Patents by Inventor Jawahar Chunilal Parekh

Jawahar Chunilal Parekh 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).

  • Amino acid free stable aluminum/zirconium antiperspirant solution
    Patent number: 7144571
    Abstract: An amino acid free stable aluminum zirconium polyhydric alcohol aqueous solution having a high anhydrous antiperspirant solid concentration and a high percentage of low molecular weight aluminum species, i.e., containing 60% or more of band IV peak area based on high pressure liquid chromatography, is prepared by adding a zirconium salt to an aqueous polyhydric alcohol solution of a basic aluminum chloride.
    Type: Grant
    Filed: March 22, 2005
    Date of Patent: December 5, 2006
    Assignee: Reheis, Inc.
    Inventors: Zijun Li, Jawahar Chunilal Parekh
  • Amino acid free stable aluminum/zirconium antiperspirant solution
    Patent number: 6960338
    Abstract: An amino acid free stable aluminum zirconium polyhydric alcohol aqueous solution having a high anhydrous antiperspirant solid concentration and a high percentage of low molecular weight aluminum species, i.e., containing 60% or more of band IV peak area based on high pressure liquid chromatography, is prepared by adding a zirconium salt to an aqueous polyhydric alcohol solution of a basic aluminum chloride.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: November 1, 2005
    Assignee: Reheis, Inc.
    Inventors: Zijun Li, Jawahar Chunilal Parekh
  • Amino acid free stable aluminum / zirconium
    Publication number: 20040001795
    Abstract: An amino acid free stable aluminum zirconium polyhydric alcohol aqueous solution having a high anhydrous antiperspirant solid concentration and a high percentage of low molecular weight aluminum species, i.e., containing 60% or more of band IV peak area based on high pressure liquid chromatography, is prepared by adding a zirconium salt to an aqueous polyhydric alcohol solution of a basic aluminum chloride.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 1, 2004
    Inventors: Zijun Li, Jawahar Chunilal Parekh
  • Enhanced efficacy aluminum-zirconium antiperspirants and methods for making
    Patent number: 6451296
    Abstract: Stable aluminum-zirconium antiperspirant compositions in polyhydric alcohol solution with enhanced efficacy were made by direct reaction in aqueous solution of a soluble aluminum salt, a zirconium compound, a polyhydric alcohol, aluminum metal and optionally an amino acid buffer, and maintaining the solution at 100-140° C. to form a 20-45% by weight concentration of aluminum-zirconium complexes on an anhydrous basis. A solid product can be obtained by spray drying the product solution.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: September 17, 2002
    Inventors: Zijun Li, Jawahar Chunilal Parekh
  • Stable suspensions of solids in metal salt solutions for use in water treatment
    Patent number: 6165369
    Abstract: Stable suspensions can be made from acidic metal salt solutions and finely divided acid-insoluble solid particles that have a particle size of less than twenty-five microns, preferably less than ten microns, and most preferably, about one micron. These suspensions can be used to treat surface waters to remove organic materials therefrom. The suspension forms a floc that includes the solid particles and organic materials, which floc rapidly settles out of solution, leaving purified water as the supernatant liquid.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: December 26, 2000
    Assignee: General Chemical Corporation
    Inventors: James Nelson Tanis, Jawahar Chunilal Parekh
  • Antiperspirant compositions for aerosol formulations
    Patent number: 6024945
    Abstract: The formation of toxic compounds such as acetaldehyde and monochlorofluoroethane generated by aerosol antiperspirant mixtures of ACH and 1,1-difluoroethane can be substantially reduced by the addition of one or more additives. Such additives include amino acids, their alkali metal, alkaline earth, ammonium and hydroxy aluminum salts, metal glycinates, hydrotalcite or analogues thereof, and complex aluminum buffering agents. The resultant mixtures are stable for at least two years under ambient storage conditions.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: February 15, 2000
    Assignee: Reheis, Inc.
    Inventor: Jawahar Chunilal Parekh