US2416490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalyst chamber insulation
Assignee: Phillips Petroleum Co
•
Filing: 1943-04-13
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Granted: 1947-02-25
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Expires: 1963-04-13
Abstract
No abstract record available.
Inventors
- 👤 Lawrence G Molique
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:47
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/008; B01J2208/00; B01J2208/00008; B01J2208/00017; B01J2208/00477; B01J2208/00495; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/0015; B01J2219/00155
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1948391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-24 | 1950-08-26 | 1951-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-24 | 1954-08-26 | 1955-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-24 | 1958-08-26 | 1959-02-25 | $7700.00 | Window Closed / Lapsed |