Inventor · disambiguated record
Friedrich Engel
Also filed as: ENGEL FRIEDRICH
3 granted patents·14 citations·filing 1981–1998
63Inventor score
Top patents by PatentIndex Score
3 records- 0155US4541587AHub for magnetic tape cassettes, especially compact cassettes, and magnetic tape cassette possessing one or more such hubsBASF AG·Filed 1984·Granted Sep 17, 1985·8 cites·11 claims
- 0249US4515331AHub for magnetic tape cassettes, especially compact cassettes, and magnetic tape cassette possessing one or more such hubsBASF AG·Filed 1981·Granted May 7, 1985·6 cites·12 claims
- 0322US6241888B1Method of controlling the phosphorus concentration in biological wastewater purification plantsHOECHST AG·Filed 1998·Granted Jun 5, 2001·0 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →