Ahlstrom Corporation
39Patents
24Active
39Granted
49Portfolio score
Filing activity: Apr 30, 1985 → Sep 25, 2015 · 11 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4981413A | Pump for and method of separating gas from a fluid to be pumped | Mechanical Engineering; Lighting; Heating | 48 | Expired |
| US5965091A | Filled paper for gas filtration | Emerging Cross-Sectional Technologies | 28 | Expired |
| US7914723B2 | Nonwoven bonding patterns producing fabrics with improved abrasion resistance and softness | Emerging Cross-Sectional Technologies | 23 | Active |
| US6224768A | Filter paper for laden liquids | Performing Operations; Transporting | 17 | Expired |
| US4634521A | Screening apparatus with light reject removal | Performing Operations; Transporting | 13 | Expired |
| US7914637B2 | Method for manufacturing a particularly soft and three-dimensional nonwoven and nonwoven thus obtained | Emerging Cross-Sectional Technologies | 12 | Active |
| US8177984B2 | Methods especially useful for separating water-hydrocarbon emulsions having low interfacial tensions | Emerging Cross-Sectional Technologies | 12 | Active |
| US5116198A | Centrifugal pumping apparatus | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US7968025B2 | Method for manufacturing a particularly soft and three-dimensional nonwoven and nonwoven thus obtained | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6706145B2 | Aqueous adhesive dispersions and the use thereof in the production of multi-layered paper | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4995991A | Method and apparatus for improving the operation of a disc filter | Textiles; Paper | 9 | Expired |
| US8359720B2 | Hydraulic patterning of a fibrous, sided nonwoven web | Emerging Cross-Sectional Technologies | 8 | Active |
| US7578938B2 | Filtering medium and use of the said filtering medium for pollution removal from lagoons | Emerging Cross-Sectional Technologies | 8 | Expired |
| US8833567B2 | Coalescence media for separation of water-hydrocarbon emulsions | Performing Operations; Transporting | 7 | Active |
| US5094715A | Arrangement for removing thread-like impurities from a defiberizing drum | Emerging Cross-Sectional Technologies | 6 | Expired |
| US9662600B2 | High efficiency and high capacity glass-free fuel filtration media and fuel filters and methods employing the same | Performing Operations; Transporting | 6 | Active |
| US9492775B2 | Air filtration media, media constructions and methods | Performing Operations; Transporting | 5 | Active |
| US9505193B2 | Stitched unidirectional or multi-axial reinforcement and a method of producing the same | Performing Operations; Transporting | 5 | Active |
| US7484276B2 | Process for manufacturing a composite nonwoven and installation for carrying out the process | Textiles; Paper | 4 | Expired |
| US8307765B2 | Process and equipment for printing on non-woven-fabric | Performing Operations; Transporting | 4 | Active |
| US8597555B2 | Method for manufacturing soft, resistant and bulky nonwoven and nonwoven thus obtained | Emerging Cross-Sectional Technologies | 3 | Active |
| US8137790B2 | Nonwoven medical fabric | Emerging Cross-Sectional Technologies | 3 | Active |
| US8512607B2 | Process for producing nonwoven fabrics particularly soft, resistant and with a valuable appearance | Emerging Cross-Sectional Technologies | 3 | Active |
| US9290877B2 | Method of making glazed nonwoven fabric | Emerging Cross-Sectional Technologies | 2 | Active |
| US8366880B2 | Fibrous support intended to be impregnated with liquid | Textiles; Paper | 2 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.