US2607722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic polishing of stainless steel
Assignee: Armco Inc
•
Filing: 1947-01-28
•
Granted: 1952-08-19
•
Expires: 1967-01-28
Abstract
No abstract record available.
Inventors
- 👤 John F Kreml
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:02
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/16; C25F3/22; C25F3/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
IN THE PRODUCTION OF AN ELECTROLYTICALLY POLISHED STAINLESS STEEL PRODUCT, THE ART WHICH COMPRISES, SUBJECTING THE ESSENTIALLY CONSISTMENT IN AN ELECTROLYTIC BATH ESSENTIALLY CONSISTING OF 20% TO 80% GLYCOLIC ACID, 10% TO 60% SULPHURIC ACID AND 2% TO 35% WATER, ALL FIGURES BEING BY WEIGHT AND BASED UPON ANHYDROUS ACIDS.
Claim 2
Dependent Claim
50 words
IN THE PRODUCTION OF AN ELECTROLYTICALLY POLISHED STAINLESS STEEL PRODUCT, THE ART WHICH COMPRISES, SUBJECTING THE ESSENTIALLY CONSISTMENT IN AN ELECTROLYTIC BATH ESSENTIALLY CONSISTING OF 20% TO 80% GLYCOLIC ACID, 10% TO 60% SULPHURIC ACID AND 2% TO 35% WATER, ALL FIGURES BEING BY WEIGHT AND BASED UPON ANHYDROUS ACIDS.
References Cited (Backward Citations)
US2335354A
Cited
US2382865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |