Patents by Inventor Calvin Kok-Hwa Cheok

Calvin Kok-Hwa Cheok 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).

  • Patent number: 5746353
    Abstract: The present invention relates in general to a portable laundry detergent dispensing system. This unit is divided into three holding containers, one for liquid detergent, one for powdered detergent and one for liquid fabric softener. The center back compartment is a storage compartment for a measuring cup, a mixing rod and other laundry accessories. The storage compartment also includes a coin-holder for nickles, dimes and quarters in the rear wall. The powder dispenser is a cylindrical dump cup having an opening therein which allows a fixed amount of the the solid detergent to flow into a measuring cup. Liquid detergents and softeners are dispensed with a fixed volume hand pump assembly connected to retractable hose assemblies.
    Type: Grant
    Filed: June 25, 1996
    Date of Patent: May 5, 1998
    Inventors: Calvin Kok-Hwa Cheok, Rajesh Jaigopai Saggi