Patents by Inventor Lolo Bylander

Lolo Bylander 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).

  • Toner for electrophotographic methods and process for preparing the same
    Patent number: 4837107
    Abstract: A toner and a method for the preparation of toner particles essentially consisting of monodisperse spherical thermoplastic particles having a coefficient of variation below 30 per cent and a mean diameter between 2 and 50 .mu.m, the particles having a shell of polymeric material in which a colorant is distributed. The particles are prepared by treating monodispersed spherical polymerized base particles with a shell-polymer and a colorant and contacted to give a uniform distribution of the additives on the base particles whereafter the shell-polymer is fused to the base particles.
    Type: Grant
    Filed: March 25, 1988
    Date of Patent: June 6, 1989
    Assignee: Casco Nobel AB
    Inventors: Anders R. Axelsson, Lolo Bylander, Sten Porrvik, Olof Tanner