Patents by Inventor John Robert Main

John Robert Main 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).

  • Multi-barrel dispensing apparatus
    Patent number: 6554161
    Abstract: A dispensing apparatus for a liquid which relies on molded components capable of being interchanged to provide, in addition to incremental adjustment within a range of dosages allowed by stroke limiting rotational adjustment of the relativity of escarpment and abutment members, the change of one or both the spread of the dosage range and at least one limit of the range.
    Type: Grant
    Filed: March 20, 2001
    Date of Patent: April 29, 2003
    Assignee: Prima Technologies Limited
    Inventor: John Robert Main
  • Multi-barrel dispensing apparatus
    Publication number: 20020011501
    Abstract: A dispensing apparatus for a liquid which relies on moulded components capable of being interchanged to provide, in addition to incremental adjustment within a range of dosages allowed by stroke limiting rotational adjustment of the relativity of escarpment and abutment members, the change of one or both the spread of the dosage range and at least one limit of the range.
    Type: Application
    Filed: March 20, 2001
    Publication date: January 31, 2002
    Inventor: John Robert Main