Patents by Inventor Alwin Bennett Chen

Alwin Bennett Chen 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).

  • Refractory fiber composition and intermediate temperature range fibrous insulation composed thereof
    Patent number: 4055434
    Abstract: Refractory fiber compositions are disclosed comprising 84% to 97% by weight total silica and alumina, with the silica-to-alumina weight ratio being in the range of 3:2 to 1:1, preferably approximatey 5:4, and 3% to 16% by weight of a dolomitic component comprising calcium oxide and magnesium oxide. The dolomitic component may be composed of burnt dolomite or lime and magnesia. The fibers made of these compositions are suitable for thermal insulation use at temperatures in the range of from 1400.degree. F to 2000.degree. F (760.degree. C to 1100.degree. C) and find particular use as insulating mats and blankets for furnaces, kilns and automobile catalytic mufflers.
    Type: Grant
    Filed: April 23, 1976
    Date of Patent: October 25, 1977
    Assignee: Johns-Manville Corporation
    Inventors: Alwin Bennett Chen, John Matthew Pallo