Patents by Inventor Hugo Specker

Hugo Specker 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).

  • Process for manufacture of crimped polyester yarn from cold drawn polyester-POY yarn
    Patent number: 5139725
    Abstract: A process for the manufacture of a crimped polyester yarn obtained from a polyester partially-oriented yarn comprising fabricating a partially-oriented polyester yarn by a high-speed process, cooling the partially-oriented polyester yarn, cold drawing the cooled yarn, and subjecting the cold drawn polyester yarn to a thermal treatment under tensionless conditions or under controlled overfeed conditions.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: August 18, 1992
    Assignee: Rhone-Poulenc Viscosuisse S.A.
    Inventors: Hugo Specker, Paul Schaffner
  • Process for manufacturing a smooth polyester yarn and yarn so obtained
    Patent number: 5106685
    Abstract: In a process for manufacturing a smooth, dimensionally stable, shrink-resistant polyester filament yarn, the starting product is a polyester POY. The polyester POY (5a) is cold-stretched (5b) in a stretching ratio of 1.8 to 2.5 and then relaxed with an advance of approximately 3 to 10%. The yarn so obtained has an initial modulus of 600 to 1200 cN/tex, a reversibility limit greater than >8 cN/tex, and an extensibility less than <20%. It is used as a high-strength polyester yarn whenever dimensional stability is essential.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: April 21, 1992
    Assignee: Rhone-Poulenc Viscosuisse SA
    Inventor: Hugo Specker
  • Product and method of producing a smooth polyester yarn
    Patent number: 4950539
    Abstract: A method of producing a smooth, cold-drawn multifilament yarn from a polyester POY comprising cold-drawing of the polyester POY to a draw ratio of at least 1.6 and subsequent hot-relaxing the polyester POY under an over-feed of 10 to 20%, and a polyester yarn produced by this method.
    Type: Grant
    Filed: June 9, 1988
    Date of Patent: August 21, 1990
    Assignee: Viscosuisse SA
    Inventors: Hugo Specker, Paul Schaffner
  • Crimped polyester-yarn from cold drawn polyester-POY-yarn and process for its manufacture
    Patent number: 4908269
    Abstract: The invention concerns a crimped Polyester-yarn obtained from cold drawn Polyester-POY as well as a process for its manufacture.For this yarn the stress/strain course between 10 and 30% elongation resulting from the stretch test corresponds to a secant modul of 0-100%. Application in the knitting, weaving and warp knitting.
    Type: Grant
    Filed: August 9, 1984
    Date of Patent: March 13, 1990
    Assignee: Viscosuisse S.A.
    Inventors: Hugo Specker, Paul Schaffner