Patents by Inventor Jana W. Chu

Jana W. Chu 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: 6242402
    Abstract: An improved cleaning composition is provided for shower and tub surfaces which is of the “shower rinsing” type, requiring no scrubbing, wiping, or immediate rinsing. The composition comprises: (a) a glycoside surfactant, the total amount of said surfactant being present in a cleaning effective amount; (b) a chelating agent, said chelating agent present in an amount effective to enhance bathroom soil removal in said composition; and (c) the remainder, water. A solvent such as isopropyl alcohol may also be added. The employment of a glycoside surfactant, especially one having an HLB value of greater than 13, remarkably improves the performance of such a shower rinsing composition both with respect to surface appearance streaking and filming and also bathroom soil and soap scum removing ability.
    Type: Grant
    Filed: October 11, 2000
    Date of Patent: June 5, 2001
    Assignee: The Clorox Company
    Inventors: Michael H. Robbins, David Peterson, Clement K. Choy, Jana W. Chu, James R. Latham
  • Patent number: 6159916
    Abstract: An improved cleaning composition is provided for shower and tub surfaces which is of the "shower rinsing" type, requiring no scrubbing, wiping, or immediate rinsing. The composition comprises:(a) a glycoside surfactant, the total amount of said surfactant being present in a cleaning effective amount;(b) a chelating agent, said chelating agent present in an amount effective to enhance bathroom soil removal in said composition; and(c) the remainder, water. A solvent such as isopropyl alcohol may also be added. The employment of a glycoside surfactant, especially one having an HLB value of greater than 13, remarkably improves the performance of such a shower rinsing composition both with respect to surface appearance streaking and filming and also bathroom soil and soap scum removing ability.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: December 12, 2000
    Assignee: The Clorox Company
    Inventors: Michael H. Robbins, David Peterson, Clement K. Choy, Jana W. Chu, James R. Latham