Inventor · Grefrath, DE

Eckehard Eisermann

5Patents
4h-index
6Co-inventors
46Inventor score

Filing activity: Mar 1, 1978 → Nov 15, 1993

Most-cited inventions

PatentTitleAreaCited byStatus
US5330160A Gas stir plug wear indicator including low melting point component and method of use Chemistry; Metallurgy 18 Expired
US5421561A Gas stir devices with refractory material erosion depth indicator and method of making the same Chemistry; Metallurgy 5 Expired
US4257542A Slide gate for containers holding liquid metal melt Chemistry; Metallurgy 4 Expired
US5118016A Bottom pour tiles with self sealing joint for pouring liquid steel Emerging Cross-Sectional Technologies 4 Expired
US4241905A Head or slide plate for a molten-metal slide gate Performing Operations; Transporting 2 Expired

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.