Inventor · Hanerau-Hademarschen, DE

Friedhelm Risse

7Patents
2h-index
18Co-inventors
48Inventor score

Filing activity: Aug 12, 1994 → Nov 19, 2013

Most-cited inventions

PatentTitleAreaCited byStatus
US5487312A Gas analyzer with regulated measurement gas feed and dynamic dilution of samples Emerging Cross-Sectional Technologies 8 Expired
US5563109A Process for the manufacture of catalytically active gas diffusion electrodes Emerging Cross-Sectional Technologies 7 Expired
US8338631B2 Process for preparing dialkyl carbonates from alkylene carbonates and alcohols Emerging Cross-Sectional Technologies 1 Active
US8552214B2 Process for preparing dialkyl carbonates Emerging Cross-Sectional Technologies 1 Active
US9475751B2 Process for producing dialkyl carbonates Chemistry; Metallurgy 1 Active
US8987446B2 Bimetallic complexes and the use thereof in producing diaryl carbonate Chemistry; Metallurgy 0 Active
US8304509B2 Process for preparing diaryl carbonates from dialkyl carbonates Chemistry; Metallurgy 0 Active

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