Patents by Inventor Arunkumar S. Watwe

Arunkumar S. Watwe has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Mechanical alloying method of titanium-base metals by use of a tin process control agent
    Patent number: 5322666
    Abstract: The invention provides a method of mechanical alloying a titanium-base metal powder. Titanium-base metal powder is provided in a mechanical alloying apparatus. The mechanical alloying apparatus has a controlled atmosphere to prevent excessive oxidation of the titanium-base metal powder. An effective amount of tin process control agent is added to the mechanical alloying apparatus. The mechanical alloying apparatus is operated to weld and fracture the titanium-base metal powder in a manner controlled by the tin process control agent. The controlled welding and fracturing ultimately forms a titanium-base mechanically alloyed powder.
    Type: Grant
    Filed: March 24, 1992
    Date of Patent: June 21, 1994
    Assignee: Inco Alloys International, Inc.
    Inventor: Arunkumar S. Watwe
  • Intermediate temperature aluminum-base alloy
    Patent number: 5171381
    Abstract: The invention comprises an alloy having improved intermediate temperature properties at temperatures up to about 316.degree. C. The alloy contains (by weight percent) about 1-6% X contained as an intermetallic phase in the form of Al.sub.3 X. X is at least one selected from the group consisting of Nb, Ti and Zr. The alloy also contains 0.1-4% strengthener selected from the group consisting of Si and Mg. In addition, the alloy contains about 1-4% C and 0.1-2% O present as aluminum carbides and oxides for grain stabilization.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: December 15, 1992
    Assignee: Inco Alloys International, Inc.
    Inventors: Prakash K. Mirchandani, Arunkumar S. Watwe, Walter E. Mattson
  • High temperature aluminum-base alloy
    Patent number: 5169461
    Abstract: The alloy of the invention has improved intermediate temperature properties at temperatures up to about 482.degree. C. The alloy contains (by weight percent) a total of about 6-12% X contained as an intermetallic phase in the form of Al.sub.3 X. X is selected from the group consisting of Nb, Ti and Zr. The alloy also contains about 0.1-4% strengthener selected from the group consisting of Co, Cr, Mn, Mo, Ni, Si, V, Nb when Nb is not selected as X and Zr when Zr is not selected as X. In addition, the alloy contains about 1-4% C and about 0.1-2% O.
    Type: Grant
    Filed: June 6, 1991
    Date of Patent: December 8, 1992
    Assignee: Inco Alloys International, Inc.
    Inventors: Arunkumar S. Watwe, Prakash K. Mirchandani, Walter E. Mattson