Patents by Inventor Joachim Wiegand

Joachim Wiegand 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).

  • Patent number: 5654067
    Abstract: Described is a loop pile material composed of a textile backing composed of a knit or woven and bound-in loop-forming pile yarns, whereinthe textile backing consists of a multifilament hybrid yarn composed of at least 2 varieties A and B of filaments with or without cofilaments C, wherein said filaments A are textured,the melting point of said filaments B being at least 20.degree. C., preferably at least 40.degree. C., in particular at least 80.degree. C., below the melting point of filaments A,the weight ratio of the filaments A:B being within the range from 20:80 to 80:20, preferably from 40:60 to 60:40, and the multifilament hybrid yarn additionally containing up to 40% by weight of cofilaments C, and the pile consists of loops with a length of 1 to 4 mm formed from a multifilament yarn having a yarn linear density of 30 to 200 dtex and filament linear densities of 5 to 25 dtex and/or from monofilaments having a linear density of 20 to 70 dtex.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: August 5, 1997
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Rolf Dinger, Joachim Wiegand, Armin Fendt
  • Patent number: 5618624
    Abstract: The present invention relates to a pile material composed of a textile backing composed of a knit or woven and bound-in loop-forming pile yarns, the textile backing consisting of a multifilament hybrid yarn composed of a mixture of lower melting and crimped higher melting filaments, said pile material being capable of three-dimensional deformation and having a backing which can be consolidated by heat treatment. The pile material of the invention has a pleasantly soft, textile hand and can be used for example as cover for seating or for textile surface decoration of complicatedly styled contours, for example the inner surface of motorcardoors.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: April 8, 1997
    Assignee: Hoechst Trevira GmbH & Co. KG
    Inventors: Rolf Dinger, Joachim Wiegand, Armin Fendt
  • Patent number: 4002427
    Abstract: A method of making crimped, dyed multicomponent filaments of at least 2 polyester components including spinning the filaments together in a side-by-side relationship or in an eccentric sheath-core relationship, stretching the spun filaments and developing the crimp. The crimped filaments are wound on a bobbin with a Shore hardness of from 15.degree. to 70.degree., then dyed on the bobbin. The crimped dyed multicomponent filaments can be processed further to yield textile fabrics directly without an intermediate rewinding process.
    Type: Grant
    Filed: June 24, 1975
    Date of Patent: January 11, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hilmar Moller, Joachim Wiegand