Patents by Inventor Harm Mulder

Harm Mulder 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 of copolymers
    Patent number: 5382653
    Abstract: A process for the preparation of linear alternating copolymers of carbon monoxide and an ethylenically unsaturated compound by polymerizing the monomers in the presence of a suitable catalyst system, one or more components present in the reaction mixture being contaminated with alkali(ne earth) metal salt(s), which process involves a treatment by which at least part of the alkali(ne earth) metal salt is removed such that the total amount of alkali(ne earth) metals present in the copolymerization product is less than 1 part per million by weight; a copolymer composition comprising said copolymer, an alkali(ne earth) metal salt contaminant and a stabilizing quantity of a substance which is able to bind at least part of the alkali(ne earth) metal salt.
    Type: Grant
    Filed: November 23, 1993
    Date of Patent: January 17, 1995
    Assignee: Shell Oil Company
    Inventors: Johannes C. M. Jordaan, Wilhelmus P. Mul, Abraham A. Smaardijk, Jan Harm Mulder, Eric-Jack Gerard, Peter W. Lednor