Valmet Oy
217Patents
0Active
217Granted
42Portfolio score
Filing activity: Jan 8, 1973 → Feb 13, 1990
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4548164A | Engine driven generator assembly | Mechanical Engineering; Lighting; Heating | 122 | Expired |
| US4976821A | Press section with separate press zones in a paper machine | Textiles; Paper | 63 | Expired |
| US4441263A | Device in the drying section of a paper machine | Textiles; Paper | 63 | Expired |
| US4202113A | Paper machine drying section and method for operating same | Textiles; Paper | 58 | Expired |
| US3990348A | Firearm having a relief valve | Mechanical Engineering; Lighting; Heating | 46 | Expired |
| US4625430A | Drying section and method in paper machine | Textiles; Paper | 46 | Expired |
| US3968727A | Firearm with gas-operable structure and relief valve | Mechanical Engineering; Lighting; Heating | 41 | Expired |
| US4144124A | Machine for manufacturing paper such as tissue paper | Textiles; Paper | 41 | Expired |
| US4526655A | Press section with separate press nips in a paper machine | Textiles; Paper | 41 | Expired |
| US4568423A | Apparatus with a long press zone in the press treatment of a web | Performing Operations; Transporting | 39 | Expired |
| US4576682A | Long-nip press for a paper making machine | Textiles; Paper | 38 | Expired |
| US4516330A | Method and apparatus for the drying section of a paper machine | Textiles; Paper | 37 | Expired |
| US4229250A | Method of improving properties of mechanical paper pulp without chemical reaction therewith | Textiles; Paper | 35 | Expired |
| US3994774A | Twin-wire paper machine adjustable to single-wire machine | Textiles; Paper | 34 | Expired |
| US4551203A | Method and arrangement for guiding a paper web from the press section to the drying section | Textiles; Paper | 34 | Expired |
| US4757782A | Apparatus for coating a web | Textiles; Paper | 34 | Expired |
| US4675487A | Apparatus and method for electromagnetic heating of a roll | Electricity | 32 | Expired |
| US4539762A | Pocket ventilating apparatus for a multi-cylinder dryer of a paper machine | Textiles; Paper | 31 | Expired |
| US4163688A | Apparatus for dewatering in a paper machine | Textiles; Paper | 31 | Expired |
| US4559106A | Press roll and press in a paper making machine | Textiles; Paper | 31 | Expired |
| US4183148A | Paper machine drying section and method of operating the same | Textiles; Paper | 31 | Expired |
| US4391672A | Method used in paper making for treatment of a weave | Textiles; Paper | 30 | Expired |
| US4506756A | Tractor with improved frame construction | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4653395A | Method and apparatus in the calendering of a web | Textiles; Paper | 30 | Expired |
| US4566944A | Apparatus for cutting a lead-in strip from a paper web in a paper machine | Performing Operations; Transporting | 29 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.