US2467169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High dielectric material and method of making same
Assignee: NL Industries Inc
•
Filing: 1942-11-12
•
Granted: 1949-04-12
•
Expires: 1962-11-12
Abstract
No abstract record available.
Inventors
- 👤 Wainer Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:19
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/472; C04B35/465; C04B35/47
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2165819A
Cited
US2098812A
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US2071452A
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US2220765A
Cited
US2305327A
Cited
US2277733A
Cited
US2277734A
Cited
US2420692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-04-11 | 1952-10-11 | 1953-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-11 | 1956-10-11 | 1957-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-11 | 1960-10-11 | 1961-04-12 | $7700.00 | Window Closed / Lapsed |