Hartmut Liehr

ZI Zimmer: 2 patents #4 of 61Top 7%

📍 Frankfurt am Main, DE: #22 of 113 inventorsTop 20%

Overall (1997): #39,209 of 185,788Top 25%

Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5686513	Process for the production of stabilizer concentrate for polyamide	—	1997-11-11
5627257	Process for the production of polyamides on the basis of .alpha.,.omega.-dinitriles	—	1997-05-06