Patents by Inventor Nickolas J. Stepaniuk

Nickolas J. Stepaniuk 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).

  • Continuous preparation of aromatic diazonium fluoride salts from corresponding aromatic amines
    Patent number: 5055563
    Abstract: Disclosed is a process for continuous preparation of aromatic diazonium fluoride salts wherein diazotizable aromatic primary amines are continuously diazotized in a series of continuous-stirred tank reactors, wherein a portion of a premixed diazotization solution is cooled prior to being continuously fed into each of the reactors.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: October 8, 1991
    Assignee: Mallinckrodt Specialty Chemicals Company
    Inventors: Bruce J. Lamb, Nickolas J. Stepaniuk
  • Preparation of nitrosyl fluoride
    Patent number: 4996035
    Abstract: A process for the production of nitrosyl fluoride from nitrite and hydrogen fluoride. Nitrite solids and hydrogen fluoride are separately introduced and blended into nitrosyl fluoride so as to form a reaction mixture within which the nitrite and the hydrogen fluoride react to produce additional nitrosyl fluoride. The hydrogen fluoride is introduced into the reaction mixture spaced away from where the nitrite is introduced into the reaction mixture so that the hydrogen fluoride and the nitrite separately mix into the nitrosyl fluoride and are diluted therein before mixing with each other, thereby avoiding a violent reaction between the hydrogen fluoride and the nitrite.
    Type: Grant
    Filed: February 5, 1990
    Date of Patent: February 26, 1991
    Assignee: Mallinckrodt, Inc.
    Inventors: Nickolas J. Stepaniuk, Bruce J. Lamb
  • Process for the continuous diazotization of amines in a multi-stage reactor
    Patent number: 4918168
    Abstract: Disclosed is a process for continuous preparation of aromatic diazonium fluoride salts wherein diazotizable aromatic primary amines are continuously diazotized in a reactor containing a plurality of sequential reaction zones, wherein a portion of the diazotization agent is continuously injected into each of the reaction zones.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: April 17, 1990
    Assignee: Mallinckrodt Inc.
    Inventors: Nickolas J. Stepaniuk, Bruce J. Lamb
  • Continuous preparation of nitrosyl fluoride
    Patent number: 4908270
    Abstract: A process and apparatus for the continuous production of nitrosyl fluoride from nitrite and hydrogen fluoride. Nitrite solids and hydrogen fluoride are separately introduced and blended into nitrosyl fluoride so as to form a reaction mixture within which the nitrite and the hydrogen fluoride react to produce additional nitrosyl fluoride. The hydrogen fluoride is introduced into the reaction mixture spaced away from where the nitrite is introduced into the reaction mixture so that the hydrogen fluoride and the nitrite separately mix into the nitrosyl fluoride and are diluted therein before mixing with each other, thereby avoiding a violent reaction between the hydrogen fluoride and the nitrite.
    Type: Grant
    Filed: February 27, 1989
    Date of Patent: March 13, 1990
    Assignee: Mallinckrodt, Inc.
    Inventors: Nickolas J. Stepaniuk, Bruce J. Lamb
  • Continuous decomposition of diazonium fluorides
    Patent number: 4822927
    Abstract: Disclosed is a process for continuous preparation of aromatic fluorides wherein aromatic diazonium fluorides are continuously decomposed at low concentration in a reaction system of one or more continuous agitated reactors.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: April 18, 1989
    Assignee: Mallinckrodt, Inc.
    Inventors: Nickolas J. Stepaniuk, Bruce J. Lamb