US2985506A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing barium titanate
Assignee: Individual
•
Filing: 1957-12-06
•
Granted: 1961-05-23
•
Expires: 1977-12-06
Abstract
No abstract record available.
Inventors
- 👤 Vita Sam Di
- 👤 Robert J Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:13
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; B; B82; B82Y; B82Y30/00; C01; C01G; C01G23/00; C01G23/003; C01G23/006; C01P; C01P2002/00; C01P2002/70; C01P2002/76; C01P2004/00; C01P2004/60; C01P2004/62; C01P2004/64
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) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |