Patents by Inventor Jyh-Feng Hwang

Jyh-Feng Hwang 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).

  • Air pollution control process and apparatus for glass furnace
    Patent number: 5636240
    Abstract: An air pollution control process and apparatus for glass furnaces for use in the furnace's waste gas outlet including passing the waste gases through a spray type neutralization tower to remove sulphates in the waste gases by spraying an absorbent (NaOH) to reduce the opacity of exhaust gas, and employing a pneumatic powder feeding device to feed flyash or calcium hydroxide periodically in a path between the spray type neutralization tower and a bag house to maintain normal functioning of the filter bag in the bag house.
    Type: Grant
    Filed: November 16, 1994
    Date of Patent: June 3, 1997
    Assignee: Industrial Technology Research Institute
    Inventors: Jeng-Syan Tsai, Jyh-Feng Hwang
  • Recovery of waste liquid from production of rice liquor
    Patent number: 5328707
    Abstract: A process for recovering waste liquid from the distillation of fermented rice liquor. After filtration of the waste liquid, the residue can be recovered as dry feed, and the filtrate which contains about 4-5% crude protein, 1% starch and 92 wt. % water is first concentrated to lower the water content to about 70-80 wt. %. The filtrate is then dried with a spray dryer to produce nutritious dry feed while a suitable chelating agent such as magnesium hydroxide is used to prevent the clinging of the product on the wall of the dryer.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: July 12, 1994
    Assignee: Industrial Technology Research Institute
    Inventors: Rey-Chein Chang, Jyh-Feng Hwang