Hermann Luyken
87Patents
16h-index
93Co-inventors
87Inventor score
Filing activity: Aug 30, 1989 → Feb 26, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7528275B2 | Method for the production of adipodinitrile by hydrocyanation of 1,3-butadiene | Chemistry; Metallurgy | 36 | Expired |
| US6147208A | Process for simultaneously preparing caprolactam and hexamethylene diamine | Emerging Cross-Sectional Technologies | 36 | Expired |
| US6462220B1 | Method for simultaneous preparation of 6-aminocapronitrile and hexamethylene diamine | Chemistry; Metallurgy | 30 | Expired |
| US7541486B2 | Method for producing 3-pentenenitrile | Chemistry; Metallurgy | 28 | Expired |
| US7084294B2 | Method for the recycling of a Lewis acid | Emerging Cross-Sectional Technologies | 26 | Expired |
| US7538240B2 | Method for the hydrocyanation of butadiene | Chemistry; Metallurgy | 25 | Active |
| US7439381B2 | Hydrocyanation method | Chemistry; Metallurgy | 25 | Expired |
| US6699960B1 | Method for producing polyamides from dinitriles and diamines | Chemistry; Metallurgy | 23 | Expired |
| US7521575B2 | Sterically hindered chelate phosphinite-phosphite ligand, catalyst, comprising at least one nickel(0) complex stabilized by said ligand and method for production of nitriles | Performing Operations; Transporting | 22 | Expired |
| US6265602A | Method for hydrogenating aliphatic alpha-, omega-dinitriles | Chemistry; Metallurgy | 22 | Expired |
| US7700795B2 | Use of azeotropically dried nickel(ii) halogenides | Performing Operations; Transporting | 22 | Active |
| US5496941A | Process for continuous purification of crude caprolactam prepared from 6-aminocapronitrile | Emerging Cross-Sectional Technologies | 21 | Expired |
| US7935229B2 | Extraction of nickel (0) complexes from nitrile mixtures with reduced rag formation | Emerging Cross-Sectional Technologies | 18 | Active |
| US6297394A | Iron-based catalyst for hydrogenating alpha-, omega-dinitriles | Chemistry; Metallurgy | 16 | Expired |
| US7781608B2 | Production of 3-pentenenitrile from 1,3-butadiene | Chemistry; Metallurgy | 16 | Active |
| US7816551B2 | Method for producing dinitriles | Chemistry; Metallurgy | 16 | Expired |
| US6147247A | Process for simultaneously preparing 6-aminocapronitrile and hexamethylene diamine | Chemistry; Metallurgy | 15 | Expired |
| US7147757B2 | Method for separating an azepine derivative out of a mixture containing an amine an azepine derivative | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7612224B2 | Isomerisation of cis-2-pentenenitrile to form 3-pentenenitrile in a reactive distillation | Emerging Cross-Sectional Technologies | 13 | Active |
| US7566800B2 | Homogeneous isomerization of cis-2-pentene nitrile to form 3-pentene nitrile | Emerging Cross-Sectional Technologies | 12 | Active |
| US7550407B2 | System suitable for the hydrocyanation of olefinically unsaturated compounds | Performing Operations; Transporting | 12 | Expired |
| US7705171B2 | Process for producing nickel(0)-phosphorus ligand complexes | Performing Operations; Transporting | 12 | Active |
| US7361778B2 | Method for the isomerization of cis-2-pentenenitrile to form trans-3-pentenenitrile | Chemistry; Metallurgy | 11 | Expired |
| US7462263B2 | Method for purifying hydrocyanic acid | Performing Operations; Transporting | 9 | Expired |
| US7851656B2 | Method for producing organic phosphorous compounds containing halogens | Chemistry; Metallurgy | 9 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.