Yasuo Umekawa

KC Koatsu Gas Kogyo Co.: 2 patents #10 of 20Top 50%

Overall (All Time): #2,312,254 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
D330160	Package of containers	—	1992-10-13
D309716	Two piece container cap	—	1990-08-07