US2511679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ceramic sealing compositions
Assignee: General Electric Co
•
Filing: 1948-08-31
•
Granted: 1950-06-13
•
Expires: 1968-08-31
Abstract
No abstract record available.
Inventors
- 👤 Ludwig E Thiess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:29
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1315; C04B37/00; C04B37/02; C04B37/021; C04B37/04; C04B37/042; C04B2237/00; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/341; C04B2237/40; C04B2237/403; C04B2237/405; C04B2237/406; C04B2237/50; C04B2237/76; C04B2237/765; C04B2237/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
VITREOUS ARITICLE CONSISTING OF A VITRIFIED MIXTURE OF ABOUT 45 TO 55 PARTS OF ZIRCONIUM SILICATE, 8 TO 10 PARTS ZIRCONIA, 30 TO 22 PARTS OF MAGNESIUM SILICATE, 4 TO 5 PARTS OF ALUMINUM SILICATE, 4.5 TO 5.3 PARTS BARIUM OXIDE AND 1 TO 3 PARTS OF CALCIUM-MAGNESIUM-ALUMINUM BORSILICATE GLASS, SAID GLASS HAVING THE COMPOSITION: BORIC OXIDE 33 TO 50%, CALCIUM OXIDE 20 TO 30%, MAGNESTIUM OXIDE 6 TO 2%, ALUMINA 9 TO 8% AND SILICA 27 TO 10%.
Claim 2
Dependent Claim
79 words
VITREOUS ARITICLE CONSISTING OF A VITRIFIED MIXTURE OF ABOUT 45 TO 55 PARTS OF ZIRCONIUM SILICATE, 8 TO 10 PARTS ZIRCONIA, 30 TO 22 PARTS OF MAGNESIUM SILICATE, 4 TO 5 PARTS OF ALUMINUM SILICATE, 4.5 TO 5.3 PARTS BARIUM OXIDE AND 1 TO 3 PARTS OF CALCIUM-MAGNESIUM-ALUMINUM BORSILICATE GLASS, SAID GLASS HAVING THE COMPOSITION: BORIC OXIDE 33 TO 50%, CALCIUM OXIDE 20 TO 30%, MAGNESTIUM OXIDE 6 TO 2%, ALUMINA 9 TO 8% AND SILICA 27 TO 10%.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-12 | 1953-12-12 | 1954-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-12 | 1957-12-12 | 1958-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-12 | 1961-12-12 | 1962-06-13 | $7700.00 | Window Closed / Lapsed |