Patents by Inventor Jan Vis

Jan Vis 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).

  • Patent number: 4328112
    Abstract: An improved process for preparing a sulfur-containing composition useful as a lubricant additive wherein an organic carboxylic acid is sulfurized in the form of the acid or an ester or amide derivative thereof is disclosed. The improvement comprises using as the acid or acid portion of an ester or amide derivative, a carboxylic acid or mixture thereof obtained by telomerizing an ethylenically unsaturated compound under inert conditions in a reaction medium containing from about 10.sup.-3 to about 10.sup.-10 moles per liter of an at least trivalent manganese compound and one or more carbonyl compounds having at least one hydrogen atom on an alpha-carbon atom wherein at least 60 percent by weight of the total carbonyl-containing compound content is present as carboxylic anhydride and the molar ratio of the reacted quantity of ethylenically unsaturated compounds to the at least trivalent manganese compound is at least 4.
    Type: Grant
    Filed: January 19, 1981
    Date of Patent: May 4, 1982
    Assignee: Akzona Incorporated
    Inventors: Jan Vis, Willem J. de Klein
  • Patent number: 4283314
    Abstract: The present disclosure relates to a resin composition having improved internal and external lubricating properties. The resin compositions comprises polyvinyl chloride or a copolymer thereof and one or more branched-chain monocarboxylic acids and/or derivatives thereof. Such derivatives are selected from the group consisting of(a) esters of phenols or aromatic, aliphatic or cycloaliphatic alcohols having at least 1 to 10 primary or secondary hydroxyl groups;(b) amides of ammonia or aliphatic, cycloaliphatic or aromatic amines having at least 1 to 15 primary or secondary amino groups;(c) salts of alkali metals or alkaline earth metals, amphoteric metals, heavy metals, of ammonium or of a compound containing a tertiary amino group. The branched-chain monocarboxylic acids are telomeric acids obtained by the free radical addition of 1 mole of acetic anhydride to at least three moles of hexene and/or higher olefins containing up to 30 or more carbon atoms (C.sub.
    Type: Grant
    Filed: October 26, 1979
    Date of Patent: August 11, 1981
    Assignee: Akzona Incorporated
    Inventors: Jacobus J. Zeilstra, Willem J. de Klein, Joannes D. Bik, Jan Vis