Patent US3910796A successfully refreshed from Google Patents.
US3910796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary electron multiplier glass
Assignee: Hoya Glass Works Ltd
•
Filing: 1974-03-05
•
Granted: 1975-10-07
•
Expires: 1994-03-05
Abstract
Abstract A glass material for producing a secondary electron multiplying tube which comprises, in mol percent, V2O510 to 45, WO3 0 to 45, Fe2O3 0 to 25, WO3 + Fe2O3 15 to 45, BaO 0 to 15, PbO 0 to 15, P2O5 30 to 75 and SiO2 0 to 15.
Inventors
- 👤 Yoshiyuki Asahara
- 👤 Tetsuro Izumitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:42
CPC Classifications
H; H01; H01J; H01J1/00; H01J1/02; H01J1/32; C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/12; C03C3/16; C03C3/21
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
46 words
A GLASS MATERIAL FOR PRODUCING A SECONDARY ELECTRON MULTIPLYING TUBE WHICH CONSISTS, BY MOL PERCENT, OF V2O5 10 TO 45, WO30 TO 45, FE2030 TO 25,WO3+FE20315 TO 45, BAO O TO 15, PBO 0 TO 15, PHD 205 30 TO 75 AND SIO2 0 TO 15
Claim 2
Dependent Claim
46 words
A GLASS MATERIAL FOR PRODUCING A SECONDARY ELECTRON MULTIPLYING TUBE WHICH CONSISTS, BY MOL PERCENT, OF V2O5 10 TO 45, WO30 TO 45, FE2030 TO 25,WO3+FE20315 TO 45, BAO O TO 15, PBO 0 TO 15, PHD 205 30 TO 75 AND SIO2 0 TO 15
Claim 3
Dependent Claim
34 words
The glass material according to claim 1 which consists, by mol percent, of V2O5 10 to 29.5, WO3 15 to 25.0, BaO 10 to 15, P2O5 35 to 50 and SiO2 5 to 15.
Claim 4
Dependent Claim
38 words
The glass material according to claim 1 which consists, by mol percent, of V2O5 15 to 25, WO3 15 to 17, BaO 3 to 7, PbO 5 to 15, P2O5 50 to 55 and SiO2 0 and 10.
References Cited (Backward Citations)
US2518194A
Cited
US3278317A
Cited
US3520831A
Cited
US3503902A
Cited
US3393060A
Cited
US3804645A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |