Patent US3468752A successfully refreshed from Google Patents.
US3468752A
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Hermetically sealed body of ceramic,metal and glass and method therefor
Assignee: NEC Corp
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Filing: 1965-10-12
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Granted: 1969-09-23
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Expires: 1985-10-12
Abstract
No abstract record available.
Inventors
- 👤 Hiroshi Yamamoto
- 👤 Koichi Ikeda
- 👤 Katsuji Minagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:25
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/16; C03; C03C; C03C27/00; C04B37/00; C04B37/02; C04B37/023; C04B37/025; H; H01; H01J; H01J5/00; H01J5/20; C04B2237/00; C04B2237/02; C04B2237/10; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/40; C04B2237/405; C04B2237/50; C04B2237/76; C04B2237/765; C04B2237/80; H01J2893/00; H01J2893/0033; H01J2893/0037; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2642633A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |