** Shares of Brainchip Holdings Ltd BRN.AX soar as much as
25.8% to A$2.34, hitting a record high
** The software firm announces grant of U.S. patent, which
extends protection to Brainchip's learning function from U.S.
Patents and Trademarks Office urn:newsml:reuters.com:*:nASX7lSdDv
** Adds that this is the 8th patent secured by co since 2008
** More than 66.5 mln shares change hands, compared with the
30-day average volume of about 28.5 mln shares
** Stock has risen 173.5% this year, as of last close
(Reporting by Jaskiran Singh)
((Jaskiran.Singh@thomsonreuters.com;))