Eka AB
10Patents
0Active
10Granted
31Portfolio score
Filing activity: Jan 14, 1980 → May 16, 1988
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4756799A | Method of manufacturing bleached chemimechanical and semichemical fibre pulp by means of a one-stage impregnation process | Textiles; Paper | 34 | Expired |
| US4552748A | Method in the production of hydrogen peroxide | Performing Operations; Transporting | 22 | Expired |
| US4311553A | Method for use in the defibration or refining of lignocellulose-containing fibrous materials | Textiles; Paper | 19 | Expired |
| US4600735A | Soil-repellent coating composition | Chemistry; Metallurgy | 12 | Expired |
| US4294885A | Surface-modified pigment of natural kaolin material and a process of producing same | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4409117A | Detergent compositions stable to chlorine separation, and agents for producing same | Chemistry; Metallurgy | 9 | Expired |
| US4357454A | Binder | Chemistry; Metallurgy | 9 | Expired |
| US4900399A | Method of manufacturing bleached chemi-mechanical and semichemical fibre pulp by a two-stage impregnation process | Textiles; Paper | 7 | Expired |
| US4503028A | Method in the production of hydrogen peroxide | Chemistry; Metallurgy | 5 | Expired |
| US4541997A | Process of reducing the oxygen content in gas mixtures | Chemistry; Metallurgy | 4 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.