US3379628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decorative etching of aluminum
Assignee: ConocoPhillips Co
•
Filing: 1965-04-21
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Granted: 1968-04-23
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Expires: 1985-04-21
Abstract
No abstract record available.
Inventors
- 👤 Glen M Burdick
- 👤 James R Dafler
- 👤 Richard L Every
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:30
CPC Classifications
C; C25; C25F; C25F3/00; C25F3/02; C25F3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A METHOD FOR DECORATIVELY ETCHING THE SURFACE OF AN ALUMINUM OBJECT WHICH COMPRISES ANODICALLY ETCHING SAID OBJECT IN AN ELECTROLYTE CONSISTING ESSENTIALLY OF A HOMOGENEOUS MELT OF AN ALUMINUM ALKYL AND A COMPOUND CAPABLE OF FORMING A HEAT-STABLE COMPLEX THEREWITH SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL FLUORIDES, ALKALI METAL CYANIDES, ALKALI METAL AZIDES AND TETRAALKYL AMMONIUM HALIDES UNDER AN INERT GAS ATMOSPHERE TO THE EXTENT THAT A BRIGHT DECORATIVE CRYSTALLINE PLATTERN IS PRODUCED ON THE SURFACE OF THE OBJECT.
Claim 2
Independent Claim
81 words
A METHOD FOR DECORATIVELY ETCHING THE SURFACE OF AN ALUMINUM OBJECT WHICH COMPRISES ANODICALLY ETCHING SAID OBJECT IN AN ELECTROLYTE CONSISTING ESSENTIALLY OF A HOMOGENEOUS MELT OF AN ALUMINUM ALKYL AND A COMPOUND CAPABLE OF FORMING A HEAT-STABLE COMPLEX THEREWITH SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL FLUORIDES, ALKALI METAL CYANIDES, ALKALI METAL AZIDES AND TETRAALKYL AMMONIUM HALIDES UNDER AN INERT GAS ATMOSPHERE TO THE EXTENT THAT A BRIGHT DECORATIVE CRYSTALLINE PLATTERN IS PRODUCED ON THE SURFACE OF THE OBJECT.
References Cited (Backward Citations)
US2849349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-23 | 1971-10-23 | 1972-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-23 | 1975-10-23 | 1976-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-23 | 1979-10-23 | 1980-04-23 | $7700.00 | Window Closed / Lapsed |