SIEGFRIED AG
52Patents
17Active
52Granted
39Portfolio score
Filing activity: Sep 17, 1973 → Dec 18, 2018 · 6 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4133903A | Process for preparing bitter beverages | Chemistry; Metallurgy | 42 | Expired |
| US4153803A | Cholesterol-lowering phenoxyalkanoic acid esters | Chemistry; Metallurgy | 29 | Expired |
| US4177350A | Imidazole ethyl oxyalkoxy derivatives and thio analogues thereof | Chemistry; Metallurgy | 14 | Expired |
| US4689233A | Coronary therapeutic agent in the form of soft gelatin capsules | Human Necessities | 12 | Expired |
| US4124767A | Imidazolyl-oxime ethers having anti-mycotic and bactericidal activity | Chemistry; Metallurgy | 10 | Expired |
| US4352931A | Lin-benzoaminopurinols | Chemistry; Metallurgy | 8 | Expired |
| US4668786A | P-fluorobenzoyl-piperidino alkyl theophylline derivatives | Human Necessities | 8 | Expired |
| US4223143A | Quinazoline derivatives | Chemistry; Metallurgy | 7 | Expired |
| US4603204A | Theophylline derivatives | Human Necessities | 7 | Expired |
| US4182902A | Novel cholesterol-lowering compounds | Chemistry; Metallurgy | 7 | Expired |
| US4210657A | Aryl imidazolyl vinyl ethers and processes for using same | Chemistry; Metallurgy | 6 | Expired |
| US4210656A | Imidazolyl vinyl ethers and process for preparing same | Chemistry; Metallurgy | 5 | Expired |
| US3947584A | Novel indolyl alkyl amines, method of producing same, and their use as anorectic agents | Chemistry; Metallurgy | 5 | Expired |
| US8101756B2 | Process for the preparation of quaternary N-alkyl morphin or morphinan alkaloid derivatives | Chemistry; Metallurgy | 4 | Active |
| US4330545A | Heterocyclic imidazolyl vinyl ethers and use of same as fungicides or bactericides | Human Necessities | 4 | Expired |
| US8921557B2 | Preparation of low impurity opiates in a continuous flow reactor | Chemistry; Metallurgy | 4 | Active |
| US4305942A | Xanthine oxidase inhibitor and therapeutic treatment using same | Human Necessities | 4 | Expired |
| US4275068A | Lipid lowering alkylene glycols and ester derivatives thereof | Chemistry; Metallurgy | 4 | Expired |
| US4483999A | Phenoxy alkanoic acid derivatives having the ability to lower the level of fatty substances in the blood | Chemistry; Metallurgy | 3 | Expired |
| US4463195A | Process for producing o-nitrobenzaldehyde | Chemistry; Metallurgy | 3 | Expired |
| US4214095A | Chlorobenzyl phenoxy alkoxylates | Chemistry; Metallurgy | 3 | Expired |
| US4550175A | Process for the stereospecific preparation of (Z)-1-(2,4-dichlorophenyl)-2-(imidazol-1-yl)-0-(2,4-dichlorobenzyl)-etha none oxime ether | Chemistry; Metallurgy | 3 | Expired |
| US4204998A | N-Amino indole derivatives having pharmacological activity | Chemistry; Metallurgy | 3 | Expired |
| US4474956A | Process for the preparation of 4-hydroxy-2-methyl-N-2-pyridyl-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxide | Chemistry; Metallurgy | 2 | Expired |
| US10413512B2 | Nicotine-containing granulate | Human Necessities | 2 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.