Loewenstein rhymes with:
hohenstein, augenstein, breidenstein, breitenstein, eisenstein, falkenstein, hauenstein, hertenstein, hohenstein, horenstein, hottenstein, katzenstein, klopfenstein, laubenstein, levenstein, orenstein, rubenstein
Loewenstein sounds like:
lamston, langdon, langston, langton, lansdown, lansdowne, lanston, lengthen, lenington, limestone, longden, longtime, longtin, longton, lowenstein, lumsden, lunchtime