Patents by Inventor Lawrence Joseph Logan

Lawrence Joseph Logan 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).

  • Conjugate filaments
    Patent number: 4115620
    Abstract: Conjugate filaments which exhibit a high degree of spontaneous crimp and good modulus are described. The filaments comprise at least 2 components, one of which being a blend of polypropylene with 5 to about 50% of certain low molecular weight hard resins derived from hydrocarbons having at least 4 carbon atoms or rosin derivatives and another component being polypropylene or a blend of polypropylene and a different amount of the hard resin or rosin derivative.
    Type: Grant
    Filed: January 19, 1977
    Date of Patent: September 19, 1978
    Assignee: Hercules Incorporated
    Inventors: Rakesh Kumar Gupta, George Jurkiewitsch, Lawrence Joseph Logan