Patent US962170A successfully refreshed from Google Patents.
US962170A
Expired / Lapsed
US
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Process of making silicon nitrid.
Assignee: Individual
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Filing: —
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Granted: 1910-06-21
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Expires: 1927-06-21
Abstract
No abstract record available.
Inventors
- 👤 Alf Sinding-Larsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:21
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/06; C01B21/068; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/584
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) | 1913-06-20 | 1913-12-20 | 1914-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1917-06-20 | 1917-12-20 | 1918-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1921-06-20 | 1921-12-20 | 1922-06-21 | $7700.00 | Window Closed / Lapsed |