Patents Assigned to University of Waterloo
  • Production of magnesium metal
    Patent number: 4518425
    Abstract: Magnesium metal is formed by the silicothermic method in a manner which is a substantial improvement over prior art processes. Magnesium oxide, calcium oxide and silicon are reacted in a heated flowing inert gas stream, for example, hydrogen, argon or helium, which maintains the reaction temperature and removes gaseous magnesium from the reaction zone. Magnesium is recovered from the inert gas stream in liquid or solid form by cooling. Heat recovery is effected to preserve thermal efficiency and the inert gas stream is recycled to the reaction zone. Continuous production of magnesium can be effected.
    Type: Grant
    Filed: December 20, 1983
    Date of Patent: May 21, 1985
    Assignee: University of Waterloo
    Inventor: John R. Wynnyckyj
  • Furnace wall ash deposit fluent phase change monitoring system
    Patent number: 4514096
    Abstract: The build up of ash in a pulverized coal-fired boiler is achieved by comparing the heat flux simultaneously detected by a first flux detector which is maintained free of deposits and a second flux detector on which deposits are permitted to form. The net values from the heat flux comparison is proportional to the heat flux which is not reaching the boiler walls as a result of the ash deposits.
    Type: Grant
    Filed: September 2, 1983
    Date of Patent: April 30, 1985
    Assignee: University of Waterloo
    Inventors: John R. Wynnyckyj, Edward Rhodes, Allan K. Chambers
  • Bioconversion of cereal grain straws to protein-enriched product
    Patent number: 4401680
    Abstract: Cereal grain straws are converted into protein-enriched products having significnt amounts of microbial biomass in the form of the fungus, Chaetomium cellulolyticum.
    Type: Grant
    Filed: March 4, 1981
    Date of Patent: August 30, 1983
    Assignee: University of Waterloo
    Inventor: Murray M. Young
  • Bioconversion of industrial cellulosic pulp materials to protein enriched product
    Patent number: 4379844
    Abstract: An industrial cellulosic pulp material, such as wood pulp and paper stock, pulp sludges resulting from the manufacture of paper, coffee and sugar and starch-rich cellulosic materials, such as, bananas and root crops, is converted into a protein-enriched product having significant amounts of microbial biomass in the form of the fungus, Chaetomium cellulolyticum.
    Type: Grant
    Filed: March 4, 1981
    Date of Patent: April 12, 1983
    Assignee: University of Waterloo
    Inventor: Murray M. Young
  • Destruction of PCB's
    Patent number: 4326090
    Abstract: Polychlorinated biphenyls (PCB's) are dechlorinated and rendered environmentally harmless by reaction with preformed sodium naphthalenide in a suitable ether-type solvent. The reaction proceeds rapidly at ambient temperature and effects substantially complete removal of chlorine from the PCB's.
    Type: Grant
    Filed: October 8, 1980
    Date of Patent: April 20, 1982
    Assignee: University of Waterloo
    Inventors: James G. Smith, Gurbachan L. Bubbar
  • Fermentation processes using scraped tubular fermentor
    Patent number: 4025394
    Abstract: Fermentation of a substrate by microorganisms capable of utilizing the substrate for growth is improved by conveying a fermentation medium including the substrate and microoganisms through a hollow tube with the assistance of an internal wall-scraper.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: May 24, 1977
    Assignee: The University of Waterloo
    Inventor: Murray Moo Young
  • Fermentation processes for making penicillin and cellulase
    Patent number: 3975236
    Abstract: The presence of small dissolved quantities of carboxypolymethylenes in culture media producing cellulase or penicillin enhances the fermentation parameters.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: August 17, 1976
    Assignee: The University of Waterloo
    Inventor: Murray Moo Young