Inventor · Kleinostheim, DE

Ralf Karch

50Patents
7h-index
57Co-inventors
75Inventor score

Filing activity: Jun 10, 1999 → Jul 6, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
US7671224B2 Use of a phosphorus containing ligand and a cyclic organic ligand in a transition metal compound Chemistry; Metallurgy 39 Active
US6156449A Catalyst layer for polymer electrolyte fuel cells Emerging Cross-Sectional Technologies 31 Expired
US9353139B2 Metal complexes with N-Aminoamidinate ligands Performing Operations; Transporting 30 Active
US6191297A Process for the preparation of organosilanes functionalized in the 3-position Chemistry; Metallurgy 9 Expired
US6346562B1 Cross-linkable mixtures and a method for the production and utilization thereof Chemistry; Metallurgy 8 Expired
US8288558B2 Metathesis catalysts Performing Operations; Transporting 8 Active
US6153782A Method of producing propylsilanes Chemistry; Metallurgy 7 Expired
US9617284B2 Method for producing alkyl-indium compounds and the use thereof Chemistry; Metallurgy 3 Active
US9856280B2 Method for producing aqueous preparations of complexes of platinum group metals Chemistry; Metallurgy 2 Active
US9108985B2 Process for preparing trialkylgallium compounds Emerging Cross-Sectional Technologies 2 Active
US10954261B2 Method for producing aqueous preparations of complexes of platinum group metals Chemistry; Metallurgy 2 Active
US8536344B2 Metathesis catalysts Performing Operations; Transporting 2 Active
US9540401B2 Method for producing alkyl-indium compounds and the use thereof Chemistry; Metallurgy 2 Active
US7951969B2 Process for the preparation of iridium acetate Chemistry; Metallurgy 1 Active
US8716509B2 Process for preparing ruthenium(0)-olefin complexes Performing Operations; Transporting 1 Active
US8288534B2 Process for the preparation a ruthenium complex Chemistry; Metallurgy 1 Active
US8703985B2 Method for preparation of ruthenium-indenylidene carbene catalysts Chemistry; Metallurgy 1 Active
US8846938B2 Method for preparation of ruthenium-based metathesis catalysts with chelating alkylidene ligands Performing Operations; Transporting 1 Active
US6686495B2 Process for the preparation of mono-, bi- or poly-functional biaryls Chemistry; Metallurgy 1 Expired
US12091427B2 Metal complexes for gas-phase thin-film deposition Chemistry; Metallurgy 0 Active
US9163045B2 Process for preparing diketonato-rhodium(I)-carbonyl complexes Chemistry; Metallurgy 0 Active
US12410205B2 Trimethylplatinum(IV) iodide Chemistry; Metallurgy 0 Active
US10632097B2 Organometallic compound Physics 0 Active
US8829220B2 Process for preparing dienyl-ruthenium complexes Chemistry; Metallurgy 0 Active
US10584142B2 Preparation of Rhodium(III)-2-ethylhexanoate Chemistry; Metallurgy 0 Active

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