Rolf Ryham
40Patents
11h-index
24Co-inventors
75Inventor score
Filing activity: Aug 28, 1979 → Jan 19, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5753075A | Method and system for feeding comminuted fibrous material | Textiles; Paper | 37 | Expired |
| US5246541A | Evaporator for liquid solutions | Performing Operations; Transporting | 36 | Expired |
| US5489363A | Pulping with low dissolved solids for improved pulp strength | Textiles; Paper | 21 | Expired |
| US5547012A | Dissolved solids control in pulp production | Textiles; Paper | 18 | Expired |
| US6306252A | Heat recovery from spent digester cooking liquor | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5620562A | Dissolved solids control in pulp production | Textiles; Paper | 16 | Expired |
| US6176971A | Heat economy enhancements for the recovery and use of energy obtained from spent cooking liquors | Textiles; Paper | 15 | Expired |
| US4963231A | Method for evaporation of liquids | Emerging Cross-Sectional Technologies | 15 | Expired |
| US6106668A | Method for feeding comminuted fibrous material | Textiles; Paper | 13 | Expired |
| US4755258A | Method and apparatus for deactivating spent liquor | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4302281A | Method for producing pulp | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5380402A | Reducing pulp mill liquid discharge | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5374333A | Method for minimizing pulp mill effluents | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4930429A | Apparatus and process for generating steam from wet fuel | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5683550A | Method and apparatus for increasing recovery boiler capacity by withdrawing combustible gas from the furnace | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6217711A | Method of treating condensates | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4860548A | Air conditioning process and apparatus therefor | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US5849150A | Low dissolved solids control in pulp production | Textiles; Paper | 9 | Expired |
| US5326433A | Multi-level sulfide content white liquor production and utilization in cellulose pulping | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6346167B2 | Dissolved solids control in pulp production | Textiles; Paper | 9 | Expired |
| US6086712A | DOM control in cellulose pulp production | Textiles; Paper | 8 | Expired |
| US5048200A | Process and apparatus for dehumidifying wet air | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5302246A | Method of managing liquid steams in a pulp mill | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5549788A | Minimal effluents discharge pulp mill with chemical recovery | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6280568A | Dissolved organic material control in a cellulose pulp continuous digester | Textiles; Paper | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.