US3674517A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solution for depositing transparent metal films
Assignee: PPG Industries Inc
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Filing: 1970-07-23
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Granted: 1972-07-04
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Expires: 1990-07-23
Abstract
Abstract AN AQUEOUS CHEMICAL FILMING COMPOSITION THAT DEPOSITS A TRANSPARENT COATING HAVING A METALLIC LUSTER AT A RATE WHICH IS RELATIVELY RAPID AND THEN RELATIVELY SLOWER; AND WHICH EFFECTIVELY CEASES TO PRODUCE COATING WHILE THE COATING REMAINS TRANSPARENT IS DISCLOSED.
Inventors
- 👤 Richard G Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:02
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/52; C03; C03C; C03C17/00; C03C17/06; C03C17/10; C23C18/1601; C23C18/1633; C23C18/1655; C23C18/1658; C23C18/18; C23C18/1851; C23C18/1872; C23C18/1886; C23C18/1889; C23C18/31; C23C18/32; C23C18/34; C23C18/48; C23C18/50; H; H01; H01B; H01B1/00
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |