Inventor · Langenfeld, DE

Andreas Bulan

57Patents
6h-index
78Co-inventors
75Inventor score

Filing activity: Sep 27, 1991 → Nov 5, 2020

Most-cited inventions

PatentTitleAreaCited byStatus
US8492303B2 Electrode and electrode coating Chemistry; Metallurgy 17 Active
US6852301B2 Method for producing silane Chemistry; Metallurgy 13 Expired
US9273404B2 Process for electrolysis of alkali metal chlorides with oxygen-consuming electrodes Chemistry; Metallurgy 10 Active
US7056484B2 Method for producing trichlorosilane Chemistry; Metallurgy 9 Expired
US6790339B2 Process for the electrochemical preparation of chlorine from aqueous solutions of hydrogen chloride Chemistry; Metallurgy 6 Expired
US6841047B2 Electrolysis cell, in particular for the electrochemical preparation of chlorine Chemistry; Metallurgy 6 Expired
US10224552B2 Gas diffusion electrode and process for production thereof Electricity 6 Active
US8153838B2 Process for producing isocyanates Chemistry; Metallurgy 6 Active
US9175135B2 Process for preparing diaryl carbonates and polycarbonates Emerging Cross-Sectional Technologies 5 Active
US8518231B2 Process for production of diaryl carbonate Chemistry; Metallurgy 4 Active
US5326437A Process for production of perfluoroalkysulphonyl fluorides Chemistry; Metallurgy 4 Expired
US8106144B2 Process for producing polycarbonate Performing Operations; Transporting 3 Active
US9150490B2 Process for preparing diaryl carbonates and polycarbonates Emerging Cross-Sectional Technologies 3 Active
US6838408B2 Method for producing gas diffusion electrodes Emerging Cross-Sectional Technologies 2 Expired
US8318971B2 Process for preparing methylenediphenyl diisocyanates Chemistry; Metallurgy 2 Active
US6395165B2 Process for preparing perfluorinated organic compounds by electrochemical fluorination Chemistry; Metallurgy 2 Expired
US9273403B2 Method for improving the performance of nickel electrodes Chemistry; Metallurgy 2 Active
US7128824B2 Method for electrolysis of aqueous solutions of hydrogen chloride Chemistry; Metallurgy 2 Expired
US9677183B2 Electrocatalyst, electrode coating and electrode for the preparation of chlorine Emerging Cross-Sectional Technologies 2 Active
US6699455B2 Process for preparing hydrogen fluoride in a rotary tube furnace Chemistry; Metallurgy 2 Expired
US9243337B2 Oxygen-consuming electrode with multilayer catalyst coating and process for the production thereof Emerging Cross-Sectional Technologies 2 Active
US6458333B1 Process for recycling alkali metal fluorides and/or difluorides Chemistry; Metallurgy 1 Expired
US8247098B2 Electrochemical cell Chemistry; Metallurgy 1 Active
US5411726A Process for purifying hydrogen fluoride Chemistry; Metallurgy 1 Expired
US9422631B2 Method of operating an oxygen-consuming electrode Chemistry; Metallurgy 1 Active

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