; C07C; C07C7/00; C07C7/04; C10G7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2404677A
Cited
US2534870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |