US2608470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of hydrocarbon oil to diesel fuel and carbon black
Assignee: Phillips Petroleum Co
•
Filing: 1948-10-01
•
Granted: 1952-08-26
•
Expires: 1968-10-01
Abstract
No abstract record available.
Inventors
- 👤 Carl J Helmers
- 👤 Eugene V Mathy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:26
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/04; C10L1/06; C09; C09C; C09C1/00; C09C1/44; C09C1/48; C09C1/50; C10G; C10G11/00; C10G9/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2228510A
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US2342888A
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US2361080A
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US2383218A
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US2375796A
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US2366490A
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US2429875A
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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) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |