Birgit Bertsch-Frank
15Patents
7h-index
31Co-inventors
62Inventor score
Filing activity: May 17, 1989 → Sep 25, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5658873A | Coated sodium percarbonate particles, a process for their production and detergent, cleaning and bleaching compositions containing them | Chemistry; Metallurgy | 243 | Expired |
| US6387346B1 | Process for producing hydrogen peroxide by direct synthesis | Chemistry; Metallurgy | 32 | Expired |
| US6117409A | Process for producing hydrogen peroxide by direct synthesis | Chemistry; Metallurgy | 19 | Expired |
| US5902682A | Coated sodium percarbonate particles, a process for their preparation and their use | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5560896A | Method for producing granulated sodium percarbonate | Chemistry; Metallurgy | 16 | Expired |
| US6239095A | Process for preparation of coated peroxygen compounds | Chemistry; Metallurgy | 10 | Expired |
| US6290775A | Fluidized bed reactor and a process of using the same | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4968500A | Continuous method for preparation of granulated sodium perborate | Chemistry; Metallurgy | 7 | Expired |
| US5714201A | Process for reducing dissolution time in the production and/or coating of sodium percarbonate | Chemistry; Metallurgy | 6 | Expired |
| US5094827A | High active oxygen content granulated sodium perborate product and method of making the same | Chemistry; Metallurgy | 6 | Expired |
| US7332139B2 | Process and device for carrying out reactions in reactor with slot-shaped reaction spaces | Performing Operations; Transporting | 5 | Expired |
| US5250280A | Method of preparing storage-stable aqueous sodium peroxymonsulfate solutions | Chemistry; Metallurgy | 5 | Expired |
| US5632965A | Method for the preparation of stabilized sodium percarbonate | Chemistry; Metallurgy | 3 | Expired |
| US5395602A | Method for the production of sodium perborate hydrate granulates | Chemistry; Metallurgy | 1 | Expired |
| US7041267B2 | Granular sodium carbonate obtained by fluid-bed spray granulation and a process for its production | Chemistry; Metallurgy | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.