Patents by Inventor Rodolfo Ripa

Rodolfo Ripa 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 partially converting wood into a lignin plastic polymer
    Patent number: 4026847
    Abstract: Method of partially converting wood into plastic material by impregnating the wood with a phenol and substances which form a reaction product which forms a prepolymer with the lignin in the wood, heating said impregnated wood to form said reaction product and pre-polymer, and thus applying further heat and pressure to said impregnated wood to form a copolymer between said pre-polymer and the lignin in said wood.
    Type: Grant
    Filed: May 13, 1975
    Date of Patent: May 31, 1977
    Assignee: Universidad Tecnia Federico Santa Maria
    Inventors: Rodolfo Ripa, Alberto Garcia