KH

Kazuyuki Hatakeyama

HC Heiwa Kagaku Industry Co.: 5 patents #1 of 2Top 50%
Overall (All Time): #818,417 of 4,157,543Top 20%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
11427368 Manufacturing method for double walled container Harumasa Hatakeyama 2022-08-30
10954022 Double walled container Harumasa Hatakeyama 2021-03-23
10786941 Double-layered container and method for production of the same Harumasa Hatakeyama 2020-09-29
10518462 Double-walled container manufacturing method Harumasa Hatakeyama 2019-12-31
10315803 Double container assembly and manufacturing method therefor Harumasa Hatakeyama 2019-06-11
6391972 Plastic articles 2002-05-21