US3281174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Art of sealing quartz to metal
Assignee: Varian Medical Systems Inc
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Filing: 1963-10-29
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Granted: 1966-10-25
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Expires: 1983-10-29
Abstract
No abstract record available.
Inventors
- 👤 Heil Oskar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:30
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; C03C27/046; H; H01; H01J; H01J5/00; H01J5/20; H01J5/22; H01J5/26; H01J2893/00; H01J2893/0033; H01J2893/0037; H01J2893/0041; H01J2893/0043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A QUARTZ-TO-METAL SEAL COMPRISNG A QUARTZ MEMBER, A MOLYBDENUM METALIZING LAYER BONDED TO THE QUARTZ AND A METAL MEMBER SUBSTANTIALLY THICKER THAN THE METALIZING LAYER BONDED TO THE METALIZING LAYER, SAID METAL MEMBER BEING SELECTED FROM THE GROUP CONSISTING OF COPPPER AND SILVER, AND SAID BOND BETWEEN THE METAL MEMBER AND THE METALIZING LAYER COMPRISING COPPER-SILVER EUTECTIC.
Claim 2
Dependent Claim
57 words
A QUARTZ-TO-METAL SEAL COMPRISNG A QUARTZ MEMBER, A MOLYBDENUM METALIZING LAYER BONDED TO THE QUARTZ AND A METAL MEMBER SUBSTANTIALLY THICKER THAN THE METALIZING LAYER BONDED TO THE METALIZING LAYER, SAID METAL MEMBER BEING SELECTED FROM THE GROUP CONSISTING OF COPPPER AND SILVER, AND SAID BOND BETWEEN THE METAL MEMBER AND THE METALIZING LAYER COMPRISING COPPER-SILVER EUTECTIC.
References Cited (Backward Citations)
US2996401A
Cited
US3115957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |