US3703386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonflow solder-stop glasses comprising lead-zinc borate and ceramic
Assignee: OI Glass Inc
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Filing: 1970-10-27
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Granted: 1972-11-21
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Expires: 1990-10-27
Abstract
Abstract BY THE ADDITION OF THE REQUISITE AMOUNT OF A POWDERED CERAMIC TO A GLASS COMPOSITION ADAPTED FOR PRINTING UPON A SELECTED PORTION OF A CONDUCTOR WITHIN A MICROELECTRONIC COMPONENT, THE PRINTED GLASS COMPOSITION, WHEN FIRED, IS FOUND TO FORM AN EXCELLENT SOLDER STOP (I.E. MASK) IN THAT ITS FLOW PROPERTIES AT ITS "FIRING TEMPERATURE" ARE SUFFICIENTLY RETARDED FOR GOOD EDGE RESOLUTION DESPITE MULTIPLE REFIRINGS THAT MAY OCCUR DURING THE FORMULATION OF THE ENTIRE MICROELECTRONIC COMPONENT.
Inventors
- 👤 Raymond Louis Dietz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:01
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/22; H05K3/28; B; B23; B23K; B23K35/00; B23K35/22; B23K35/224; C; C03; C03C; C03C10/00; C03C10/0054; H10; H10W; H10W99/00; H05K1/00; H05K1/02; H05K1/03; H05K1/0306; H05K2201/00; H05K2201/01; H05K2201/0137; H05K2201/017
Claims Analysis
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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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |