US3029559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass-metal seals
Assignee: AT&T Inc
•
Filing: 1956-07-25
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Granted: 1962-04-17
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Expires: 1976-07-25
Abstract
No abstract record available.
Inventors
- 👤 Arnold W Treptow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:55
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; C03C27/046; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12049; Y10T428/12056; Y10T428/12063; Y10T428/12493; Y10T428/12535; Y10T428/12597; Y10T428/12771; Y10T428/12861; Y10T428/12937
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
AN IMPROVED GLASS-TO-METAL SEAL CONSISTING OF A METAL SUBSTRATE, A LAYER OF FINELY-DIVIDED METAL PARTICLES SINTERED ON THE SURFACE OF SAID SUBSTRATE, SAID PARTICLES BEING BETWEEN 1 MICRON AND 40 MICRONS IN SIZE, AND GLASS FUSED TO SAID SUBSTRATE AND THE SINTERED PARTICLES ON THE SURFACE OF SAID SUBSTRATE.
Claim 2
Dependent Claim
49 words
AN IMPROVED GLASS-TO-METAL SEAL CONSISTING OF A METAL SUBSTRATE, A LAYER OF FINELY-DIVIDED METAL PARTICLES SINTERED ON THE SURFACE OF SAID SUBSTRATE, SAID PARTICLES BEING BETWEEN 1 MICRON AND 40 MICRONS IN SIZE, AND GLASS FUSED TO SAID SUBSTRATE AND THE SINTERED PARTICLES ON THE SURFACE OF SAID SUBSTRATE.
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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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |