Patents by Inventor Mats Nystrom

Mats Nystrom 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 for preparation of silica particles
    Patent number: 5256386
    Abstract: Silica particles which are substantially spherical, have a particle size of 1 to 100 .mu.m, a very narrow pore size distribution and a low alkali metal content. The particles can be prepared by sol-gel technique using emulsification technique for drop formation. The process comprises a sol growth step in a basic environment based on ammonium or amines and a post-treatment in such an environment. The silica particles are particularly suitable for use in chromatography as they have very good particle and porosity properties and high purity.
    Type: Grant
    Filed: June 14, 1990
    Date of Patent: October 26, 1993
    Assignee: Eka Nobel AB
    Inventors: Mats Nystrom, Wolgang Herrmann, Bernt Larsson
  • Motor vehicle clutch for a mechanical, multiple-speed automatic transmission
    Patent number: 4889217
    Abstract: A motor vehicle clutch is particularly suited for a mechanical multiple-speed automatic transmission. The clutch comprises a pair of alternatingly engageable clutch discs (5,7) mounted on a pair of concentric shafts (8,10). In addition to a centrifugal arrangement (29,30) for engagement when starting, the clutch comprises a hydraulic control system with a piston cylinder device (20) and two three-way magnetic valves (51,52), one (51) of which is capable of presure regulation and the other (52) has merely an on-off function.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: December 26, 1989
    Assignee: Ab Volvo
    Inventors: Gzegorz Janiszewski, Thomas Sahlmen, Mats Nystrom