Patents by Inventor Bhima R. Vijayendrar

Bhima R. Vijayendrar 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).

  • Froth moderating agent for controlling froth and reducing stickies in the flotation process for deinking waste paper
    Patent number: 6013157
    Abstract: Describes flotation deinking of secondary fiber using a froth moderating agent, a composition of the froth moderating agent with flotation deinking chemicals, and reducing the amount of stickies in separated seconday fiber. The froth moderating agent is selected from the group consisting of:(a) nonionic surfactant material represented by the formula:R--C.sub.6 H.sub.4 O--(C.sub.2 H.sub.4 O).sub.m --(C.sub.3 H.sub.6 O).sub.n --(C.sub.4 H.sub.8 O).sub.p --R.sup.1wherein R is an aliphatic hydrocarbon group containing from about 5 to 20 carbon atoms, R.sup.1 is selected from the group consisting of chloro, C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.
    Type: Grant
    Filed: July 2, 1997
    Date of Patent: January 11, 2000
    Assignee: BASF Corporation
    Inventors: Chin Li, David A. Longhini, Bhima R. Vijayendrar