US3645761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass solder
Assignee: Nippon Electric Glass Co Ltd
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Filing: 1969-11-24
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Granted: 1972-02-29
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Expires: 1989-11-24
Abstract
Abstract A glass solder composition comprising a mixture of a major portion of lead oxide, bismuth trioxide, boron trioxide, zinc oxide, silicon dioxide, and a minor amount of additional oxide chosen from one or more of the group of sodium monoxide, potassium monoxide, lithium oxide and barium oxide.
Inventors
- 👤 Susumu Kawamura
- 👤 Fumio Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:35
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/06; C03C27/10; C03C10/00; C03C10/0054; C03C8/00; C03C8/24; C03C8/245
Claims Analysis
Total Claims: 0
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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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |