Rolf Ekholm
38Patents
8h-index
16Co-inventors
72Inventor score
Filing activity: Jun 20, 1975 → Nov 18, 2002
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5366288A | Apparatus for mixing a suspension of cellulosic fibrous material and fluid | Performing Operations; Transporting | 60 | Expired |
| US5744004A | System for feeding a suspension to a pressurized vessel | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US5556200A | Apparatus for mixing a first fluid into a second fluid using a wedge-shaped, turbulence-inducing flow restriction in the mixing zone | Emerging Cross-Sectional Technologies | 24 | Expired |
| US5234550A | Wall means having slots between adjacent bars for withdrawing liquid from particle material | Performing Operations; Transporting | 20 | Expired |
| US3999684A | Device for feeding pieces of lumber one by one | Performing Operations; Transporting | 12 | Expired |
| US6059323A | Expansion unit for piping adjustment | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4737274A | Tramp material separator | Textiles; Paper | 9 | Expired |
| US4961844A | Apparatus for separating a suspension of fibrous cellulose pulp | Textiles; Paper | 8 | Expired |
| US4913806A | Apparatus for screening a suspension of fibrous cellulose pulp | Textiles; Paper | 7 | Expired |
| US6341888B1 | Apparatus for introduction of a first fluid into a second fluid | Textiles; Paper | 7 | Expired |
| US4029196A | Device for rotating pieces of lumber | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6347883B1 | Apparatus for adding a first fluid into a second fluid with means to prevent clogging | Performing Operations; Transporting | 6 | Expired |
| US5685342A | Apparatus for mixing a first fluid into a second fluid | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5711852A | Method and device for mixing of a fluid into a pulp-suspension | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6254335A | Device for admixing a first fluid into a second fluid | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US6659635B2 | Method for introducing a first fluid into a second fluid, preferably introduction of steam into flowing cellulose pulp | Performing Operations; Transporting | 3 | Expired |
| US4009630A | Device with movable end stop means for pieces of lumber to be cut into shorter pieces | Emerging Cross-Sectional Technologies | 3 | Expired |
| USD354063S | Chute connection to a pulp pump | General | 3 | Expired |
| US6371526B1 | Quick cone | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US4044893A | Device for lifting pieces of lumber | Performing Operations; Transporting | 2 | Expired |
| US4105107A | Feeding device for guiding pieces of lumber to the one or the other of two longitudinal conveyors | Performing Operations; Transporting | 2 | Expired |
| US3976538A | Method for bleaching of cellulosic pulp | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US4078651A | Log turner for aligning logs | Performing Operations; Transporting | 2 | Expired |
| US5480546A | Rotating screen drum with a stainless lining | Textiles; Paper | 2 | Expired |
| US4009631A | Device for holding pieces of lumber when they are cut | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.