US3385618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic-to-metal seal
Assignee: American Lava Corp
•
Filing: 1965-05-26
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Granted: 1968-05-28
•
Expires: 1985-05-26
Abstract
No abstract record available.
Inventors
- 👤 Billy M Hargis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:20
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/026; C04B2235/00; C04B2235/65; C04B2235/656; C04B2235/6567; C04B2237/00; C04B2237/02; C04B2237/12; C04B2237/122; C04B2237/125; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/40; C04B2237/405; C04B2237/406; C04B2237/408; C04B2237/50; C04B2237/52; C04B2237/62; C04B2237/64; C04B2237/70; C04B2237/704; C04B2237/706; C04B2237/708; C04B2237/74; C04B2237/76; C04B2237/765; C04B2237/78; C04B2237/84; C04B2237/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
AN ARTICLE COMPRISING: (A) A CERAMIC MEMBER HAVING A CIRCULAR APERTURE THEREIN; (B) A CIRCULAR METAL MEMBER HAVING A DIAMETER SLIGHTLY LESS THAN THE DIAMETER OF SAID APERTURE EXTENDING INTO SAID APERTURE; (C) A METALIZED AREA ENCIRCLING SAID APERTURE ON A SURFACE OF SAID CERAMIC MEMBER APPROXIMATELY PERPENDICULAR TO THE AXIS OF SAID APERTURE; (D) A MENISCUS SHAPED FILLET OF METAL JOINING AND HERMETICALLY SEALING THE PERIPHERY OF SAID METAL MEMBER TO SAID METALIZED AREA.
Claim 2
Dependent Claim
75 words
AN ARTICLE COMPRISING: (A) A CERAMIC MEMBER HAVING A CIRCULAR APERTURE THEREIN; (B) A CIRCULAR METAL MEMBER HAVING A DIAMETER SLIGHTLY LESS THAN THE DIAMETER OF SAID APERTURE EXTENDING INTO SAID APERTURE; (C) A METALIZED AREA ENCIRCLING SAID APERTURE ON A SURFACE OF SAID CERAMIC MEMBER APPROXIMATELY PERPENDICULAR TO THE AXIS OF SAID APERTURE; (D) A MENISCUS SHAPED FILLET OF METAL JOINING AND HERMETICALLY SEALING THE PERIPHERY OF SAID METAL MEMBER TO SAID METALIZED AREA.
References Cited (Backward Citations)
GB903824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |