** Shares of drug developer Tenax Therapeutics TENX.O
rise 74.4% to $15.2
** Co says the U.S. Patent and Trademark Office has notified
that it will receive additional patents for its experimental
drug for a type of heart disease
** The patent will cover methods of use of the drug and its
active ingredients
** The patent once issued will provide added intellectual
property protection for the drug through December 2040 - TENX
** Co to begin a late-stage study testing the drug in Q4
** Stock fell 93.3% in the last 12 months
(Reporting by Sneha S K)
((Sneha.SK@thomsonreuters.com;))