Patents Represented by Attorney William J. VAN Loo

Find this attorney in the Justia Lawyer Directory

  • Process for the elimination of pollutants in exhaust gases
    Patent number: 3956459
    Abstract: An improved process for oxidation of exhaust gases emanating from internal combustion engines which utilizes a stabilized alumina support containing a uniform distribution of cupric oxide and chromic oxide as a first promoter level and thereover palladium as a second promoter level as well as the process for manufacture thereof are disclosed.
    Type: Grant
    Filed: January 28, 1974
    Date of Patent: May 11, 1976
    Assignee: American Cyanamid Company
    Inventors: Robert Henry Whitman, Edward Leyman
  • Process for reducing nitrogen oxides by treating catalyst support and a metal nitrate with urea and thereafter calcining
    Patent number: 3947379
    Abstract: The use of urea in conjunction with calcination of catalyst materials containing sources of oxides of nitrogen results in suppression of oxides of nitrogen during such calcination and reduces air pollution formerly associated with such calcinations.
    Type: Grant
    Filed: January 22, 1974
    Date of Patent: March 30, 1976
    Assignee: American Cyanamid Company
    Inventor: Irvin Ralph Feins
  • Polyquaternary flocculants
    Patent number: RE28807
    Abstract: Polyquaternary flocculants of average molecular weight, in excess of 10,000 are prepared by reacting a secondary amine with an epihalohydrin or diepoxide for use in flocculation of aqueous systems where ordinary cationic flocculants cannot be used.
    Type: Grant
    Filed: March 6, 1974
    Date of Patent: May 11, 1976
    Assignee: American Cyanamid Company
    Inventors: Hans Peter Panzer, Kenneth Wayne Dixon