Alfred Oftring
99Patents
13h-index
136Co-inventors
87Inventor score
Filing activity: Dec 3, 1985 → Sep 5, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5786313A | Use of glycine-N,N-diacetic acid derivatives as biodegradable complexing agents for alkaline earth metal ions and heavy metal ions and process for the preparation thereof | Chemistry; Metallurgy | 58 | Expired |
| US4816553A | Polyacetals, preparation thereof from dialdehydes and polyolcarboxylic acids, and use of same | Chemistry; Metallurgy | 51 | Expired |
| US5741947A | Preparation of alkoxylation products in the presence of mixed hydroxides modified with additives | Chemistry; Metallurgy | 36 | Expired |
| US5849950A | Preparation of glycine-N,N-diacetic acid derivatives | Chemistry; Metallurgy | 25 | Expired |
| US5009805A | Liquid detergent with copolymer additive | Chemistry; Metallurgy | 23 | Expired |
| US5179201A | Alkyl mono-and polyglucoside ether carboxylates, and their preparation and use thereof | Chemistry; Metallurgy | 20 | Expired |
| US5019296A | Serine-N,N-diacetic acid and derivatives as complexing agents and detergents containing same | Chemistry; Metallurgy | 20 | Expired |
| US6204238A | Fatty acid derivatives and their use as surfactants in detergents and cleaners | Chemistry; Metallurgy | 18 | Expired |
| US6380410B1 | Fatty acid derivatives and their use as surfactants in detergents and cleaners | Chemistry; Metallurgy | 16 | Expired |
| US6004923A | Fatty acid derivatives and their use as surfactants in detergents and cleaners | Chemistry; Metallurgy | 15 | Expired |
| US5508394A | Citric esters of polyhydroxy compounds and use thereof in detergents | Chemistry; Metallurgy | 14 | Expired |
| US6034257A | Method for separating glycerin from reaction mixtures containing glycerin and fatty acid amides, alkoxylated amides obtained therefrom and the use thereof | Chemistry; Metallurgy | 14 | Expired |
| US4973730A | Preparation of serine-N,N-diacetic acid and derivatives as complexing agents and detergents containing same | Chemistry; Metallurgy | 14 | Expired |
| US6005141A | Use of glycine-N,N-diacetic acid derivatives as biodegradable complexing agents for alkaline earth metal ions and heavy metal ions and process for the preparation thereof | Chemistry; Metallurgy | 13 | Expired |
| US4814505A | Purification of n-vinylformamide | Chemistry; Metallurgy | 13 | Expired |
| US6057283A | Fatty acid derivatives and their use as surfactants in detergents and cleaners | Chemistry; Metallurgy | 12 | Expired |
| US5972237A | Use of heterocyclic compounds as activators for inorganic peroxy compounds | Textiles; Paper | 12 | Expired |
| US6320064A | Fatty acid derivatives and their use as surfactants in detergents and cleaners | Chemistry; Metallurgy | 11 | Expired |
| US7671234B2 | Method for producing methylglycine-N,N-diethanoic acid-trialkali metal salts with a low by-product content | Chemistry; Metallurgy | 11 | Expired |
| US5856538A | Preparation of N-acylamino carboxylic acids and N-acylamino sulfonic acids and their alkali metal salts | Chemistry; Metallurgy | 11 | Expired |
| US4670591A | Preparation of N-.alpha.-alkoxyethylformamides | Chemistry; Metallurgy | 10 | Expired |
| US6008176A | Use of glycine-N, N-diacetic acid derivatives as biodegradable complexing agents for alkaline earth metal ions and heavy metal ions | Chemistry; Metallurgy | 10 | Expired |
| US4827014A | 2-Hydroxy-3-aminopropionic-n,n-diacetic acid and derivatives thereof, preparation thereof, and detergents containing same | Chemistry; Metallurgy | 10 | Expired |
| US4997587A | Washing and cleaning agents containing .beta.-alanine-N,N-diacetic acid | Chemistry; Metallurgy | 10 | Expired |
| US5445724A | Phosphonium salts and use thereof as brighteners for aqueous acidic electronickelization baths | Chemistry; Metallurgy | 10 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.