Patents by Inventor Platt W. Hill

Platt W. Hill 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).

  • Burn-resistant Japanese Yew
    Patent number: PP4802
    Abstract: A Japanese Yew plant has been discovered and asexually reproduced which is resistant to "winter burn" from severe winter weather in cold extremes of temperate zone climates. The plant has flat needles, shiny green on top and paler green below, the terminal ends having single sharp points. The bark of the stems is reddish brown and glossy. The buds are ovoid oblong, green in the spring and summer, and change to brown in the fall. The foliage is dense and tends to spread.
    Type: Grant
    Filed: November 28, 1979
    Date of Patent: January 19, 1982
    Assignee: D. Hill Nursery
    Inventor: Platt W. Hill