US3184403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-section catalyst bed
Assignee: Phillips Petroleum Co
•
Filing: 1960-09-12
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Granted: 1965-05-18
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Expires: 1980-09-12
Abstract
No abstract record available.
Inventors
- 👤 Lloyd E Gardner
- 👤 Robert J Hogan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:18
CPC Classifications
C; C10; C10G; C10G65/00; C10G65/02; C10G65/12; B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; B01J23/00; B01J23/70; B01J23/76; B01J23/84; B01J23/85; B01J23/88; B01J23/882; B01J37/00; B01J37/22; B01J37/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2839450A
Cited
US2911352A
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US2945803A
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US2925374A
Cited
US2987468A
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US3003953A
Cited
US3008895A
Cited
US3023158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |