Patents by Inventor Marvin Edward O'Brien

Marvin Edward O'Brien 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).

  • Fibrous insulation and process for making the same
    Patent number: 3935060
    Abstract: An insulative material comprises a random network of ceramic fibers and a binder for holding the fibers together. In addition, it may include a filler material composed of hollow ceramic spheres which locate at the interstices of the fibrous network and increase the strength of the network. The insulative material can withstand extremely high temperatures and thermal shock without degradation, has an extremely low density, has excellent insulating properties, and has reasonably high compressive strength. The material is formed by making a slurry which contains the ceramic fibers, with or without the filler, and the binder; felting the slurry; subjecting the felt so formed to microwave energy for drying; and firing the dried felt at 2300.degree.-3200.degree.F. to increase its strength.
    Type: Grant
    Filed: October 25, 1973
    Date of Patent: January 27, 1976
    Assignee: McDonnell Douglas Corporation
    Inventors: James C. Blome, Chris J. Goodbrake, Marvin Edward O'Brien, Macy W. Vance