Johan Gullichsen
23Patents
11h-index
25Co-inventors
75Inventor score
Filing activity: Aug 27, 1975 → Feb 20, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4435193A | Controlling operation of a centrifugal pump | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US5813758A | Concentric ring fluidizing mixer | Performing Operations; Transporting | 39 | Expired |
| US4410337A | Method and an apparatus for separating a gas from a fibre suspension | Mechanical Engineering; Lighting; Heating | 37 | Expired |
| US6436232B1 | Procedure for adding a filler into a pulp based on cellulose fibers | Textiles; Paper | 36 | Expired |
| US4776758A | Combined fluidizing and vacuum pump | Mechanical Engineering; Lighting; Heating | 27 | Expired |
| US4826398A | Medium consistency pump with self-feeding | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US4362536A | Pulp degassing | Performing Operations; Transporting | 12 | Expired |
| US4986480A | Method and apparatus for feeding a conical refiner | Textiles; Paper | 12 | Expired |
| US4754935A | Method and apparatus for refining fibrous material | Textiles; Paper | 12 | Expired |
| US5380402A | Reducing pulp mill liquid discharge | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4042452A | Process for washing cellulose pulp from alkali digestion wherein acid is added to the washing solution | Textiles; Paper | 11 | Expired |
| US4594152A | Method and an apparatus for treating fibre suspensions | Performing Operations; Transporting | 10 | Expired |
| US5374333A | Method for minimizing pulp mill effluents | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4854819A | Method and apparatus for pumping fibre suspensions | Mechanical Engineering; Lighting; Heating | 8 | Expired |
| US5549788A | Minimal effluents discharge pulp mill with chemical recovery | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4780053A | Method and apparatus for pumping fiber suspensions | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5518583A | Zero discharge mill distillation, salt recovery, and water management | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4812207A | Method of removing lignin from bleach plant effluents | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4842688A | Method of removing macromolecular organic dissolved and colloidal material from wood processing industry effluents | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5547543A | Apparatus for minimizing effluent discharges and recovering chemicals in a pulp mill | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4222818A | Method for treatment of lignocellulosic material with chlorine | Textiles; Paper | 3 | Expired |
| US5047118A | Method for decreasing energy consumption during refining of fiber material at a reduced grinding frequency while maintaining capacity | Textiles; Paper | 2 | Expired |
| US3976538A | Method for bleaching of cellulosic pulp | Mechanical Engineering; Lighting; Heating | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.