Patents by Inventor Richard N. Rulison

Richard N. Rulison 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 fabrication of hollow filament separatory module
    Patent number: 4045851
    Abstract: A method of making a module for use in processes such as reverse osmosis, ultrafiltration, dialysis, and the like in which hollow filaments to be utilized as semi-permeable membranes comprise a coreless annular array of helically wound filaments.
    Type: Grant
    Filed: September 20, 1974
    Date of Patent: September 6, 1977
    Assignee: Albany International Corporation
    Inventors: Edward Ashare, Richard N. Rulison, Lawrence T. Wright, Myron J. Coplan
  • Process for drawing acrylic fibrous materials to form a product which particularly is suited for thermal stabilization and carbonization
    Patent number: 3975482
    Abstract: An improved process for drawing a continuous length of an acrylic multifilament fibrous material is provided. Prior to drawing at an elevated temperature by continuous passage through a suitable drawing zone the surface of the fibrous material is coated with powdered graphite (e.g. colloidal graphite) via contact with a dipersion containing the graphite paticles which serve to improve the drawing properties of the same. The process is suited for the hot drawing of a continuous length of an acrylic multifilament fibrous material (e.g. a substantially untwisted tow) which is intended for subsequent thermal stabilization, and cabonization to form a carbonaceous fibrous material.
    Type: Grant
    Filed: June 10, 1974
    Date of Patent: August 17, 1976
    Assignee: Celanese Corporation
    Inventor: Richard N. Rulison