Patents by Inventor Ronald Sawa

Ronald Sawa 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).

  • Solvent dye preparations
    Patent number: 5298034
    Abstract: Pulverulent dye preparations useful for preparing printing inks or finishes comprise one or more solvent dyes and an auxiliary selected from the group consisting of alkyl vinyl ethers, primary, secondary or tertiary alkylamines, polybutylene glycols and addition products of ethylene oxide with polybutylene glycols.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: March 29, 1994
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Bast, Ronald Sawa, Wolfgang Keil