JH

John Heffer

JL Johnson Matthey Public Limited: 1 patents #1 of 1Top 100%
Overall (1982): #52,875 of 81,411Top 65%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4324700 Process for preparing platinum group metal catalysts — 1982-04-13