Patents Represented by Attorney Richard Francis

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  • Organic dye having fluoroaliphatic substituent
    Patent number: 4018810
    Abstract: Dyes of the formula ##STR1## WHEREIN R.sub.c is a monovalent chromophoric radical, M is a sulfonyl, carbonyl, or carbonyloxy bridging radical, R.sub.f is a monovalent saturated fluoroaliphatic radical, and R is a monovalent organic radical selected from cyano, MR.sub.f, or aryl sulfonyl. A wide spectrum of unusually brilliant colors is available.
    Type: Grant
    Filed: June 11, 1975
    Date of Patent: April 19, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Ivan H. Skoog
  • Article having a coextruded polyester support film
    Patent number: 4011358
    Abstract: Coated sheet material having a support film which comprises a biaxially oriented, heat-set coextruded laminate formed from two or more polyester polymers, one layer of the laminate being highly crystalline and the coated layer being tough and non-crystalline. Coatings which normally adhere poorly to a biaxially oriented heat-set highly crystalline monofilm adhere firmly to the laminate. Coated sheet products include pressure-sensitive adhesive tape, lithographic printing plates, splicing tapes, and coated abrasives.
    Type: Grant
    Filed: July 23, 1974
    Date of Patent: March 8, 1977
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Glenn E. Roelofs