US3415625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of hexagonal boron nitride
Assignee: Lonza Werke GmbH
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Filing: 1967-04-19
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Granted: 1968-12-10
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Expires: 1987-04-19
Abstract
No abstract record available.
Inventors
- 👤 Babl Albert
- 👤 Geng Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:03
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/40; C01; C01B; C01B21/00; C01B21/06; C01B21/064; C01B21/0645; C10M; C10M103/00; C10M125/00; C10M2201/00; C10M2201/06; C10M2201/061; C10M2201/16; C10M2201/18
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) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |