Patents by Inventor Richard G. Ayres

Richard G. Ayres 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).

  • Bubble cap and riser construction
    Patent number: 4305895
    Abstract: A vapor riser for a bubble cap formed of plastic material is threadedly attached to a plate in a rectifying column, and a plastic bubble cap is secured to the riser. The bubble caps are releasably secured by integral, interlocking elements on the risers and bubble caps.
    Type: Grant
    Filed: May 5, 1980
    Date of Patent: December 15, 1981
    Inventors: Rodney T. Heath, Richard G. Ayres