US2832672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufactur of boron nitride
Assignee: Saint Gobain Abrasives Inc
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Filing: 1954-12-02
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Granted: 1958-04-29
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Expires: 1974-12-02
Abstract
No abstract record available.
Inventors
- 👤 Guy H Fetterley
- 👤 George R Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:10
CPC Classifications
C; C01; C01B; C01B21/00; C01B21/06; C01B21/064; C01B21/0643; C04; C04B; C04B35/00; C04B35/515; C04B35/58; C04B35/583
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |