US3384447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing monocrystalline boracites
Assignee: Individual
•
Filing: 1964-10-15
•
Granted: 1968-05-21
•
Expires: 1984-10-15
Abstract
No abstract record available.
Inventors
- 👤 Schmid Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:06
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/06; C01B35/08; C01B35/10; C30; C30B; C30B25/00; C30B29/00; C30B29/10; C30B29/12
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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |