Dirmstein
Germany
1
2012-10-04
The entities that hold a legal rights for patent applications filed by inventor Dirmstein Hugo:
Hugo Dirmstein from Dirmstein, DE has applied for patents for these inventions. The list has both pending applications and granted patents:
Method for distilling mixtures comprising ethylenediamine, N-methylethylenediamine, and water, and mixtures of ethylenediamine and N-methylethylenediamine having a low content of N-methylethylenediamine obtainable thereby
3270367 ⎘