US3493402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic decomposition of silanes
Assignee: Ethyl Corp
•
Filing: 1967-06-29
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Granted: 1970-02-03
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Expires: 1987-06-29
Abstract
No abstract record available.
Inventors
- 👤 Leonard M Niebylski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:06
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B32/00; C01B32/90; C01B32/914; C01B32/956; C01B32/963; C01B32/977; C23; C23C; C23C24/00; C01P; C01P2004/00; C01P2004/80; C01P2006/00; C01P2006/60; C01P2006/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |