TK

Tetsuo Kumasaka

OC Okutama Kogyo Co.: 2 patents #4 of 14Top 30%
Overall (All Time): #2,247,203 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5879442 Aqueous slurry of precipitated calcium carbonate and ground calcium carbonate in combination Hiroyuki Nishiguchi, Kazuhisa Shimono 1999-03-09
5230734 Calcium-magnesium carbonate composite and method for the preparation thereof Hideki Horiuchi, Fumihiko Kaneko, Tatsuo Takano 1993-07-27