Ibaraki
Japan
3
2019-01-03
The entities that hold a legal rights for patent applications filed by inventor Echizen Masashi:
Masashi Echizen from Ibaraki, JP has applied for patents for these inventions. The list has both pending applications and granted patents:
Spiral membrane element
#2 | 2016-09-29Composite semi-permeable membrane
#3 | 2010-05-27Method of membrane separation and membrane separation apparatus
6282585 ⎘