It appears that there is a patent (filed 2002, published 2003) on "blended toothpaste formulas and method for manufacture", claiming in part "A toothpaste as de

It appears that there is a patent (filed 2002, published 2003) on "blended toothpaste formulas and method for manufacture", claiming in part "A toothpaste as defined in claim 1 wherein the stimulant is caffeine". https://www.google.com/patents/US20030147817 https://www.google.com/patents/US20030147817 I don't know how to read patents, so I don't know if this is a relevant patent or not.