Patents by Inventor Nallan C. A. Chari

Nallan C. A. Chari 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).

  • Multipurpose hearing aid maintenance device
    Patent number: 5404105
    Abstract: This invention deals with a multipurpose hearing aid maintenance device. Its brush is used to clean a hearing aid, especially the receiver tube opening. The magnetized electrical terminal or an optional magnetic tip serves to hold small (size 13 or smaller) batteries to place them in a heating aid battery compartment or remove them from the compartment. Also, the magnetized electrical terminal holds the cell and serves as one of the two electrical terminals to test (GO/NO GO) electrical charge of the cells. Finally, the device can store one or two spare batteries.
    Type: Grant
    Filed: July 12, 1993
    Date of Patent: April 4, 1995
    Inventor: Nallan C. A. Chari