Patents by Inventor Sangarappillai Nagendran

Sangarappillai Nagendran 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).

  • Coating apparatus
    Patent number: 4106433
    Abstract: The method and apparatus for applying a liquid to a movable web of moisture-absorbent material, such as toilet paper or other roll paper sheet material, includes providing a container for storing a quantity of the liquid to be applied to the web, causing the web and the container to be moved relative to one another to apply the liquid from the container to the web in a first pattern. Simultaneously therewith, the liquid is also applied to the web in a second pattern which is spaced transversely from the first pattern to enable the web to retain its structural strength as it becomes wet.
    Type: Grant
    Filed: July 26, 1977
    Date of Patent: August 15, 1978
    Assignees: Chulani Kumarlal Fernando, Sangarappillai Asokan, Sangarappillai Nagendran, Mohanlal Randith Wickramasinghg
    Inventors: Chulani Kumarlal Fernando, Sangarappillai Asokan, Sangarappillai Nagendran, Mohanlal Randith Wickramasinghg, H. Paul Weirich