Siegfried Lang
20Patents
10h-index
36Co-inventors
75Inventor score
Filing activity: Dec 28, 1978 → Jun 28, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4801460A | Preparation of solid pharmaceutical forms | Performing Operations; Transporting | 145 | Expired |
| US5945032A | Polymer/hydrogen peroxide complexes | Chemistry; Metallurgy | 120 | Expired |
| US5006345A | Direct tableting auxiliary | Human Necessities | 52 | Expired |
| US6231848A | Topical Products as prophylactic of curative agents for bacterial skin infections | Human Necessities | 39 | Expired |
| US5880252A | Pyrrolidonyl-containing polyesters and polyamides | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5840769A | Direct tabletting aids | Human Necessities | 24 | Expired |
| US6497886B1 | 1,3-bis-(N-lactamyl) propane and the pharmaceutical and cosmetic use thereof | Chemistry; Metallurgy | 19 | Expired |
| US4786699A | Preparation of polyvinylpyrrolidone | Chemistry; Metallurgy | 14 | Expired |
| US4366151A | Oxyalkylated fatty acids and their use as solubilizers | Chemistry; Metallurgy | 13 | Expired |
| US4254239A | Biodegradable vinylpyrrolidone polymers, their manufacture and use | Chemistry; Metallurgy | 11 | Expired |
| US6083408A | Depth-type filter for killing microorganisms and inactivating viruses which comprises a fibrous material and crospovidone-iodine and its use | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4551512A | Water-soluble polymers having a low hygroscopicity | Chemistry; Metallurgy | 9 | Expired |
| US6627088B1 | Depth-type filter for killing microorganisms and inactivating viruses and its use | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4350791A | Vinylpyrrolidone polymers, their preparation, their use in the preparation of plasma substitutes, and the substitutes thus obtained | Chemistry; Metallurgy | 7 | Expired |
| US5190791A | Infrared radiation process for a high contrast in the natural grain of a naturally pale wood | Performing Operations; Transporting | 6 | Expired |
| US6203484A | Methods for disinfecting wastes | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6592768B1 | Compositions for disinfecting wastes | Human Necessities | 4 | Expired |
| US6171583A | Powdery iodine complexes | Chemistry; Metallurgy | 2 | Expired |
| US6096911A | Process for purifying alkoxylated fats | Chemistry; Metallurgy | 2 | Expired |
| US6126843A | Process for the antimicrobial treatment of cooling lubricants | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.