Inventor · Middletown, OH, US

Martin Littmann

23Patents
5h-index
47Co-inventors
69Inventor score

Filing activity: Oct 18, 1978 → Apr 2, 2019

Most-cited inventions

PatentTitleAreaCited byStatus
US4319936A Process for production of oriented silicon steel Electricity 11 Expired
US5183939A Process for the racemization of optically active 1-aryl-alkylamines Chemistry; Metallurgy 8 Expired
US4988829A Process for the preparation of 2-(4-chlorophenylethyl)-2-tert.-butyl-oxirane Chemistry; Metallurgy 7 Expired
US4202711A Process for producing oriented silicon iron from strand cast slabs Chemistry; Metallurgy 7 Expired
US4478653A Process for producing grain-oriented silicon steel Chemistry; Metallurgy 5 Expired
US10196410B2 Process for producing phosphorus-containing cyanohydrin esters Human Necessities 2 Active
US10611785B2 Process for producing phosphorus-containing cyanohydrin esters Chemistry; Metallurgy 1 Active
US10316048B2 Process for producing phosphorus-containing cyanohydrin esters Chemistry; Metallurgy 1 Active
US9850263B2 Process for preparing phosphorus containing cyanohydrins Chemistry; Metallurgy 1 Active
US6034278A Method for producing optically active 1-phenylethylamines Chemistry; Metallurgy 0 Expired
US5126454A Process for the preparation of sulphonylisoureas Chemistry; Metallurgy 0 Expired
US8835645B2 Process for preparing cyanimino-1,3-thiazolidines Chemistry; Metallurgy 0 Active
US9670135B2 Preparation of halogenated di-substituted benzylamines, particularly halogenated dialkylbenzylamines Chemistry; Metallurgy 0 Active
US11220487B2 Process for preparing 3,4-dichloro-n-(2-cyanophenyl)-5-isothiazolecarboxamide Chemistry; Metallurgy 0 Active
US9376374B2 Process for preparing cis-alkoxy-substituted spirocyclic phenylacetylamino acid esters and cis- alkoxy-substituted spirocyclic 1H- pyrrolidine-2,4-dione derivatives Chemistry; Metallurgy 0 Active
US11161840B2 Process for producing heterocylic compounds Chemistry; Metallurgy 0 Active
US9840459B2 Process for preparing cis-alkoxy-substituted spirocyclic phenylacetylamino acid esters and cis-alkoxy-substituted spirocyclic 1H-pyrrolidine-2,4-dione derivatives Chemistry; Metallurgy 0 Active
US9464038B2 Method for producing specific oximes and oximethers Chemistry; Metallurgy 0 Active
US10577320B2 Method for preparing cis-alkoxy-substituted spirocyclic 1-H-pyrrolidine-2,4-dione derivatives Chemistry; Metallurgy 0 Active
US11339137B2 Method for producing 3,4-dichloro-N-(2-cyanophenyl)-5-isothiazolecarboxamide Chemistry; Metallurgy 0 Active
US8785673B2 Method for producing 2-chloroallyl thiocyanate and 2-chloroallyl isothiocyanate Chemistry; Metallurgy 0 Active
US10961265B2 Process for preparing phosphorus containing cyanohydrins Chemistry; Metallurgy 0 Active
US10941167B2 Process for producing phosphorus-containing cyanohydrin esters Chemistry; Metallurgy 0 Active

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