Patents by Inventor Frank Fred Loffelman

Frank Fred Loffelman 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).

  • Cationic alpha-cyano-p-dimethylaminocinnamoyl dyes and paper dyed therewith
    Patent number: 4017486
    Abstract: Cationic dyes for paper having the formula: ##STR1## wherein R is selected from hydrogen and methyl, X is selected from 0 and NH, n is 2 or 3, and Y.sup.- is an anion selected from halide and methosulfate, have improved storage stability in aqueous acid solutions.
    Type: Grant
    Filed: May 18, 1976
    Date of Patent: April 12, 1977
    Assignee: American Cyanamid Company
    Inventors: Bennett George Buell, Frank Fred Loffelman
  • Method of dyeing hair with indolines, indoles and indazoles
    Patent number: 4013404
    Abstract: A method for dyeing hair and other keratinaceous materials with certain amino, hydroxy, methoxy and nitro-containing indoline, indole and indazole compounds, and combinations thereof, and keratinaceous fibers dyed therewith.
    Type: Grant
    Filed: April 7, 1975
    Date of Patent: March 22, 1977
    Assignee: American Cyanamid Company
    Inventors: Richard Alfred Parent, Frank Fred Loffelman
  • Cyanoformates and cyanoformamides as bleach activators
    Patent number: 3986973
    Abstract: Cyanoformates and cyanoformamides of the formula ##EQU1## wherein A represents a radical selected from --OR and ##EQU2## said R, R.sub.1 and R.sub.2 individually being selected from lower alkyl, unsubstituted phenyl or naphthyl and substituted phenyl or naphthyl wherein the substituents are individually selected from lower alkyl, lower alkoxy, hydroxy, halo and nitro radicals are bleach activators of high strength and good activity at low temperatures in peroxygen bleaching compositions.
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: October 19, 1976
    Assignee: American Cyanamid Company
    Inventors: Frank Fred Loffelman, Robert Edward Misner
  • Acyl nitrile compounds as peroxygen bleach activators
    Patent number: 3986972
    Abstract: Acyl nitrile compounds of the formula:A--CNwherein A represents an acyl radical selected from aroyl, substituted aroyl, cinnamoyl, and the residue of a heterocyclic acid halide, are bleach activators of high strength and good activity in peroxygen salt bleach compositions.
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: October 19, 1976
    Assignee: American Cyanamid Company
    Inventors: Frank Fred Loffelman, Robert Edward Misner
  • 2,4-Diisocyanato-6-halo-s-triazines as peroxygen bleach activators
    Patent number: 3986971
    Abstract: Diisocyanate halotriazine compounds of the formula: ##SPC1##Wherein X is a halogen atom are bleach activators which have high bleaching activity at low temperatures in peroxygen salt bleach compositions and do not appreciably change the shade of cotton dyed with many classes of dyes, particularly Vat Blue 6.
    Type: Grant
    Filed: November 25, 1975
    Date of Patent: October 19, 1976
    Assignee: American Cyanamid Company
    Inventors: Frank Fred Loffelman, Robert Edward Misner
  • Aroyl-N-hydroxyformimidoyl halides as bleach activators
    Patent number: 3986974
    Abstract: Aroyl-N-hydroxyformimidoyl halides of the formula: ##EQU1## wherein Ar represents a substituted or unsubstituted aryl radical and X is halogen, are bleach activators of high strength and good activity at low temperatures in peroxygen salt bleach compositions and do not change the shade of cotton dyed with various classes of dyes, particularly Vat Blue 6.
    Type: Grant
    Filed: November 25, 1975
    Date of Patent: October 19, 1976
    Assignee: American Cyanamid Company
    Inventors: Frank Fred Loffelman, Robert Edward Misner
  • Substituted halotriazines as peroxygen bleach activators
    Patent number: 3947374
    Abstract: Halotriazines of the formula: ##SPC1##Where X represents halogen; and R.sub.1 and R.sub.2 individually represent halogen, hydroxy, mercapto, alkyl, alkenyl, alkoxy, alkylmercapto, aryl, aryloxy, arylmercapto, di-alkoxyphosphinyl or ##EQU1## where R.sub.3 and R.sub.4 individually represent hydrogen, alkyl, alkoxy, cyanoalkyl, hydroxyalkyl, carboxyalkyl, chloroalkyl, alkoxyalkyl, acyloxyalkyl, sulfonalkyl, aryl, haloaryl, sulfoaryl, acylaminoaryl, carbamoylalkyl or arylsulfonyloxyalkyl, or where R.sub.3 and R.sub.4 taken together complete a ring structure selected from morpholine, piperazine, piperdine, succinimide, malemide and phthalimide rings; are bleach activators of high activating strength and good storage stability in peroxygen bleaching compositions.
    Type: Grant
    Filed: July 16, 1974
    Date of Patent: March 30, 1976
    Assignee: American Cyanamid Company
    Inventors: Frank Fred Loffelman, Thomas Eugene Brady