US3627550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reducible vitreous material
Assignee: US Philips Corp
•
Filing: 1969-12-12
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Granted: 1971-12-14
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Expires: 1989-12-12
Abstract
Abstract A REDUCIBLE VITREOUS MATERIAL COMPRISING LEAD OXIDE, BISMUTH OXIDE, SIO2 AND AL2O3. WHICH AFTER ADJUSTMENT OF THE SURFACE CONDUCTIVITY BETWEEN 10**11 AND 10**13 OHMS PER SQUARE BY HEATING IN A REDUCING ATMOSPHERE, IS PARTICULARLY SUITABALE FOR USE IN A DYNODE.
Inventors
- 👤 Marc Monneraye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:47
CPC Classifications
H; H01; H01J; H01J43/00; H01J43/04; H01J43/06; H01J43/18; H01J43/24; C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/07; C03C3/072; C03C3/074; C03C3/076; C03C3/102; C03C3/105; H01J1/00; H01J1/02; H01J1/32
Claims Analysis
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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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |