Patents by Inventor Wen-Tsam Chang

Wen-Tsam Chang 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).

  • Apparatus for disassembling an injector head
    Patent number: 6199255
    Abstract: Apparatus for aiding in the disassembly of a mechanical assembly, such as an injector head having a plurality of interconnected, stacked plates. The apparatus includes a stationary base with side walls between which the plates are received to maintain registration of the latter during disassembly. A carriage slideably mounted on the base includes a clamp for clamping the head on the base and means for securing a portion of the head on the carriage such that the head portion moves along with the carriage. Through holes in the side walls allow certain of the plates to be secured to the side walls against movement of the carriage such that upward movement of the carriage separates the plates.
    Type: Grant
    Filed: October 6, 1999
    Date of Patent: March 13, 2001
    Assignee: Taiwan Semiconductor Manufacturing Company, Ltd
    Inventors: Wen-Yi Wang, Yi-Kun Chen, Chia-Hsin Lin, Wen-Tsam Chang