Patents by Inventor Wei W. Hsu

Wei W. Hsu 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).

  • PVC red-mud compositions
    Patent number: 4161465
    Abstract: This invention relates to the production of a plastic material from new or waste polyvinylchloride (PVC) compounds with waste red-mud. The compositions may preferably also contain used machine lubricating oil. The degradation products in the PVC are neutralized by the free alkalies in the red-mud. The plastic material may also contain other additives, such as fillers and plasticizers to obtain desired physical properties.
    Type: Grant
    Filed: July 18, 1977
    Date of Patent: July 17, 1979
    Assignee: Industrial Technology Research Institute
    Inventors: Paul L. C. Hao, Horng S. Tang, Wei W. Hsu