Patents by Inventor Socorro Ramos

Socorro Ramos 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).

  • Benzpyrylium squarylium and croconylium dyes, and processes for their preparation and use
    Patent number: 5405976
    Abstract: Dyes comprising an inner salt of a compound of the formula:Q.sup.1 =Z-Q.sup.2wherein:Q.sup.1 is a 4-(benz[b]-4H-pyrylium)methylidene, 4-(benz[b]-4H-thiopyrylium)methylidene or 4-(benz[b]-4H-selenopyrylium)methylidene grouping;Z is a 1,3-(2-hydroxy-4-oxo-2-cyclobutylidene) hydroxide or 1,3-(2-hydroxy-4,5-dioxo-2-cyclopentylidene) hydroxide ring; andQ.sup.2 is a 4-(benz[b]-4H-pyran-4-ylidene)methyl, 4-(benz[b]-4H-thiopyran-4-ylidene)methyl or 4-(benz[b]-4H-selenopyran-4-ylidene)methyl grouping;wherein at least one of the groupings Q.sup.1 and Q.sup.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: April 11, 1995
    Assignee: Polaroid Corporation
    Inventors: Stephen J. Telfer, Robert P. Short, Stephen G. Stroud, Anthony J. Puttick, Socorro Ramos, Michael J. Zuraw