US3726773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface preparation of maraging steel for electroplating
Assignee: United States Department of the Army
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Filing: 1971-08-02
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Granted: 1973-04-10
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Expires: 1991-08-02
Abstract
Abstract AN IMPROVED METHOD OF PREPARING MARAGING STEELS FOR SUBSEQUENT METAL DEPOSITION BY UTILIZATION OF A COMBINED NITRIC ACID PICKEL-MECHANICAL ABRASION DESCALING STEP IN CONJUNCTION WITH A LOW CURRENT DENSITY ACIDIC ELECTROPOLISHING STEP TO PRODUCE A SCALE FREE, ACTIVATED SURFACE FOR DEPOSITION OF A VERY ADHERENT ELECTRODEPOSIT.
Inventors
- 👤 V Lamb
- 👤 J Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:25
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/34; C25D5/36
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |