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Patent US3697390A successfully refreshed from Google Patents.
US3697390A
Expired / Lapsed
US
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Electrodeposition of metallic boride coatings
Assignee: United States Department of the Interior
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Filing: 1969-04-14
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Granted: 1972-10-10
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Expires: 1989-04-14
Abstract
Abstract PLATINGS OF TITANIUM, ZIRCONIUM AND HAFNIUM BORIDES ARE PRODUCED ON SUBSTRATE MATERIALS BY ELECTRODEPOSITION FROM A FUSED, BORATE-TYPE BATH.
Inventors
- 👤 Frank X Mccawley
- 👤 Charlie Wyche
- 👤 David Schlain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:14
CPC Classifications
C; C25; C25D; C25D9/00; C25D9/04; C25D9/08
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |