Werner Stegmann
13Patents
6h-index
12Co-inventors
55Inventor score
Filing activity: Feb 14, 1985 → Oct 23, 1992
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4973701A | Liquid substituted 2H-benzotriazole mixtures, stabilized compositions and processes for preparing the liquid mixtures | Physics | 21 | Expired |
| US4921966A | Process for the preparation of liquid mixtures of alkylated 2-(2-hydroxyphenyl)benzotriazoles | Physics | 20 | Expired |
| US5229521A | Process for the preparation of symmetrical 2,2-methylenebisbenzotriazolyl phenols | Chemistry; Metallurgy | 15 | Expired |
| US5240975A | Liquid substituted 2H-benzotriazole mixtures, stabilized compositions | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5095062A | Stabilized compositions containing liquid substituted 2H-benzotriazole mixtures | Physics | 10 | Expired |
| US4874885A | Process for the preparation of mercaptomethylphenols | Chemistry; Metallurgy | 7 | Expired |
| US4863982A | Isocyanuric acid derivatives | Chemistry; Metallurgy | 3 | Expired |
| US4623745A | Process for producing phenolic thiocarboxylic esters | Chemistry; Metallurgy | 2 | Expired |
| US4691058A | Process for producing 1-hydroxy ketones | Chemistry; Metallurgy | 2 | Expired |
| US5157141A | Process for the preparation of hydroxybenzylphosphonates | Chemistry; Metallurgy | 1 | Expired |
| US5258540A | Cyclohexyl substituted hydroxybenyzlphosphonates | Chemistry; Metallurgy | 1 | Expired |
| US5047591A | Single-stage process for producing bis-(amino-nitrophenyl)-methane | Chemistry; Metallurgy | 0 | Expired |
| US5110978A | Process for the preparation of phenolic thiocarboxylic acid esters | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.