Peter Rudolf
85Patents
9h-index
121Co-inventors
81Inventor score
Filing activity: Mar 29, 1976 → Dec 28, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7550064B2 | Method for continuously operated pure distillation of oxiranes, especially propylene oxide | Emerging Cross-Sectional Technologies | 26 | Expired |
| US4296072A | Apparatus for the treatment of wet solids, especially pulpy materials, by heating or cooling | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4514937A | Method for the surface treatment of magnetic recording media | Performing Operations; Transporting | 19 | Expired |
| US4276701A | Apparatus for the drying of wet, pasty and/or fusible materials | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4084201A | Magnetic disc, especially a flexible magnetic disc, for track adjustment and amplitude control | Physics | 17 | Expired |
| US7119219B2 | Organometallic building materials and method for producing the same | Performing Operations; Transporting | 16 | Expired |
| US4296149A | Manufacture of acicular cobalt-containing magnetic iron oxide | Physics | 13 | Expired |
| US5200085A | Process and apparatus for extraction of solid matter containing fat and/or protein from sludge | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4259368A | Manufacture of acicular magnetic iron oxide | Physics | 10 | Expired |
| US4764300A | Preparation of finely divided and acicular hexagonal ferrites and their use for the production of magnetic recording media and plastoferrites | Chemistry; Metallurgy | 9 | Expired |
| US7833498B2 | Pipe assembly reactor comprising a helically shaped cross section | Performing Operations; Transporting | 9 | Active |
| US4729785A | Preparation of acicular ferromagnetic metal particles consisting essentially of iron | Physics | 9 | Expired |
| US4287233A | Manufacture of acicular cobalt-containing magnetic iron oxide | Physics | 9 | Expired |
| US4464352A | Manufacture of acicular ferrimagnetic iron oxide | Chemistry; Metallurgy | 8 | Expired |
| US7658893B2 | Method for the continuous production of propylene glycol | Chemistry; Metallurgy | 8 | Active |
| US4497723A | Preparation of acicular, ferrimagnetic iron oxides | Chemistry; Metallurgy | 8 | Expired |
| US4221776A | Manufacture of acicular ferrimagnetic iron oxides | Chemistry; Metallurgy | 7 | Expired |
| US4670177A | Preparation of ferromagnetic chromium dioxide | Chemistry; Metallurgy | 7 | Expired |
| US4420330A | Stabilization of pyrophoric ferromagnetic acicular metal particles consisting essentially of iron | Electricity | 6 | Expired |
| US4406795A | Extraction process | Chemistry; Metallurgy | 6 | Expired |
| US6881853B2 | Method for producing propylene oxide | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7084310B2 | Method for the continuous production of propylene glycol | Chemistry; Metallurgy | 5 | Expired |
| US4521527A | Molded iron catalyst and its preparation | Chemistry; Metallurgy | 5 | Expired |
| US10892626B2 | Power adapter for cordless power tools | Emerging Cross-Sectional Technologies | 5 | Active |
| US6756503B2 | Method for the production of propylene oxide | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.