Raimo Virta
19Patents
8h-index
26Co-inventors
68Inventor score
Filing activity: Feb 19, 1985 → Oct 12, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4905380A | Method and apparatus in a paper machine single-wire drying group | Textiles; Paper | 41 | Expired |
| US4953297A | Method of and device for pocket ventilation in the drying section of a paper machine, in particular for high-speed paper machines | Textiles; Paper | 27 | Expired |
| US4628618A | Apparatus in a drying section of a paper machine | Textiles; Paper | 26 | Expired |
| US4892622A | Method for resisting formation of undulations in a fiber/water mixture during forming of a paper web in a paper-making machine | Textiles; Paper | 13 | Expired |
| US5535527A | Method and arrangement in a multi-cylinder dryer of a paper machine | Textiles; Paper | 13 | Expired |
| US5509215A | Method and device for stabilization of a paper web in a group of cylinders in a drying section of a paper machine | Textiles; Paper | 11 | Expired |
| US5019213A | Method and apparatus in the drying section of a paper making machine for speeding the threading of a paper or paperboard web | Textiles; Paper | 11 | Expired |
| US6247247A | Blow box for the drying section of a papermaking machine, method for sealing a pocket with a blow box in the drying section of a papermaking machine, and arrangement in a papermaking machine | Textiles; Paper | 9 | Expired |
| US6317999A | Sealing nozzle arranged in a blow box used in the drying section of a paper machine | Textiles; Paper | 8 | Expired |
| US4756183A | Method and apparatus for measuring air permeability of a wall-like or sheet-like element | Physics | 8 | Expired |
| US5524360A | Method and device for ventilating pocket spaces in a multi-cylinder dryer of a paper machine | Textiles; Paper | 7 | Expired |
| US5728930A | Method and device for measuring the permeability of a drying wire to air | Physics | 6 | Expired |
| US5996244A | Roll for a paper machine, in particular for a paper drying device, and dryer group for a paper machine | Textiles; Paper | 5 | Expired |
| US5152076A | Method and device in a paper machine | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5720852A | Method and device for stabilizing the running of a paper web in connection with a paper guide roll | Textiles; Paper | 4 | Expired |
| US6105277A | Process and system for promoting complete web support within the dryer section of a papermachine | Textiles; Paper | 3 | Expired |
| US6418639B1 | Method and device in the dryer section of a paper/board machine | Textiles; Paper | 3 | Expired |
| US6358366B1 | System and method for threading a moist web in a pulp dryer or the like from one section to the following section | Textiles; Paper | 2 | Expired |
| US5635034A | Suction roll or cylinder and method for removing air from a suction roll or cylinder | Textiles; Paper | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.