US2931142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass-to-glass seal
Assignee: OI Glass Inc
•
Filing: 1956-04-20
•
Granted: 1960-04-05
•
Expires: 1976-04-20
Abstract
No abstract record available.
Inventors
- 👤 Veres Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:12
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/06; C03C27/10; C03C3/00; C03C3/04; C03C3/062; C03C3/07; C03C3/072; C03C3/074; C03C3/0745; C03C3/12; C03C3/14; C03C3/142; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A GLASS BODY FORMED WITH A SEALING SURFACE, SUPERPOSED THIN LAYERS OF GLASS FRIT COVERING SAID SURFACE, SAID LAYERS INCLUDING AN INTERMEDIATE LAYER HAVING SUBSTANTIALLY THE FOLLOWING COMPOSITION: PERCENT PBO 70 B2O3 21 ZNO 9 AND AN OUTER LAYER HAVING SUBSTANTIALLY THE FOLLOWING COMPOSITION: PERCENT PBO 71.1 B2O3 15.40 ZNO 9.47 CUO 1.88 SIO2 2.08 SAID GLASS BODY HAVING A COEFFICIENT OF EXPANSION OF ABOUT 90X10**-7 PER DEGREE C., SAID INTERMEDIATE LAYER HAVING A COEFFICIENT OF EXPANSION OF ABOUT 96X10**-7 PER DEGREE C., AND SAID OUTER LAYER HAVING A COEFFICENT OF EXPANSION OF ABOUT 102X10**-7 PER DEGREE C.
Claim 2
Dependent Claim
98 words
A GLASS BODY FORMED WITH A SEALING SURFACE, SUPERPOSED THIN LAYERS OF GLASS FRIT COVERING SAID SURFACE, SAID LAYERS INCLUDING AN INTERMEDIATE LAYER HAVING SUBSTANTIALLY THE FOLLOWING COMPOSITION: PERCENT PBO 70 B2O3 21 ZNO 9 AND AN OUTER LAYER HAVING SUBSTANTIALLY THE FOLLOWING COMPOSITION: PERCENT PBO 71.1 B2O3 15.40 ZNO 9.47 CUO 1.88 SIO2 2.08 SAID GLASS BODY HAVING A COEFFICIENT OF EXPANSION OF ABOUT 90X10**-7 PER DEGREE C., SAID INTERMEDIATE LAYER HAVING A COEFFICIENT OF EXPANSION OF ABOUT 96X10**-7 PER DEGREE C., AND SAID OUTER LAYER HAVING A COEFFICENT OF EXPANSION OF ABOUT 102X10**-7 PER DEGREE C.
References Cited (Backward Citations)
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |