Eka AB
Surte, SE· latest recorded location
EKA AB is named on 10 US grants and 0 published applications in this corpus. Its most frequent classification is C01B (Non-metallic elements).
- Granted patents
- 10
- Published applications
- 0
- Inventors
- 17
- Granted in 2026 so far
- 0
- Most recent grant
- 13 Feb 1990
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
By publication year.
Technology areas
Share of 10 documents
- C01BNon-metallic elements3
- D21BFibrous raw materials or their mechanical treatment3
- B01DSeparation1
- B01JChemical or physical processes1
- C01PIndexing scheme relating to structural and physical aspects of solid inorganic compounds1
- C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients1
- C08LCompositions of macromolecular compounds1
- C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting1
- C09DCoating compositions1
- C11DDetergent compositions1
Recent patents
- Method of manufacturing bleached chemi-mechanical and semichemical fibre pulp by a two-stage impregnation process13 Feb 1990US 4,900,399 A
- Method of manufacturing bleached chemimechanical and semichemical fibre pulp by means of a one-stage impregnation process12 Jul 1988US 4,756,799 A
- Soil-repellent coating composition15 Jul 1986US 4,600,735 A
- Method in the production of hydrogen peroxide12 Nov 1985US 4,552,748 A
- Process of reducing the oxygen content in gas mixtures17 Sep 1985US 4,541,997 A
No published applications.
Most cited
By later US patents
- Method of manufacturing bleached chemimechanical and semichemical fibre pulp by means of a one-stage impregnation process34US 4,756,799 A1988
- Method in the production of hydrogen peroxide22US 4,552,748 A1985
- Method for use in the defibration or refining of lignocellulose-containing fibrous materials19US 4,311,553 A1982
- Soil-repellent coating composition12US 4,600,735 A1986
- Surface-modified pigment of natural kaolin material and a process of producing same10US 4,294,885 A1981