Patents by Inventor Abderrahim Yassar

Abderrahim Yassar 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).

  • Preparation process of polymer, and organo-ferromagnetic material
    Patent number: 5272238
    Abstract: The present invention provides a preparation process of a polymer which is characterized by reacting a specified metallocene which metal is a transition element of the group IV to group VIII in the periodic table, with an organic alkali metal compound and successively reacting with the compound represented by the formula Y--(R.sup.11).sub.m --X wherein R.sup.11 is a vinylene, phenylene, thienylene, and the like, X and Y are a hydrogen atom or halogen atom, and m is an integer of one or more, to obtain the polymer represented by the following formula: ##STR1## wherein n is an integer of 2 or more; further provides an organo-ferromagnetic material obtained by oxidizing said polymer, and a novel conjugated polymer containing ferrocene units.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: December 21, 1993
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Francis Garnier, Abderrahim Yassar