Patents by Inventor Jan Lukowczyk

Jan Lukowczyk 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).

  • Method for manufacturing hydroxyethyl starch derivatives
    Patent number: 9631032
    Abstract: A method for manufacturing a modified hydroxyethyl starch carrying a heptonic acid residue on at least one of its termini. Within this method, the following steps are carried out: a) dissolving hydroxyethyl starch in water, b) adjusting the pH value to a value of 8.0 to 10.0, c) adding a cyanide compound to the hydroxyethyl starch solution, heating the solution to a temperature of 80 to 99° C. and keeping it at this temperature for a first time period, and d) adjusting the pH value to a value of 2.0 to 4.0, bringing the solution to a temperature of 50 to 90° C. and keeping it at this temperature for a second time period.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: April 25, 2017
    Assignee: Serumwek Bernburg AG
    Inventors: Werner Zimmermann, Jan Lukowczyk
  • Method for Manufacturing Hydroxyethyl Starch Derivatives
    Publication number: 20160046733
    Abstract: A method for manufacturing a modified hydroxyethyl starch carrying a heptonic acid residue on at least one of its termini. Within this method, the following steps are carried out: a) dissolving hydroxyethyl starch in water, b) adjusting the pH value to a value of 8.0 to 10.0, c) adding a cyanide compound to the hydroxyethyl starch solution, heating the solution to a temperature of 80 to 99° C. and keeping it at this temperature for a first time period, and d) adjusting the pH value to a value of 2.0 to 4.0, bringing the solution to a temperature of 50 to 90° C. and keeping it at this temperature for a second time period.
    Type: Application
    Filed: October 26, 2015
    Publication date: February 18, 2016
    Inventors: Werner Zimmermann, Jan Lukowczyk
  • Method for manufacturing hydroxyethyl starch derivatives
    Patent number: 9181353
    Abstract: A method for manufacturing a modified hydroxyethyl starch carrying a heptonic acid residue on at least one of its termini is disclosed. Within this method, the following steps are carried out: a) dissolving hydroxyethyl starch in water, b) adjusting the pH value to a value of 8.0 to 10.0, c) adding a cyanide compound to the hydroxyethyl starch solution, heating the solution to a temperature of 80 to 99° C. and keeping it at this temperature for a first time period, and d) adjusting the pH value to a value of 2.0 to 4.0, bringing the solution to a temperature of 50 to 90° C. and keeping it at this temperature for a second time period.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: November 10, 2015
    Assignee: Serumwerk Bernburg AG
    Inventors: Werner Zimmermann, Jan Lukowczyk
  • Method for Manufacturing Hydroxyethyl Starch Derivatives
    Publication number: 20140128594
    Abstract: A method for manufacturing a modified hydroxyethyl starch carrying a heptonic acid residue on at least one of its termini is disclosed. Within this method, the following steps are carried out: a) dissolving hydroxyethyl starch in water, b) adjusting the pH value to a value of 8.0 to 10.0, c) adding a cyanide compound to the hydroxyethyl starch solution, heating the solution to a temperature of 80 to 99° C. and keeping it at this temperature for a first time period, and d) adjusting the pH value to a value of 2.0 to 4.0, bringing the solution to a temperature of 50 to 90° C. and keeping it at this temperature for a second time period.
    Type: Application
    Filed: June 21, 2012
    Publication date: May 8, 2014
    Applicant: SERUMWERK BERNBURG AG
    Inventors: Werner Zimmermann, Jan Lukowczyk