Patents by Inventor John I. R. Rosenqvist

John I. R. Rosenqvist 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 the manufacture of elastic articles from poly(monovinylaromatic/conjugated diene) block copolymers and elastic articles obtainable therewith
    Patent number: 5510072
    Abstract: A process for the manufacturing of elastic articles such as fibers, yarns, or films, from substantially pure selectively hydrogenated block copolymers, comprising at least two blocks predominantly derived from monoalkylene aromatic monomer and at least one block predominantly derived from one or more conjugated dienes and having a number average molecular weight of at least 70,000, comprising the steps of preparing a solution or a gel of said block copolymer with an apolar organic non-aromatic solvent and processing said solution or gel through a fiber forming orifice.
    Type: Grant
    Filed: June 20, 1994
    Date of Patent: April 23, 1996
    Assignee: Shell Oil Company
    Inventors: John I. R. Rosenqvist, Teunis Graafland, Hans F. Vermeire