Patent US2849349A successfully refreshed from Google Patents.
US2849349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the electrolytic deposition of aluminium
Assignee: ZIEGLER AG
•
Filing: 1955-07-11
•
Granted: 1958-08-26
•
Expires: 1975-07-11
Abstract
No abstract record available.
Inventors
- 👤 Ziegler Karl
- 👤 Lehmkuhl Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:29
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/42; C25D3/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
A PROCESS FOR THE ELECTROLYTIC DEPOSITING OF ALUMINUM UPON AN ELECTRICALLY CONDUCTIVE SURFACE WHICH COMPRISES PASSING AN ELECTRIC CURRENT BETWEEN AN ANODE AND SAID ELECTRICALLY CONDUCTIVE SURFACE AS A CATHODE THROUGH AN ELECTROLYTE WHICH CONSISTS ESSENTIALLY OF A HOMOGENEOUS MELT OF A TRUE ORGANIC COMPOUND OF ALUMINUM OF THE GENERAL FORMULA AIR(R'')2 IN WHICH R IS AN ALKYL GROUP AND R'' IS A SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF ALKYL, HYDROGEN AND HALOGEN, IN COMBINATION WITH A COMPLEX COMPOUND OF SUCH ALUMINUM COMPOUND AIR(R'')2 WITH A COMPOUND OF THE FORMULA MER'' IN WHICH ME IS SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND QUATERNARY AMMONIUM RADICALS AND R'' HAS THE SAME SIGNIFICANCE AS ABOVE, SAID COMPLEX COMPOUND BEING OF THE FORMULA MER''AIR(R''2) IN WHICH ME R AND R'' HAVE THE SAME SIGNIFICANCE AS ABOVE, THE QUANTITY OF SAID ORGNAIC COMPOUND OF ALUMINUM OF THE FORMULA AIR(R'')2 IN SAID HOMOGENEOUS MELT BEING IN EXCESS OF THAT CONTAINED IN SAID COMPLEX COMPOUND OF THE FORMULA MER''AIR(R'')2.
Claim 2
Dependent Claim
166 words
A PROCESS FOR THE ELECTROLYTIC DEPOSITING OF ALUMINUM UPON AN ELECTRICALLY CONDUCTIVE SURFACE WHICH COMPRISES PASSING AN ELECTRIC CURRENT BETWEEN AN ANODE AND SAID ELECTRICALLY CONDUCTIVE SURFACE AS A CATHODE THROUGH AN ELECTROLYTE WHICH CONSISTS ESSENTIALLY OF A HOMOGENEOUS MELT OF A TRUE ORGANIC COMPOUND OF ALUMINUM OF THE GENERAL FORMULA AIR(R'')2 IN WHICH R IS AN ALKYL GROUP AND R'' IS A SUBSTITUENT SELECTED FROM THE GROUP CONSISTING OF ALKYL, HYDROGEN AND HALOGEN, IN COMBINATION WITH A COMPLEX COMPOUND OF SUCH ALUMINUM COMPOUND AIR(R'')2 WITH A COMPOUND OF THE FORMULA MER'' IN WHICH ME IS SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND QUATERNARY AMMONIUM RADICALS AND R'' HAS THE SAME SIGNIFICANCE AS ABOVE, SAID COMPLEX COMPOUND BEING OF THE FORMULA MER''AIR(R''2) IN WHICH ME R AND R'' HAVE THE SAME SIGNIFICANCE AS ABOVE, THE QUANTITY OF SAID ORGNAIC COMPOUND OF ALUMINUM OF THE FORMULA AIR(R'')2 IN SAID HOMOGENEOUS MELT BEING IN EXCESS OF THAT CONTAINED IN SAID COMPLEX COMPOUND OF THE FORMULA MER''AIR(R'')2.
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) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |