Patents by Inventor Joseph C. Catlin

Joseph C. Catlin 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).

  • Paper dye
    Patent number: 5883233
    Abstract: This invention relates to a dye having the formula (I) ##STR1## wherein each M is a hydrogen ion, an alkali metal ion, or R.sup.a R.sup.b R.sup.c R.sup.d N.sup.+ (where R.sup.a, R.sup.b, R.sup.c and R.sup.d are independently hydrogen, C.sub.1 -C.sub.6 alkyl, or C.sub.1 -C.sub.6 hydroxyalkyl). This invention further relates to the use of the dye.
    Type: Grant
    Filed: July 24, 1998
    Date of Patent: March 16, 1999
    Assignee: Bayer Corporation
    Inventors: Joseph C. Catlin, Richard H. Kokel
  • Process for removal of copper ions from aqueous effluent
    Patent number: 5133873
    Abstract: This invention relates to a process for removing copper ions from highly acidic waste water generated during the manufacture of dyes or pigments or intermediates thereof. The waste water is exposed at a pH less than about 1 to a bed of suspended iron particles, preferably a fluidized bed of iron particles, having a particle size of from about 200 to about 950 micrometers.
    Type: Grant
    Filed: February 22, 1991
    Date of Patent: July 28, 1992
    Assignee: Miles Inc.
    Inventors: Joseph C. Catlin, Margaret D. Ellis, James J. Good, Mark A. Putnam, Neal E. Tonks, Donald V. Wood