US2988853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass-to-metal seal
Assignee: Lanteris Space LLC
•
Filing: 1957-08-16
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Granted: 1961-06-20
•
Expires: 1977-08-16
Abstract
No abstract record available.
Inventors
- 👤 Anthony J Certa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:52
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/161; C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; C03C27/046; C23; C23C; C23C8/00; C23C8/06; C23C8/08; C23C8/10; C23D; C23D3/00; H01; H01J; H01J5/00; H01J5/20; H01J5/22; H01J5/26; H10W72/00; H01J2893/00; H01J2893/0033; H01J2893/0037; H01J2893/0041; H01J2893/0043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN THE MANUFACTURE OF STEMS FOR HERMETICALLY SEALED SEMICONDUCTOR DEVICES, OF THE TYPE INCLUDING A NICKEL FERRULE HOUSING AN INSULATING CORE OF VITRIC MATERIAL, THE METHOD WHICH COMPRISES, ELEVATING THE TEMPERATURE OF SAID FERRULE IN AN OXIDIZING ATMOSPHERE TO A VALUE LYING IN THE RANGE ABOVE APPROXIMATELY 1000* C. BUT BELOW THE MELTING POINT OF NICKEL, MAINTAINING SAID FERRULE IN SAID ELEVATED TEMPERATURE RANGE FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE A LAYER OF OXIDE OF PREDETERMINED THICKNESS, LIQUID QUENCHING SAID FERRULE TO COOL IT IN A MANNER PREVENTING FURTHER OXIDATION, AND THEREAFTER COMPLETING THE STEM ASSEMBLY BY HERMETICALLY JOINING SAID VITRIC CORE TO SAID COOLED FERRULE.
Claim 2
Dependent Claim
108 words
IN THE MANUFACTURE OF STEMS FOR HERMETICALLY SEALED SEMICONDUCTOR DEVICES, OF THE TYPE INCLUDING A NICKEL FERRULE HOUSING AN INSULATING CORE OF VITRIC MATERIAL, THE METHOD WHICH COMPRISES, ELEVATING THE TEMPERATURE OF SAID FERRULE IN AN OXIDIZING ATMOSPHERE TO A VALUE LYING IN THE RANGE ABOVE APPROXIMATELY 1000* C. BUT BELOW THE MELTING POINT OF NICKEL, MAINTAINING SAID FERRULE IN SAID ELEVATED TEMPERATURE RANGE FOR A PERIOD OF TIME SUFFICIENT TO PRODUCE A LAYER OF OXIDE OF PREDETERMINED THICKNESS, LIQUID QUENCHING SAID FERRULE TO COOL IT IN A MANNER PREVENTING FURTHER OXIDATION, AND THEREAFTER COMPLETING THE STEM ASSEMBLY BY HERMETICALLY JOINING SAID VITRIC CORE TO SAID COOLED FERRULE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |