Subodh Kumar Das

US Patent:

20090028746, Jan 29, 2009

Filed:

Jul 21, 2008

Appl. No.:

12/220041

Inventors:

Gyan Jha - Louisville KY, US
Frank R. Cannova - Huntington Beach CA, US
Subodh K. Das - Lexington KY, US
Barry A. Sadler - Kangaroo Ground, AU

International Classification:

C22C 21/06
C25C 3/36
C22C 21/00
B21B 1/46
C25C 3/06

US Classification:

420532, 205363, 205347, 295277

Abstract:

A series of inventions leading to the production of specific aluminum alloys (especially aluminum beverage can sheet product) through novel approach of introducing, selectively partitioning and managing alloying elements. This invention also enables manufacturing practices to enhance the performance characteristics of aluminum alloys produced. The selected elements can be derived from carbon anodes made from calcined petroleum coke with high metallic contents (such as nickel and vanadium). Alloying elements can also be introduced and managed from other raw material such as alumina and bath constituents added during aluminum smelting process. Additionally, cell operating parameters, such as cell temperature, off gas flow rate, aluminum tapping rate and impurity partition characteristics can also be manipulated to produce low cost aluminum alloys and facilitate utilization of high metallic content calcined petroleum coke.

US Patent:

20130220823, Aug 29, 2013

Filed:

Aug 27, 2012

Appl. No.:

13/595589

Inventors:

Gyan Jha - Louisville KY, US
Frank R. Cannova - Huntington Beach CA, US
Subodh K. Das - Lexington KY, US
Barry A. Sadler - Kangaroo Ground, AU

International Classification:

C25C 3/06
C25C 3/26

US Classification:

205364

Abstract:

A series of inventions leading to the production of specific aluminum alloys (especially aluminum beverage can sheet product) through novel approach of introducing, selectively partitioning and managing alloying elements. This invention also enables manufacturing practices to enhance the performance characteristics of aluminum alloys produced. The selected elements can be derived from carbon anodes made from calcined petroleum coke with high metallic contents (such as nickel and vanadium). Alloying elements can also be introduced and managed from other raw material such as alumina and bath constituents added during aluminum smelting process. Additionally, cell operating parameters, such as cell temperature, off gas flow rate, aluminum tapping rate and impurity partition characteristics can also be manipulated to produce low cost aluminum alloys and facilitate utilization of high metallic content calcined petroleum coke.

US Patent:

51044595, Apr 14, 1992

Filed:

Feb 19, 1991

Appl. No.:

7/656528

Inventors:

Lian Chen - Louisville KY
James G. Morris - Lexington KY
Subodh K. Das - Prospect KY

Assignee:

Atlantic Richfield Company - Los Angeles CA

International Classification:

C22F 100

US Classification:

148 115A

Abstract:

Methods for the improvement of mechanical properties of aluminum can stock materials. In one method, an aluminum alloy is cast into an ingot, heated at an elevated temperature to homogenize the alloy, hot rolled at an elevated temperature to form hot band material and cold rolled to final gauge. After the heating step, the alloy is hot rolled immediately to minimize the cooling of the alloy between the heating and hot rolling steps.

US Patent:

20180135193, May 17, 2018

Filed:

Dec 20, 2017

Appl. No.:

15/847989

Inventors:

- St. Louis MO, US
Subodh Das - Lexington KY, US
Mark A. Gesing - Hamilton, CA

International Classification:

C25C 7/08
C25C 3/04
C22C 1/02
C04B 35/581
C25C 3/00
C22B 26/22
C25C 7/00
C25C 3/36
C04B 35/65
C04B 35/638
C04B 35/634

Abstract:

The invention comprises methods and apparatuses for the electrorefining of Mg from Al or Mg alloy scrap. The invention utilizes the density and charge features of Mg present in a melted alloy to continuously extract Mg and Mg alloys from a melted Al alloy feed.

US Patent:

20150225864, Aug 13, 2015

Filed:

Feb 13, 2015

Appl. No.:

14/621759

Inventors:

- Lexington KY, US
Subodh Das - Lexington KY, US
Mark Adam Gesing - Hamilton, CA

International Classification:

C25C 7/08
B22F 3/12
C25C 3/04
C04B 35/581
C04B 35/58
C25C 3/00
C22B 26/22
B22F 3/26

Abstract:

The invention comprises methods and apparatuses for the electrorefining of Mg from Al or Mg alloy scrap. The invention utilizes the density and charge features of Mg present in a melted alloy to continuously extract Mg and Mg alloys from a melted Al alloy feed.