Patent US3367696A successfully refreshed from Google Patents.
US3367696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal to ceramic seal
Assignee: Engelhard Industries Inc
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Filing: 1965-06-22
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Granted: 1968-02-06
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Expires: 1985-06-22
Abstract
No abstract record available.
Inventors
- 👤 Robert C Langley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:18
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/003; C04B37/005; C04B37/006; C04B2235/00; C04B2235/02; C04B2235/50; C04B2235/54; C04B2235/5418; C04B2235/5436; C04B2235/65; C04B2235/656; C04B2235/6567; C04B2237/00; C04B2237/02; C04B2237/10; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/341; C04B2237/343; C04B2237/345; C04B2237/348; C04B2237/40; C04B2237/405; C04B2237/406; C04B2237/50; C04B2237/62; C04B2237/64; C04B2237/72; C04B2237/76; C04B2237/765; C04B2237/84; C04B2237/88; Y; Y10; Y10S; Y10S228/00; Y10S228/903; Y10S439/00; Y10S439/931; Y10T; Y10T403/00; Y10T403/21; Y10T403/47; Y10T403/477
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |