Patents Assigned to Instytut Wlokiennictwa
  • Conductive fibers
    Patent number: 5593618
    Abstract: The present invention relates to a method for increasing the electrical conductivity of a polymeric substrate material, characterized by treating said material with an intermediate composition having an affinity for the material, said intermediate composition containing a grouping capable of forming a complex or otherwise reacting with a transition metal ion, forming such complex or reaction product with said transition metal ion, and combining said metal ion with an anion moiety thereby increasing the conductivity of said material.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: January 14, 1997
    Assignee: Instytut Wlokiennictwa
    Inventors: Marian K. Okoniewski, Jerzy S. Szadowski, Piotr J. Bajda, Jerzy Z. Kobus, Joanna Koprowska, Barbara E. Ratajczyk
  • Conductive fibres
    Patent number: 5431856
    Abstract: The present invention relates to a method for increasing the electrical conductivity of a polymeric substrate material, characterized by treating said material with an intermediate composition having an affinity for the material, said intermediate composition containing a grouping capable of forming a complex or otherwise reacting with a transition metal ion, forming such complex or reaction product with said transition metal ion, and combining said metal ion with an anion moiety thereby increasing the conductivity of said material.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: July 11, 1995
    Assignee: Instytut Wlokiennictwa
    Inventors: Marian K. Okoniewski, Jerzy S. Szadowski, Piotr J. Bajda, Jerzy Z. Kobus, Joanna Koprowska, Barbara E. Ratajczyk
  • Process and apparatus for producing yarn
    Patent number: 4319448
    Abstract: A process and apparatus for producing yarn by pneumatic means employing a stationary vortex, wherein yarn is first formed by means of a basic twisting movement from air revolving in a spinning chamber and then subjected outside of the spinning chamber to an additional twisting movement corresponding to that of the spinning chamber.
    Type: Grant
    Filed: April 2, 1980
    Date of Patent: March 16, 1982
    Assignee: Instytut Wlokiennictwa
    Inventors: Ryszard Jozwicki, Bogdan Kluska, Czeslaw Radom, Jan Pacholski
  • Duct for feeding fibers to a pneumatic spinning chamber having a stationary whirl
    Patent number: 3948031
    Abstract: A duct for feeding fibres to a spinning chamber operating in accordance with the method of pneumatic spinning in a stationary whirl.As it is seen in the drawing the area of outlet 6 of duct designed for feeding of loose fibres in a stream of air from a fibre opening-feeding device to a spinning chamber is smaller than the sum area of outlets 4 of main nozzles in spinning chamber 3, said area being also smaller than the area of inlet 5 of the said duct. The length of the said duct is greater than the length of processed fibres.
    Type: Grant
    Filed: June 28, 1974
    Date of Patent: April 6, 1976
    Assignee: Instytut Wlokiennictwa
    Inventors: Ryszard Karol Jozwicki, Henryk Kubica, Marianna Teresa Piatkowska