US3669787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible deformable self-supporting glass frit sealing tape
Assignee: 3M Co
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Filing: 1968-08-08
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Granted: 1972-06-13
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Expires: 1988-08-08
Abstract
Abstract SHEET MATERIAL FORMED FROM GLASS FRIT BONDED WITH A MINOR AMOUNT OF HEAT-DEPOLYMERIZABLE RUBBERY POLYMER, PREFERABLY COATED ON ONE OR BOTH SURFACES WITH A SMALL AMOUNT OF SIMILARLY DEPOLYMERIZABLE PRESSURE-SENSITIVE ADHESIVE, CAN BE USED TO JOIN GLASS OR OTHER INORGANIC SUBSTRATES. WHEN SUBJECTED TO HEAT, THE RUBBER DEPOLYMERIZES AND VOLATILIZES AND THE FRIT THEREAFTER FUSES, RESULTING IN A STRONG NONPOROUS INORGANIC SEAL. ONE USE FOR THE PRODUCT IS IN THE FORMATION OF COLOR TV PICTURE TUBES.
Inventors
- 👤 Lew Wallace Cornell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:35
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/06; C03C27/10; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2852; Y10T428/2857; Y10T428/2878; Y10T428/2883; Y10T428/31504; Y10T428/31551; Y10T428/31641
Claims Analysis
Total Claims: 0
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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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |