US3885974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing glass for laser glass
Assignee: Hoya Glass Works Ltd
•
Filing: 1973-07-30
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Granted: 1975-05-27
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Expires: 1993-07-30
Abstract
Abstract A sealing glass for laser glass produced by adding V2O5 0-18 mol.%, Fe2O3 0-18 mol.%, (V2O5+Fe2O3 5-18 mol.%), Co2O3 0-6 mol.% and NiO 0-7 mol.% to a balancing amount of a base glass composed of P2O5 70-30 mol.%, B2O3 0-15 mol.%, Al2O3 0-5 mol.%, (P2O5+B2O3+Al2O3 30-70 mol.%), PbO 0-55 mol.%, Tl2O 0-55 mol.%, ZnO 5-50 mol.%, (PbO+Tl2O 20-55 mol.%; PbO+Tl2O+ZnO 25-60 mol.%) and BaO 0-10 mol.%.
Inventors
- 👤 Yoshiyuki Asahara
- 👤 Tetsuro Izumitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:12
CPC Classifications
C; C03; C03C; C03C8/00; C03C8/24; C03C3/00; C03C3/12; C03C3/16; C03C3/21; C03C4/00; C03C4/08; C03C4/082
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
56 words
A SEALING GLASS FOR LASER GLASS PRODUCED BY ADDING V2O5 0-18 MOL.%, FE2O3 0-18 MOL.%, (V2O5+FE2O3 5-18 MOL.%), CO2O3 0-6 MOL.% AND NIO 0-7 MOL.% TO A BALANCING AMOUNT OF A BASE GLASS CONSISTING OF P2O5 70-30 MOL.%, B2O3 0-15 MOL.%, AL2O3 0-5 MOL.%, (P2O5+B2O3+AL2O3 30-70 MOL.%), PBO 0-55 MOL.%, TL2O 0-55 MOL.%, ZNO 5-50 MOL.%,
Claim 2
Dependent Claim
56 words
A SEALING GLASS FOR LASER GLASS PRODUCED BY ADDING V2O5 0-18 MOL.%, FE2O3 0-18 MOL.%, (V2O5+FE2O3 5-18 MOL.%), CO2O3 0-6 MOL.% AND NIO 0-7 MOL.% TO A BALANCING AMOUNT OF A BASE GLASS CONSISTING OF P2O5 70-30 MOL.%, B2O3 0-15 MOL.%, AL2O3 0-5 MOL.%, (P2O5+B2O3+AL2O3 30-70 MOL.%), PBO 0-55 MOL.%, TL2O 0-55 MOL.%, ZNO 5-50 MOL.%,
Claim 3
Dependent Claim
22 words
A sealing glass for laser glass according to claim 1 which is produced by adding V2O5 in an amount of 5-18 mol.%.
Claim 4
Dependent Claim
32 words
A sealing glass for the laser glass according to claim 1 which consists of: P2O5 45-50 mol.%, PbO 25-35 mol.%; Tl2O 5-15 mol.%; ZnO 5-15 mol.%; Al2O3 1-5 mol.%; V2O5 5-15 mol.%.
References Cited (Backward Citations)
US3126295A
Cited
US2278501A
Cited
US2359789A
Cited
US2381925A
Cited
US3043702A
Cited
US3341453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |