Patents by Inventor Al Zimin, Sr.

Al Zimin, Sr. 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).

  • Color canceling marking systems
    Patent number: 6294110
    Abstract: Two or more dyes or markers, including a dye or marker having an absorbance peak in the 400 to 500 nm range and including a dye or marker having an absorbance peak in the 560 to 700 nm range are mixed together in appropriate ratios so when added to a liquid, such as a petroleum fuel, at combined levels of from 5 to 100 ppm, the colors of the dyes and/or markers cancel each other such that a “water-white” liquid still appears “water-white”.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: September 25, 2001
    Assignee: Rohm and Haas Company
    Inventors: Michael R. Friswell, Al Zimin, Sr., Peter A. Caputo
  • Stabilized aqueous diazo solutions
    Patent number: 6080213
    Abstract: A stabilized aqueous solution of a diazo compound has the formula: ##STR1## where X.sup.1 is selected from nitro and chloro, X.sup.2 is selected from nitro, chloro and hydrogen, and Y is an acid-derived anion. The solution has a pH of about 1.5 or below and a diazo concentration of about 2 wt % or less. The solution is useful as an extractant/developer for petroleum fuel markers.
    Type: Grant
    Filed: September 9, 1998
    Date of Patent: June 27, 2000
    Assignee: Morton International, Inc.
    Inventor: Al Zimin, Sr.