Patents by Inventor David John Judd

David John Judd 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).

  • Method of making solid fertilizer herbicide granules
    Patent number: 4065289
    Abstract: A herbicidal composition containing a plant fertilizer component comprising a coherent extrudate containing an intimate dispersion of (A) 1 to 100 parts by weight of a plant fertilizer component; and (B) one part by weight of a herbicide component having a melting or softening point below 145.degree. C and below that of component (A) when mixed therewith said component (B) also having a solubility in water not exceeding lg/liter at 20.degree. C. whereby release of said fertilizer component from said extrudate in use thereof is retarded.
    Type: Grant
    Filed: September 12, 1973
    Date of Patent: December 27, 1977
    Assignee: Murphy Chemical Limited
    Inventor: David John Judd