US3250631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass sealing compositions and method for modifying same
Assignee: OWENS ILLINOIS Co
•
Filing: 1962-12-26
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Granted: 1966-05-10
•
Expires: 1982-12-26
Abstract
No abstract record available.
Inventors
- 👤 Kenneth G Lusher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:42
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/003; C04B37/005; C03; C03C; C03C10/00; C03C10/0018; C03C10/0027; C03C10/0054; C03C27/00; C03C8/00; C03C8/24; C03C8/245; C04B2237/00; C04B2237/02; C04B2237/10; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/341; C04B2237/50; C04B2237/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A THERMALLY DEVITRIFLABLE FUSION-TYPE GLASS SEALING COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF A COMMINUTED THERMALLY DEVITRIFIABLE SOLDER SEALING GLASS HAVING A HIGH THERMAL COEFFICIENT OF EXPANSION AND A COMMINUTED INERT REFRACTORY METAL OXIDE HAVING A COEFFICIENT OF EXPANSION LOWER THAN THAT OF SAID SOLDER SEALING GLASS AND OF SAID GLASS SEALING COMPOSITION AFTER DEVITRIFICATION OF SAID COMPOSITION, SAID REFRACTORY METAL OXIDE BEING PRESENT IN AN AMOUNT SUFFICIENT TO LOWER THE COEFFICIENT OF EXPANSION OF SAID SOLDER SEALING GLASS AFTER DIVITRIFICATION TO A DESIRED LEVEL.
Claim 2
Dependent Claim
85 words
A THERMALLY DEVITRIFLABLE FUSION-TYPE GLASS SEALING COMPOSITION CONSISTING ESSENTIALLY OF A MIXTURE OF A COMMINUTED THERMALLY DEVITRIFIABLE SOLDER SEALING GLASS HAVING A HIGH THERMAL COEFFICIENT OF EXPANSION AND A COMMINUTED INERT REFRACTORY METAL OXIDE HAVING A COEFFICIENT OF EXPANSION LOWER THAN THAT OF SAID SOLDER SEALING GLASS AND OF SAID GLASS SEALING COMPOSITION AFTER DEVITRIFICATION OF SAID COMPOSITION, SAID REFRACTORY METAL OXIDE BEING PRESENT IN AN AMOUNT SUFFICIENT TO LOWER THE COEFFICIENT OF EXPANSION OF SAID SOLDER SEALING GLASS AFTER DIVITRIFICATION TO A DESIRED LEVEL.
References Cited (Backward Citations)
US2675497A
Cited
US2863782A
Cited
US2889952A
Cited
US2969293A
Cited
US3037828A
Cited
US3061664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |