Ralf-Thomas Rahn
19Patents
5h-index
44Co-inventors
62Inventor score
Filing activity: Aug 2, 1995 → Jun 27, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8603211B2 | Mixture for the treatment of urea-containing fertilizers | Emerging Cross-Sectional Technologies | 37 | Active |
| US6846389B2 | Method for distillative separation of mixtures containing tetrahydrofuran, γ-butyrolactone and/or 1,4-butanediol | Emerging Cross-Sectional Technologies | 25 | Expired |
| US8075659B2 | Preparations with improved urease-inhibiting effect and urea-containing fertilizers containing the latter | Emerging Cross-Sectional Technologies | 19 | Active |
| US6433192B1 | Method for producing mixtures of 1,4-butanediol, tetrahydrofuran and &ggr;-butyrolactone | Chemistry; Metallurgy | 16 | Expired |
| US6888011B2 | Porous catalyst for the hydrogenation of maleic anhydride to tetrahydrofuran | Performing Operations; Transporting | 5 | Expired |
| US6350924B1 | Method for producing 1,4-butanediol | Chemistry; Metallurgy | 5 | Expired |
| US6831182B2 | Method for the hydrogenation of maleic anhydride and related compounds in two serial reaction zones | Chemistry; Metallurgy | 4 | Expired |
| US8110536B2 | Bleach systems enveloped with polymeric layers | Human Necessities | 3 | Active |
| US6958404B2 | Method for the hydrogenation of maleic anhydride and related compounds in a fluid bed reactor | Chemistry; Metallurgy | 2 | Expired |
| US6730800B2 | Method for the production of tetrahydrofuran | Chemistry; Metallurgy | 2 | Expired |
| US6921830B2 | Method for purifying an organic solvent for the purposes of absorption of maleic acid anhydride | Chemistry; Metallurgy | 2 | Expired |
| US10150712B2 | Compositions with improved urease-inhibiting effect comprising (thio)phosphoric acid triamide and further compounds | Chemistry; Metallurgy | 2 | Active |
| US7253280B2 | Two-stage reactor for the production of melamine | Chemistry; Metallurgy | 2 | Expired |
| US7217679B2 | Catalytic coating for the hydrogenation of maleic anhydride and related compounds to give γ-butyrolactone, tetrahydrofuran and derivatives thereof | Performing Operations; Transporting | 1 | Expired |
| US6346629B1 | Method for producing butyrolactones | Chemistry; Metallurgy | 1 | Expired |
| US6054628A | Reacting Grignard compounds with carbonyl compounds and ensuing hydrolysis | Chemistry; Metallurgy | 1 | Expired |
| US5603813A | Purifying distillation of vinyl formate | Chemistry; Metallurgy | 0 | Expired |
| US6316680A | Isolation of .alpha.-ethynyl carbinols by distillation | Chemistry; Metallurgy | 0 | Expired |
| US6329532A | Method for separating maleic anhydride from maleic anhydride-containing mixtures by stripping | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.