Inventor

ENGEL FRIEDRICH

DE3 patents

⚠️ This page may combine multiple inventors who share the name “ENGEL FRIEDRICH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BASF AG

2 patents

US4541587ASep 17, 1985

Hub for magnetic tape cassettes, especially compact cassettes, and magnetic tape cassette possessing one or more such hubs

BASF AG8 citations71

US4515331AMay 7, 1985

Hub for magnetic tape cassettes, especially compact cassettes, and magnetic tape cassette possessing one or more such hubs

BASF AG6 citations69

HOECHST AG

1 patent

US6241888B1Jun 5, 2001

Method of controlling the phosphorus concentration in biological wastewater purification plants

HOECHST AG0 citations45