Patents by Inventor Eric Ivan Riseley

Eric Ivan Riseley 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 uniformily drawing a tow of filaments
    Patent number: 3947538
    Abstract: Uniformly drawing tows of synthetic linear thermoplastic polymer filaments between sets of feed rolls and draw rolls by saturating a tow while on the feed rolls with water at a temperature of Tg .+-. 10.degree.C and ensuring that drawing is substantially complete before the tow leaves the last feed roll.
    Type: Grant
    Filed: September 29, 1971
    Date of Patent: March 30, 1976
    Assignee: Imperial Chemical Industries, Ltd.
    Inventors: Geoffrey Marshall, Eric Ivan Riseley
  • Process for uniformly drawing polyethylene terephthalate filaments to form high shrinkage fibers
    Patent number: 3943138
    Abstract: A process for uniformly drawing tows of poly(ethylene terephthalate) to produce high shrinkage fibres wherein the drawing is effected with the tow in a hot water saturated condition at a controlled birefringence, temperature and draw ratio. The product has initial shrinkages (as defined) of at least 5% and a high uniformity.
    Type: Grant
    Filed: September 11, 1972
    Date of Patent: March 9, 1976
    Assignee: Imperial Chemicl Industries, Ltd.
    Inventors: Geoffrey Marshall, Eric Ivan Riseley