Patents by Inventor John A. Ford, Jr.

John A. Ford, Jr. 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).

  • Azo dye derivatives of 2,3-naphthalenediols
    Patent number: 4247459
    Abstract: Azo dye compounds of substantially neutral density which are particularly useful in liquid electrographic developers and are of the formula: ##STR1## wherein: R.sup.1 is hydrogen, --COOH, --CONH.sub.2, --SO.sub.2 NH.sub.2 or --SO.sub.3 M and M is a cation;R.sup.2 is a lower alkoxy radical, --OCH.sub.2 CONH.sub.2, or ##STR2## R.sup.3 is hydrogen or nitro; and R.sup.4 and R.sup.5 are the same or different lower alkyl or lower hydroxyalkyl radicals.
    Type: Grant
    Filed: July 10, 1979
    Date of Patent: January 27, 1981
    Assignee: Eastman Kodak Company
    Inventors: John A. Ford, Jr., Louis J. Rossi
  • Electrographic liquid developers containing azo dye marking particles derived from 2,3-naphthalenediol or derivatives thereof
    Patent number: 4145299
    Abstract: An electrographic liquid developer comprising a carrier liquid and a marking particle which comprises a dye compound having the formula: ##STR1## wherein: R.sup.1 is H, COOH, CONH.sub.2, --SO.sub.2 NH.sub.2 or --SO.sub.3 M where M is Na.sup.+ or NH.sub.4 ;R.sup.2 is a lower alkoxy radical, --OCH.sub.2 CONH.sub.2, or ##STR2##where each of R.sup.6 and R.sup.7 is a lower alkyl radical; andR.sup.3 is H, a lower alkyl radical, a lower alkoxy radical or NO.sub.2.
    Type: Grant
    Filed: April 3, 1978
    Date of Patent: March 20, 1979
    Assignee: Eastman Kodak Company
    Inventors: John A. Ford, Jr., Louis J. Rossi, Domenic Santilli