IH

Ivan Helfert

📍 Lučenec, SK: #9 of 54 inventorsTop 20%
Overall (All Time): #2,287,511 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5424456 N-arylalkylderivatives of 2-aminomethyl-2,3-dihydro-1,4-benzodioxine and the process of preparation thereof Gabriel Butora, Miroslav Rajsner, Vaclav Trcka 1995-06-13
4847403 2-Isopropyl-2-(2-methylphenyl)-5-(N-methyl-N-homoveratr ylamino)-valeronitrile and method for producing same Luedvik Blaha, Miroslav Rajsner, Vaclav Trcka 1989-07-11