Hans-Juergen Weyer
16Patents
8h-index
14Co-inventors
61Inventor score
Filing activity: Mar 7, 1990 → Apr 24, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5099074A | Process for the preparation of polyether glycols | Chemistry; Metallurgy | 29 | Expired |
| US5157127A | Preparation of N-substituted pyrrolidones | Chemistry; Metallurgy | 13 | Expired |
| US5416240A | Preparation of poloxy-alkylene glycols | Chemistry; Metallurgy | 12 | Expired |
| US5434273A | Preparation of N-substituted 2-pyrrolidones | Chemistry; Metallurgy | 11 | Expired |
| US5276165A | Preparation of N-substituted lactams | Chemistry; Metallurgy | 10 | Expired |
| US5391771A | Hydrogenation of citric acid | Chemistry; Metallurgy | 9 | Expired |
| US5536854A | Preparation of 2-methyl-1,4-butanediol and 3-methyltetrahydrofuran | Chemistry; Metallurgy | 9 | Expired |
| US5414143A | Preparation of polyoxyalkylene glycol monoethers of monohydric alcohols | Chemistry; Metallurgy | 8 | Expired |
| US5395959A | Adjustment of the average molecular weight of polyoxyalkylene glycols and polyoxyalkylene derivatives in the heteropolyacid-catalyzed polymerization of cyclic ethers and/or acetals with ring cleavage | Chemistry; Metallurgy | 7 | Expired |
| US5008408A | Preparation of 1,4-butanediol and tetrahydrofuran | Chemistry; Metallurgy | 6 | Expired |
| US5561217A | Preparation of polyether glycols | Chemistry; Metallurgy | 5 | Expired |
| US5097077A | Purification of heteropolyacid-containing polyalkylene ether glycols | Chemistry; Metallurgy | 4 | Expired |
| US5659068A | Preparation of polyoxyalkylene glycol monoesters of monocarboxylic acids | Chemistry; Metallurgy | 3 | Expired |
| US5714638A | Preparation of polyoxyalkylene glycol monoether of tert-butyl alcohol and product | Chemistry; Metallurgy | 2 | Expired |
| US5371242A | Preparation of products of the reduction of 4-hydroxybutyric acid derivatives | Chemistry; Metallurgy | 1 | Expired |
| US5387701A | Preparation of 4-hydroxymethyltetrahydropyran | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.