Hisayuki Watanabe has been granted 13 US patents while listed as an inventor at Alpine Electronics. The first was granted in 1998 and the most recent in June 2018. Hisayuki Watanabe ranks #362,438 of 4,157,543 US inventors in our database (top 8.7%). Patent records list Hisayuki Watanabe in Iwaki, JP.