Helmut Brehm
19Patents
11h-index
18Co-inventors
65Inventor score
Filing activity: Jan 25, 1985 → Oct 24, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5837789A | Fluid-absorbing polymers, processes used in their production and their application | Electricity | 198 | Expired |
| US5672633A | Powdery polymers capable of absorbing aqueous liquids, a process for their production and their use as absorbents | Chemistry; Metallurgy | 91 | Expired |
| US5610220A | Powder-form polymers which absorb, even under pressure, aqueous liquids and blood, a method of producing them and their use in textile articles for body-hygiene applications | Emerging Cross-Sectional Technologies | 79 | Expired |
| US6623848B2 | Water-absorbing polymers having interstitial compounds, a process for their production, and their use | Emerging Cross-Sectional Technologies | 39 | Expired |
| US5556930A | Copolymers and their use in the treatment of leather | Chemistry; Metallurgy | 33 | Expired |
| US6911499B1 | Polymer composition and a method for producing the same | Chemistry; Metallurgy | 32 | Expired |
| US5455284A | Process for the production of water-swellable products using superfines of water-swellable polymers | Emerging Cross-Sectional Technologies | 29 | Expired |
| US7833624B2 | Absorbent polymer structure with improved retention capacity and permeability | Emerging Cross-Sectional Technologies | 28 | Active |
| US5408019A | Cross-linked, water-absorbing polymer and its use in the production of hygiene items | Human Necessities | 25 | Expired |
| US5248709A | Process for the agglomeration of water-swellable polymers by means of sinter granulation | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5229466A | Powdery absorbing material for aqueous liquids based on water-swellable carboxylate polymers | Chemistry; Metallurgy | 18 | Expired |
| US6410610B1 | Method for producing cationic polyelectrolytes | Chemistry; Metallurgy | 5 | Expired |
| US5548049A | Copolymers of allyliminodiacetic acid with unsaturated carboxylic acids and their use as complexing agents, peroxide stabilizers, builders in washing and cleaning products and dispersing agents | Chemistry; Metallurgy | 5 | Expired |
| US4897225A | Process for the preparation of room temperature flowable derivatives of natural fats and oils and their use | Chemistry; Metallurgy | 3 | Expired |
| US7101946B2 | Water-absorbing polymers having interstitial compounds, a process for their production, and their use | Chemistry; Metallurgy | 2 | Expired |
| US4644083A | Process for the production of N-substituted .alpha.,.beta.-unsaturated carboxylic acid amides | Chemistry; Metallurgy | 2 | Expired |
| US4975090A | Process for the preparation of room temperature flowable derivatives of natural fats and oils and their use | Chemistry; Metallurgy | 2 | Expired |
| US7335709B1 | Polymerizate composition and a method for producing the same | Chemistry; Metallurgy | 1 | Expired |
| US5873908A | Alkoxy group containing copolymers and their use in retanning leather | Chemistry; Metallurgy | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.