US Patent Issued to TRISA HOLDING on March 31 for "Toothbrush with injection-moulded bristles and method and apparatus for producing the same" (Swiss Inventors)

ALEXANDRIA, Va., March 31 -- United States Patent no. RE50,842, issued on March 31, was assigned to TRISA HOLDING AG (Triengen, Switzerland).

"Toothbrush with injection-moulded bristles and method and apparatus for producing the same" was invented by Roger Kirchhofer (Reitnau, Switzerland), Peter Zurfluh (Alpnach, Switzerland) and Michael Schar (Egolzwil, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A toothbrush having a brush body and a bristle carrier that is produced from a hard material using an injection molding method and having injection-molded bristles that protrude from the bristle carrier. The injection molded bristles are produced from a bristle material using the injection molding m...