Patents by Inventor Dhafir Yusuf Wadden

Dhafir Yusuf Wadden 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 dicyanobutene
    Patent number: 4048216
    Abstract: Butadiene is converted directly to dicyanobutene by reacting with hydrogen cyanide and oxygen or an oxygen-containing gas in the presence of a catalyst comprising copper ions and halide ions and of a solvent for the catalyst.
    Type: Grant
    Filed: September 8, 1976
    Date of Patent: September 13, 1977
    Assignee: Imperial Chemical Industries Limited
    Inventor: Dhafir Yusuf Wadden