US3232855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for electrolytic polishing of aluminum
Assignee: KH Neochem Co Ltd
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Filing: 1962-01-30
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Granted: 1966-02-01
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Expires: 1982-01-30
Abstract
No abstract record available.
Inventors
- 👤 Shibasaki Yasuichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:10
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/16; C25F3/18; C25F3/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
PROCESS FOR EFFECTING "PEAR-LIKE" APPEARANCE ON ALUMINUM WHICH COMPRISES IMMERSING ALUMINUM IN AN ELECTROPOLISHING AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF WATER, AT LEAST 0.1 MOL PER KILOGRAM OF WATER OF ALKALI METAL GLUCONATE AND AT LEAST 1.7 MOL PER KILOGRAM OF WATER OF ALKALI METAL HYDROXIDE, AND ELECTROLYZING, WHEREIN THE ALUMINUM IS THE ANODE, AT A CURRENT DENSITY OF 3 TO 100 AMPERES PER SQUARE DECIMETER UNTIL "PEAR-LIKE" APPEARANCE ON SAID ALUMINUM IS ATTAINED.
Claim 2
Dependent Claim
73 words
PROCESS FOR EFFECTING "PEAR-LIKE" APPEARANCE ON ALUMINUM WHICH COMPRISES IMMERSING ALUMINUM IN AN ELECTROPOLISHING AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF WATER, AT LEAST 0.1 MOL PER KILOGRAM OF WATER OF ALKALI METAL GLUCONATE AND AT LEAST 1.7 MOL PER KILOGRAM OF WATER OF ALKALI METAL HYDROXIDE, AND ELECTROLYZING, WHEREIN THE ALUMINUM IS THE ANODE, AT A CURRENT DENSITY OF 3 TO 100 AMPERES PER SQUARE DECIMETER UNTIL "PEAR-LIKE" APPEARANCE ON SAID ALUMINUM IS ATTAINED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |