** Shares of 4DS Memory 4DS.AX surge as much as 5.56% to
A$0.143, their sharpest rise since Sep. 22
** Semiconductor development firm announces https://www.asx.com.au/asxpdf/20210929/pdf/451051vst34yq5.pdf
an additional U.S. patent grant that brings co's portfolio of
granted patents to 32
** Says patent grant for co's conductive amorphous oxide
contact layers is strategic for storage tech in mobile and cloud
** 4DS hits its highest since Sep. 23
** Stock rose 8% this year, as of last close
(Reporting by Dhriti Garg in Bengaluru)
((dhriti.garg@thomsonreuters.com))