Patents by Inventor Mohammad A. Zaidi

Mohammad A. Zaidi 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).

  • Patent number: 5370171
    Abstract: The die casting machine includes a trough containing a supply of molten metal and a feed tube extending into the supply of molten metal in the trough. A flow of molten metal is maintained in the trough past the feed tube independent of the transfer of molten metal through the feed tube. The die casting machine further includes a filtering system.
    Type: Grant
    Filed: September 20, 1993
    Date of Patent: December 6, 1994
    Assignee: Aluminum Company of America
    Inventors: James R. Fields, Men G. Chu, Lawrence W. Cisko, C. Edward Eckert, Thomas R. Hornack, Marshall A. Klingensmith, Richard A. Manzini, M. K. Premkumar, Gerald D. Scott, Mohammad A. Zaidi
  • Patent number: 5219502
    Abstract: A method for making stock shapes from a composition which includes a liquid crystal polymer having a high crystallization temperature, the method including: (a) densifying the composition into a compact; and (b) processing the compact at one or more temperatures below the crystallization temperature using a moderate to high strain rate. For the liquid crystal polymer consisting essentially of p, p' biphenol, p-hydroxybenzoic acid and terephthalic acid monomers and sold under the trademark "XYDAR.RTM.", a preferred embodiment includes heating the compact to one or more temperatures between about 400.degree.-650.degree. F.; and extruding the heated compact in the solid state through a uniform flow-type die at a strain rate of at least about 2 sec.sup.-1.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: June 15, 1993
    Assignee: Aluminum Company of America
    Inventors: Mohammad A. Zaidi, Leo A. Vivola
  • Patent number: 5076344
    Abstract: This invention provides improved casting processes, equipment, and products. The invention is especially advantageous for die casting.
    Type: Grant
    Filed: March 7, 1989
    Date of Patent: December 31, 1991
    Assignee: Aluminum Company of America
    Inventors: James R. Fields, Men G. Chu, Lawrence W. Cisko, C. Edward Eckert, George C. Full, Thomas R. Hornack, Thomas J. Kasun, Jerri F. McMichael, Richard A. Manzini, Janel M. Miller, M. K. Premkumar, Thomas J. Rodjom, Gerald D. Scott, William G. Truckner, Robert C. Wallace, Mohammad A. Zaidi
  • Patent number: 4929285
    Abstract: There is provided a method of fabricating sheet stock having reduced earing during container forming. The method comprises the steps of providing a body of an aluminum base alloy suitable for rolling into sheet stock for forming containers therefrom and hot rolling the body to provide a flat rolled product having a hot rolled structure. The flat rolled product is provided with 5 to 20% of the structure being recrystallized. Thereafter, it is annealed in the temperature range of 400.degree. to 700.degree. F. to provide a fully recrystallized product which is cold rolled to sheet stock having reduced earing during container forming.
    Type: Grant
    Filed: May 4, 1989
    Date of Patent: May 29, 1990
    Assignee: Aluminum Company of America
    Inventor: Mohammad A. Zaidi
  • Patent number: 4891261
    Abstract: A method for making stock shapes from a composition which includes a liquid crystal polymer having a high crystallization temperature, said method comprising: (a) densifying the composition into a compact; and (b) processing the compact at one or more temperatures below the crystallization temperature using a moderate to high strain rate. For the liquid crystal polymer consisting essentially of p, p' biphenol, p-hydroxybenzoic acid and terephthalic acid monomers and sold under the trademark "Xydar.RTM.", a preferred embodiment includes heating the compact to one or more temperatures between about 400.degree.-650.degree. F.; and extruding the heated compact in the solid state through a uniform flow-type die at a strain rate of at least about 2 sec.sup.-1. Thermoplastic stock shapes weighing about four or more pounds and having thicknesses in all dimensions greater than the maximum thickness obtainable through injection molding are also disclosed.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: January 2, 1990
    Assignee: Aluminum Company of America
    Inventors: Mohammad A. Zaidi, Leo A. Vivola