Patents by Inventor Ludmilla Pluto

Ludmilla Pluto 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).

  • Stabilized stain composition
    Patent number: 4741898
    Abstract: Formulations of a cationic dye component (e.g., Azure A-Azure B-Azure C mixtures), an anionic dye component (e.g., Eosin Y) and an alcohol solvent (e.g., methanol or methanol-glycerol mixtures) are stabilized by an amino acid or its acid addition salt (e.g. lysine hydrochloride or glycine or a mixture of these).
    Type: Grant
    Filed: April 1, 1985
    Date of Patent: May 3, 1988
    Assignee: Fisher Scientific Company
    Inventors: Arjun Mallik, Daniel Koetters, Ludmilla Pluto