US2692853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and composition for electropolishing stainless iron and steel
Assignee: Shawinigan Chemicals Ltd
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Filing: 1951-11-03
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Granted: 1954-10-26
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Expires: 1971-11-03
Abstract
No abstract record available.
Inventors
- 👤 Terry S Gamble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:11
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/16; C25F3/22; C25F3/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
AN ELECTROLYTE FOR USE IN THE ELECTROLYTIC POLISHING OF STAINLESS IRON AND STEEL ARTICLES WHEREIN THE ARTICLE IS EMPLOYED AS AN ANODE, SAID ELECTROLYTE CONSISTING ESSENTIALLY OF AN ACID OF THE GROUP CONSISTING OF SULFURIC AND ORTHOPHOSPHORIC ACIDS AND MIXTURE THEREOF, WATER, AND AN AMOUNT OF A MATERIAL OF THE GROUP CONSISTING OF HUMIC ACID AND ALKALINE SALTS OF HUMIC ACID EFFECTIVE TO PRODUCE A BRIGHT POLISH OVER A WIDER RANGE OF ACID CONCENTRATION, TEMPERATURE, AND CURRENT DENSITY THAN IN THE ABSENCE OF THE MEMBER OF SAID GROUP.
Claim 2
Dependent Claim
88 words
AN ELECTROLYTE FOR USE IN THE ELECTROLYTIC POLISHING OF STAINLESS IRON AND STEEL ARTICLES WHEREIN THE ARTICLE IS EMPLOYED AS AN ANODE, SAID ELECTROLYTE CONSISTING ESSENTIALLY OF AN ACID OF THE GROUP CONSISTING OF SULFURIC AND ORTHOPHOSPHORIC ACIDS AND MIXTURE THEREOF, WATER, AND AN AMOUNT OF A MATERIAL OF THE GROUP CONSISTING OF HUMIC ACID AND ALKALINE SALTS OF HUMIC ACID EFFECTIVE TO PRODUCE A BRIGHT POLISH OVER A WIDER RANGE OF ACID CONCENTRATION, TEMPERATURE, AND CURRENT DENSITY THAN IN THE ABSENCE OF THE MEMBER OF SAID GROUP.
References Cited (Backward Citations)
DE682248C
Cited
US2315695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-10-25 | 1958-04-26 | 1958-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-25 | 1962-04-26 | 1962-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-25 | 1966-04-26 | 1966-10-26 | $7700.00 | Window Closed / Lapsed |