Patents by Inventor C. Duane Englehardt

C. Duane Englehardt 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).

  • Patent number: 5477511
    Abstract: Disclosed are means and method to implement a portable and fully functional audio data recording and processing system. Voice data is received, converted to digital representations, compressed and stored in solid state memories. Predefined and user defined data categories are established to enable the operator to efficiently organize data recording and retrieval actions. Data transmission means are provided, and transcription from spoken word to textual information is supported. The use of the present invention as a documentation instrument is described. The integration of the invention with a Charge Coupled Device for recording visual information is presented.
    Type: Grant
    Filed: July 13, 1994
    Date of Patent: December 19, 1995
    Inventor: C. Duane Englehardt