Patents by Inventor Viktor P Balema

Viktor P Balema 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).

  • Solvent-free mechanochemical preparation of phosphonium salts, phosphorus ylides, and olefins
    Patent number: 7105714
    Abstract: The present invention provides a method of preparing a phosphonium salt of the formula [R1R2R3P—CR4R5R6]X, comprising ball-milling a phosphine of the formula R1R2R3P with a compound of the formula XCR4R5R6; a method of preparing a phosphorus ylide of the formula R1R2R3P?CR4R5, comprising ball-milling a phosphonium salt of the formula [R1R2R3P—HCR4R5]X in the presence of a base; and a method of preparing an olefin of the formula R4R5C?CR7H or R4R5C?CR7R8, comprising ball-milling a phosphorus ylide of the formula R1R2R3P?CR4R5 with a compound of the formula R7C(O)H or R7C(O)R8. The inventive method produces phosphonium salts and phosphorus ylides by mechanical processing solid reagents under solvent-free conditions.
    Type: Grant
    Filed: December 22, 2003
    Date of Patent: September 12, 2006
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Vitalij K Pecharsky, Viktor P Balema, Jerzy W Wiench, Marek Pruski
  • Solvent-free mechanochemical preparation of phosphonium salts, phosphorus ylides, and olefins
    Publication number: 20040260128
    Abstract: The present invention provides a method of preparing a phosphonium salt of the formula [R1R2R3P—CR4R5R6]X, comprising ball-milling a phosphine of the formula R1R2R3P with a compound of the formula XCR4R5R6; a method of preparing a phosphorus ylide of the formula R1R2R3P═CR4R5, comprising ball-milling a phosphonium salt of the formula [R1R2R3P—HCR4R5]X in the presence of a base; and a method of preparing an olefin of the formula R4R5C═CR7H or R4R5C═CR7R8, comprising ball-milling a phosphorus ylide of the formula R1R2R3P═CR4R5 with a compound of the formula R7C(O)H or R7C(O)R8. The inventive method produces phosphonium salts and phosphorus ylides by mechanical processing solid reagents under solvent-free conditions.
    Type: Application
    Filed: December 22, 2003
    Publication date: December 23, 2004
    Applicant: Iowa State University Research Foundation, Inc.
    Inventors: Vitalij K. Pecharsky, Viktor P. Balema, Jerzy W. Wiench, Marek Pruski
  • Method of production of pure hydrogen near room temperature from aluminum-based hydride materials
    Patent number: 6773692
    Abstract: The present invention provides a cost-effective method of producing pure hydrogen gas from hydride-based solid materials. The hydride-based solid material is mechanically processed in the presence of a catalyst to obtain pure gaseous hydrogen. Unlike previous methods, hydrogen may be obtained from the solid material without heating, and without the addition of a solvent during processing. The described method of hydrogen production is useful for energy conversion and production technologies that consume pure gaseous hydrogen as a fuel.
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: August 10, 2004
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Vitalij K. Pecharsky, Viktor P. Balema
  • Solvent-free mechanochemical preparation of phosphonium salts, phosphorus ylides, and olefins
    Patent number: 6730812
    Abstract: The present invention provides a method of preparing a phosphonium salt of the formula [R1R2R3P—CR4R5R6]X, comprising ball-milling a phosphine of the formula R1R2R3P with a compound of the formula XCR4R5R6; a method of preparing a phosphorus ylide of the formula R1R2R3P═CR4R5, comprising ball-milling a phosphonium salt of the formula [R1R2R3P—HCR4R5]X in the presence of a base; and a method of preparing an olefin of the formula R4R5C═CR7H or R4R5C═CR7R8, comprising ball-milling a phosphorus ylide of the formula R1R2R3P═CR4R5 with a compound of the formula R7C(O)H or R7C(O)R8. The inventive method produces phosphonium salts and phosphorus ylides by mechanical processing solid reagents under solvent-free conditions.
    Type: Grant
    Filed: February 5, 2003
    Date of Patent: May 4, 2004
    Assignee: Iowa State University Research Foundation, Inc.
    Inventors: Vitalij K. Pecharsky, Viktor P. Balema, Jerzy W. Wiench, Marek Pruski
  • Solvent-free mechanochemical preparation of phosphonium salts, phosphorus ylides, and olefins
    Publication number: 20030176740
    Abstract: The present invention provides a method of preparing a phosphonium salt of the formula [R1R2R3P—CR4R5R6]X, comprising ball-milling a phosphine of the formula R1R2R3P with a compound of the formula XCR4R5R6; a method of preparing a phosphorus ylide of the formula R1R2R3P═CR4R5, comprising ball-milling a phosphonium salt of the formula [R1R2R3P—HCR4R5]X in the presence of a base; and a method of preparing an olefin of the formula R4R5C═CR7H or R4R5C═CR7R8, comprising ball-milling a phosphorus ylide of the formula R1R2R3P═CR4R5 with a compound of the formula R7C(O)H or R7C(O)R8. The inventive method produces phosphonium salts and phosphorus ylides by mechanical processing solid reagents under solvent-free conditions.
    Type: Application
    Filed: February 5, 2003
    Publication date: September 18, 2003
    Applicant: Iowa State University Research Foundation, Inc.
    Inventors: Vitalij K. Pecharsky, Viktor P. Balema, Jerzy W. Wiench, Marek Pruski
  • Method of production of pure hydrogen near room temperature from aluminum-based hydride materials
    Publication number: 20030026757
    Abstract: The present invention provides a cost-effective method of producing pure hydrogen gas from hydride-based solid materials. The hydride-based solid material is mechanically processed in the presence of a catalyst to obtain pure gaseous hydrogen. Unlike previous methods, hydrogen may be obtained from the solid material without heating, and without the addition of a solvent during processing. The described method of hydrogen production is useful for energy conversion and production technologies that consume pure gaseous hydrogen as a fuel.
    Type: Application
    Filed: June 12, 2002
    Publication date: February 6, 2003
    Applicant: Iowa State University Research Foundation, Inc.
    Inventors: Vitalij K. Pecharsky, Viktor P. Balema