US3448039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vaporizing and pretreating aromatic hydrocarbon feed stock without polymerization
Assignee: Bethlehem Steel Corp
•
Filing: 1967-07-19
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Granted: 1969-06-03
•
Expires: 1987-07-19
Abstract
No abstract record available.
Inventors
- 👤 Mehmet Orhan Tarhan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:18
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3081259A
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US3094481A
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US3207802A
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US3394199A
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US3201488A
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US3222410A
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US3215618A
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US3296120A
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US3260765A
Cited
US3400168A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |