Patents by Inventor Abdul Malek

Abdul Malek 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: 6490875
    Abstract: A regenerative adsorption process and a multi-reactor regenerative adsorption chiller assembly including a condenser adapted to receive a coolant from a source; an evaporator connected to the condenser to provide a refrigerant circuit; a plurality of reactors, each being able to operate in adsorption and desorption modes and having a coolant inlet to directly or indirectly receive coolant when operating in adsorption mode before, after or simultaneous with the condenser, and a waste heat inlet for directly or indirectly receiving waste heat from a waste heat source when operating in desorption mode; and control means for controlling said plurality of reactors such that each reactor alternately operates in adsorption and desorption modes for substantially identical time intervals, and such that each reactor has an equal chance of being the first reactor to receive the coolant when operating in adsorption mode, and the waste heat from the waste heat source when operating in desorption mode.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: December 10, 2002
    Assignee: The National University of Singapore
    Inventors: Hui Tong Chua, Kim Choon Ng, Abdul Malek, Takao Kashiwagi, Atsushi Akisawa, Bidyut Baran Saha
  • Publication number: 20020053217
    Abstract: A regenerative adsorption process and a multi-reactor regenerative adsorption chiller assembly including a condenser adapted to receive a coolant from a source; an evaporator connected to the condenser to provide a refrigerant circuit; a plurality of reactors, each being able to operate in adsorption and desorption modes and having a coolant inlet to directly or indirectly receive coolant when operating in adsorption mode before, after or simultaneous with the condenser, and a waste heat inlet for directly or indirectly receiving waste heat from a waste heat source when operating in desorption mode; and control means for controlling said plurality of reactors such that each reactor alternately operates in adsorption and desorption modes for substantially identical time intervals, and such that each reactor has an equal chance of being the first reactor to receive the coolant when operating in adsorption mode, and the waste heat from the waste heat source when operating in desorption mode.
    Type: Application
    Filed: June 8, 2001
    Publication date: May 9, 2002
    Inventors: Hui Tong Chua, Kim Choon Ng, Abdul Malek, Takao Kashiwagi, Atsushi Akisawa, Bidyut Baran Saha
  • Patent number: 5512491
    Abstract: A method for ultra-analysis of water for trace impurities. An effective trapping media functions by binding gels that carry ultratrace analytes on their surfaces.
    Type: Grant
    Filed: October 21, 1993
    Date of Patent: April 30, 1996
    Assignee: Areco Canada Inc.
    Inventors: K. Anwer Mehkeri, Abdul Malek, Bryan R. Hollebone, Xinqiang Zhou
  • Patent number: 5380928
    Abstract: The invention relates to a method for the high yield production of dicarboxylic acids such as azelaic acid by the controlled two step oxidation of an unsaturated hydrocarbon substrate. The method consists of two steps and involves the derivatization of the unsaturated substrate which locks and directs oxidative cleavage at the site of unsaturation to yield the desired acids.
    Type: Grant
    Filed: August 18, 1993
    Date of Patent: January 10, 1995
    Assignee: Synergistics Industries, Inc.
    Inventors: Abdul Malek, Clevys J. Monasterios, G. Ronald Brown, Ved P. Gupta
  • Patent number: 5235070
    Abstract: A method for reducing the formation of dust produced by solid aromatic anhydrides, and aromatic anhydride compositions that have a reduced tendency to emit aromatic anhydride dust, are disclosed. The method comprises treating the aromatic anhydride with low levels of suitable organic compounds.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: August 10, 1993
    Assignee: Amoco Corporation
    Inventors: Michael R. Green, Chang M. Park, Adel B. Abdul-Malek
  • Patent number: 4946970
    Abstract: There is provided a trimellitic anhydride composition having a reduced tendency to form trimellitic anhydride dust which composition comprises trimellitic anhydride treated with at least one organic compound wherein the organic compound is both liquid and substantially non-volatile at normal ambient temperatures and pressures. There is also provided a method for suppressing dust emitted from trimellitic anhydride which method comprises treating the trimellitic anhydride with the aforementioned organic compounds.
    Type: Grant
    Filed: December 2, 1988
    Date of Patent: August 7, 1990
    Assignee: Amoco Corporation
    Inventors: Michael R. Green, Chang M. Park, Adel B. Abdul-Malek
  • Patent number: 4444956
    Abstract: A process for the preparation of oil-soluble Mannich condensation products wherein an amine is prereacted with a sulfonic acid or ammonium sulfonate, and the prereaction product is reacted with an aldehyde and an oxidized olefin polymer.
    Type: Grant
    Filed: November 8, 1982
    Date of Patent: April 24, 1984
    Assignee: Standard Oil Company (Indiana)
    Inventors: John G. Schaffhausen, Adel B. Abdul-Malek
  • Patent number: 4255160
    Abstract: Crude oil, residuum, and vacuum gas oil containing an effective amount of a linear alpha olefin substituted succinate diester of a linear primary monohydric alcohol.
    Type: Grant
    Filed: March 9, 1979
    Date of Patent: March 10, 1981
    Assignee: Standard Oil Company (Indiana)
    Inventors: Peter G. Pappas, Adel B. Abdul-Malek
  • Patent number: 4149980
    Abstract: Ashless lubricant additive compositions which contain a small but effective amount of overbased aminoguanidine sulfonate, sufficient to impart acid neutralization, antitrust, anticorrosive, dispersant, and detergent properties, are formed by reacting greater than about one mole of aminoguanidine with one mole of a hydrocarbon sulfonic acid.
    Type: Grant
    Filed: June 27, 1977
    Date of Patent: April 17, 1979
    Assignee: Standard Oil Company (Indiana)
    Inventors: A. Abdul-Malek, C. G. Brannen, W. C. Edmisten