Eka Nobel AB
102Patents
0Active
102Granted
42Portfolio score
Filing activity: Feb 4, 1987 → Sep 28, 1999
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5368833A | Silica sols having high surface area | Textiles; Paper | 108 | Expired |
| US5127994A | Process for the production of paper | Textiles; Paper | 87 | Expired |
| US5374335A | Sized paper, process for producing same and use thereof | Textiles; Paper | 77 | Expired |
| US5277764A | Process for the production of cellulose fibre containing products in sheet or web form | Textiles; Paper | 68 | Expired |
| US5447604A | Silica sols, a process for the production of silica sols and use of the sols | Chemistry; Metallurgy | 62 | Expired |
| US5603805A | Silica sols and use of the sols | Textiles; Paper | 57 | Expired |
| US4980025A | Papermaking process | Textiles; Paper | 53 | Expired |
| US6398908B1 | Process for acid bleaching of lignocellulose-containing pulp with a magnesium compound | Textiles; Paper | 49 | Expired |
| US4961825A | Papermaking process | Textiles; Paper | 46 | Expired |
| US5091166A | Process for the production of chlorine dioxide | Textiles; Paper | 39 | Expired |
| US5227031A | Process for the production of chlorine dioxide | Chemistry; Metallurgy | 39 | Expired |
| US5256386A | Method for preparation of silica particles | Chemistry; Metallurgy | 36 | Expired |
| US5091167A | Process for the production of chlorine dioxide | Textiles; Paper | 35 | Expired |
| US4950627A | Ceramic coating on metal | Emerging Cross-Sectional Technologies | 33 | Expired |
| US5925588A | Production of hydrogen peroxide | Performing Operations; Transporting | 32 | Expired |
| US5423959A | Process and apparatus for the production of sulphuric acid and alkali metal hydroxide | Chemistry; Metallurgy | 32 | Expired |
| US6007678A | Process for delignification of lignocellulose-containing pulp with an organic peracid or salts thereof | Textiles; Paper | 30 | Expired |
| US5846898A | Production of hydrogen peroxide | Performing Operations; Transporting | 29 | Expired |
| US5607552A | Aqueous suspensions of colloidal particles, preparation and use of the suspensions | Textiles; Paper | 28 | Expired |
| US4964954A | Process for the production of paper | Textiles; Paper | 27 | Expired |
| US5344633A | Alkali metal silicate composition with potassium compound additive | Chemistry; Metallurgy | 26 | Expired |
| US5643414A | Silica sols in papermaking | Textiles; Paper | 25 | Expired |
| US5785812A | Process for treating oxygen delignified pulp using an organic peracid or salt, complexing agent and peroxide bleach sequence | Textiles; Paper | 25 | Expired |
| US4946557A | Process for the production of paper | Textiles; Paper | 24 | Expired |
| US5496440A | Process for the manufacture of paper | Textiles; Paper | 24 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.