US3672963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of coating metals with mercury or mercury amalgams
Assignee: Calspan Corp
•
Filing: 1970-05-15
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Granted: 1972-06-27
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Expires: 1990-05-15
Abstract
Abstract A PROCESS FOR WETTING METALS WHEREIN, THE METAL TO BE COATED IS ELECTROPOLISHED IN A SUBSTANTIALLY ALCHOL BATH AND IS BROUGHT IN PROXIMITY WITH A WETTING AGENT; THE POTENTIAL IS REVERSED, CAUSING THE WETTING AGENT TO ADHERE TO THE METAL TO BE COATED.
Inventors
- 👤 Vito A De Palma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:35
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/54; C25D3/22; C25D3/24
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |