Patents by Inventor Allen H. Chan

Allen H. Chan 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).

  • Tuyere and method for discharging gas into a furnace
    Patent number: 5171511
    Abstract: A tuyere and method for discharging an agitating gas into the molten contents of an electrically heated furnace to reduce temperature and composition variations in its contents. The tuyere comprises a refractory plug and sleeve for installation into the refractory wall and shell of the furnace, and a dielectric section in the tuyere pipe outside the furnace shell to prevent electrical arcing and current flow into the gas supply piping and external supports.
    Type: Grant
    Filed: December 12, 1990
    Date of Patent: December 15, 1992
    Assignee: Union Carbide Industrial Gases Technology Corporation
    Inventors: Sudhir K. Sharma, Ronald J. Selines, Michael F. Riley, Alan R. Barlow, Allen H. Chan, Paul J. Schaffer
  • Method and apparatus for transporting photosensitive fluids
    Patent number: 4769335
    Abstract: A container body is formed of a polymer material and contains coloring matter effective to render the body substantially opaque to electromagnetic radiation having a wave length of about 5 to about 600 nm and translucent or semi-transparent to electromagnetic radiation having a wave length of about 600 to about 800 nm. The container permits storage and transport of photosensitive fluids, for example, body fluids for test purposes which contain bilirubin and other photo-degradable substances, but at the same time the contents of the container body are apparent from visual inspection.
    Type: Grant
    Filed: December 2, 1985
    Date of Patent: September 6, 1988
    Assignee: NCS Diagnostics Inc.
    Inventors: F. Walter Schmidt, Allen H. Chan, Warren E. Baker