US3492148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alumina coated metal element for catalyst support
Assignee: Universal Oil Products Co
•
Filing: 1969-02-10
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Granted: 1970-01-27
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Expires: 1989-02-10
Abstract
No abstract record available.
Inventors
- 👤 George L Hervert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:30
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; B01J37/00; B01J37/02; B01J37/024; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249967; Y10T428/24997
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3437605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |