US4073657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass for semiconductors
Assignee: Motorola Solutions Inc
•
Filing: 1976-07-16
•
Granted: 1978-02-14
•
Expires: 1996-07-16
Abstract
Abstract An insulating or passivation glass consisting of 36 to 40 volume percent zircon and the balance is a base glass consisting essentially of 2 to 6 percent-SiO2, 70 to 75 percent-PbO 5 to 9 percent-ZnO, 0 to 4 percent-BaO, 2 to 5 percent-CdO, 0 to 2 percent-TiO2 and 10 to 14 percent-B2O3, all of said percentages being weight percent.
Inventors
- 👤 Earl K. Davis
- 👤 William O. Rogers
- 👤 Duane C. Silvis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:24
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/40; H10W74/43; C; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/07; C03C3/072; C03C3/074; C03C3/0745; C03C4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
An insulating and passivating glass and zircon composition consisting of 36 to 40 volume percent of zircon of maximum particle size up to 5 microns and the balance a base glass of particle size less than 44 microns wherein said base glass consists of 3 percent-SiO 2 , 73 percent-PbO, 6 percent-ZnO, 3 percent-BaO, 2 percent-CdO, 1 percent-TiO 2 and 12 percent-B 2 O 3 .
Claim 2
Dependent Claim
66 words
An insulating and passivating glass and zircon composition consisting of 36 to 40 volume percent of zircon of maximum particle size up to 5 microns and the balance a base glass of particle size less than 44 microns wherein said base glass consists of 3 percent-SiO 2 , 73 percent-PbO, 6 percent-ZnO, 3 percent-BaO, 2 percent-CdO, 1 percent-TiO 2 and 12 percent-B 2 O 3 .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-13 | 1981-08-15 | 1982-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-13 | 1985-08-15 | 1986-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-13 | 1989-08-15 | 1990-02-14 | $7700.00 | Window Closed / Lapsed |