Axel Walch
33Patents
16h-index
44Co-inventors
81Inventor score
Filing activity: Oct 23, 1975 → Sep 10, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5205287A | Ultrasonic contrast agents, processes for their preparation and the use thereof as diagnostic and therapeutic agents | Human Necessities | 343 | Expired |
| US5137928A | Ultrasonic contrast agents, processes for their preparation and the use thereof as diagnostic and therapeutic agents | Human Necessities | 205 | Expired |
| US5470843A | Carbohydrate-containing polymers, their preparation and use | Chemistry; Metallurgy | 130 | Expired |
| US5190982A | Ultrasonic contrast agents, processes for their preparation and the use thereof as diagnostic and therapeutic agents | Physics | 117 | Expired |
| US5430110A | Polyvinylamine derivatives having hydrophilic centers, processes for their preparation and the use of the compounds as a medicament, active compound carrier and foodstuff auxiliary | Human Necessities | 75 | Expired |
| US4720343A | Macroporous asymmetrical hydrophilic membrane made of a synthetic polymer | Performing Operations; Transporting | 57 | Expired |
| US5041291A | Biodegradable poly(hydroxyalkyl)amino dicarboxylic acid) derivatives, a process for their preparation, and the use thereof for depot formulations with controlled deivery of active ingredient | Human Necessities | 52 | Expired |
| US4499211A | Open-cell/microporous molded article | Chemistry; Metallurgy | 50 | Expired |
| US5428112A | Crosslinked, nitrogen-containing vinyl copolymers, processes for their preparation and the use of these compounds | Chemistry; Metallurgy | 45 | Expired |
| US5009824A | Process for preparing an asymmetrical macroporous membrane polymer | Performing Operations; Transporting | 27 | Expired |
| US4206050A | Membrane unit and apparatus for removing metabolite contaminants from blood | Performing Operations; Transporting | 25 | Expired |
| US5700459A | Pharmacological composition containing polyelectrolyte complexes in microparticulate form and at least one active agent | Human Necessities | 25 | Expired |
| US4229291A | Permselective membrane and use | Performing Operations; Transporting | 24 | Expired |
| US4557955A | Shaped articles which are composed of a copolymer containing fluorine groups and which are selectively permeable to liquids and gases and are simultaneously oleophobic and oleophilic | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4183811A | Membrane unit and device for cleansing blood | Performing Operations; Transporting | 23 | Expired |
| US4075093A | Process of separating citric acid and/or isocitric acid or their salts from aqueous solutions | Performing Operations; Transporting | 19 | Expired |
| US4835248A | Biologically degradable polyamide for depot preparations having controlled release of the active compound | Chemistry; Metallurgy | 14 | Expired |
| US4906473A | Biodegradable poly(hydroxyalkyl)amino dicarboxylic acid) derivatives, a process for their preparation, and the use thereof for depot formulations with controlled delivery of active ingredient | Human Necessities | 9 | Expired |
| US5674531A | Nanoparticles containing an active substance and a ketalized polytartramidic acid, process for their preparation, and use thereof | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5100673A | Microencapsulation of biologically active material | Performing Operations; Transporting | 9 | Expired |
| US4354938A | Hemodialysis membrane and process and apparatus for using same in hemodialysis | Performing Operations; Transporting | 8 | Expired |
| US5106740A | Immobilization of an isethiacyanate of a cofactor on a polymer | Chemistry; Metallurgy | 6 | Expired |
| US5229469A | Biologically degradable polyamino dicarboxylic acid--CO--anhydro amino dicarboxylic acid derivative | Chemistry; Metallurgy | 6 | Expired |
| US6037467A | Methods for preparing carbohydrate-containing hydrophilic polymers | Chemistry; Metallurgy | 5 | Expired |
| US4524155A | Open-cell/microporous molded article | Chemistry; Metallurgy | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.