Patents by Inventor Jan Lijzenga

Jan Lijzenga 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).

  • Plastic bituminous compositions
    Patent number: 4332703
    Abstract: Plastic bituminous compositions comprising(a) 100-30 % w of a mixture of1. 45-99.8 % w of a bituminous component having a penetration of less than 800 (0.1 mm) at 25.degree. C.,2. 0.1-30 %w of a lithium salt of a C.sub.10 -C.sub.40 (hydroxy) fatty acid, and3. 0.1-25 %w of a thermoplastic polymer, and(b) 0-70 %w of a filler having excellent self-adhesive properties even when applied on wet or wetted surfaces. They are cold applicable and shear-stable.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: June 1, 1982
    Assignee: Shell Oil Company
    Inventors: Jan Lijzenga, Gerrit Van Gooswilligen, Thomas C. Blanken