Patents by Inventor Tak-Sang Chan

Tak-Sang 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).

  • SYSTEMS AND METHODS FOR NEGOTIATING A PURCHASE PRICE
    Publication number: 20140129365
    Abstract: Systems and methods to facilitate a purchase of a product by a user from a seller.
    Type: Application
    Filed: March 15, 2013
    Publication date: May 8, 2014
    Inventors: Shawn Harris, Joe Shartzer, Tak-Sang Chan
  • Sprinkler performance evaluation system
    Patent number: 6085585
    Abstract: In a sprinkler effectiveness testing system, a fire plume to simulate a burning warehouse commodity storage array is generated. The sprinkler system to be tested is suspended from an adjustable ceiling. Thermocouples measure the temperature of the fire gases under and adjacent to the ceiling. Collection pans are positioned to collect sprinkler water passing through the plume and to separately collect the sprinkler water passing around the plume.
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: July 11, 2000
    Assignee: Factory Mutual Research Corporation
    Inventors: Hong-Zeng Yu, Tak-Sang Chan, Hsiang-Cheng Kung, William R. Brown, Paraskevas Stavrianidis