Patents by Inventor David J. Spelman

David J. Spelman 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).

  • Method of preparing aerogel-containing insulation article
    Patent number: 6598283
    Abstract: The inventive method of preparing an insulation article comprises providing a sealed first container comprising aerogel particles under a first air pressure that is less than atmospheric pressure. The unrestrained volume of the aerogel particles at the first air pressure is less than the unrestrained volume of the aerogel particles under a second air pressure that is greater than the first air pressure. The sealed first container then is placed within a second container, and the sealed first container is breached to equalize the air pressure between the first and second containers at the second air pressure and to increase the volume of the aerogel particles, thereby forming the insulation article.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: July 29, 2003
    Assignee: Cabot Corporation
    Inventors: Stephane F. Rouanet, David J. Spelman
  • METHOD OF PREPARING AEROGEL-CONTAINING INSULATION ARTICLE
    Publication number: 20030115838
    Abstract: The inventive method of preparing an insulation article comprises providing a sealed first container comprising aerogel particles under a first air pressure that is less than atmospheric pressure. The unrestrained volume of the aerogel particles at the first air pressure is less than the unrestrained volume of the aerogel particles under a second air pressure that is greater than the first air pressure. The sealed first container then is placed within a second container, and the sealed first container is breached to equalize the air pressure between the first and second containers at the second air pressure and to increase the volume of the aerogel particles, thereby forming the insulation article.
    Type: Application
    Filed: December 21, 2001
    Publication date: June 26, 2003
    Applicant: Cabot Corporation
    Inventors: Stephane F. Rouanet, David J. Spelman