Daniel A. E. Hoffner — 2 Patents

Daniel A. E. Hoffner has been granted 2 US patents. The first was granted in 1981 and the most recent in October 1987. Daniel A. E. Hoffner ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Daniel A. E. Hoffner in Thann, FR.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4702776	Preparation of pigmentary red iron oxides	Jean-Marie C. Trautmann	1987-10-27
4261966	Process for the preparation of pigment grade iron oxides from ferrous sulphate and the resulting Fe.sub.2 O.sub.3 pigments	Pierre Portes, Jean-Marie C. Trautmann	1981-04-14

Daniel A. E. Hoffner — 2 Patents

Issued Patents All Time

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