Riekert Kok

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Amsterdam, NL

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Patents Grantslast 30 patents

Information Patent Grant
Detergent composition containing an internal olefin sulfonate compo...
- Patent number 5,078,916
- Issue date Jan 7, 1992
- Shell Oil Company
- Riekert Kok
- C11 - ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES FATTY ACIDS...
Information Patent Grant
Process for the preparation of 1,2-dioximes
- Patent number 4,240,981
- Issue date Dec 23, 1980
- Shell Oil Company
- Riekert Kok
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Liquid/liquid extraction of nickel values
- Patent number 4,234,546
- Issue date Nov 18, 1980
- Shell Oil Company
- Abraham J. Van der Zeeuw
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Extraction of copper values from aqueous solution
- Patent number 4,173,616
- Issue date Nov 6, 1979
- Shell Oil Company
- Peter Koenders
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Extraction of Cu(II), Fe(III), Ni(II), Co(II), Cd(II), Zn(II), Ca(I...
- Patent number 4,108,958
- Issue date Aug 22, 1978
- Shell Oil Company
- Riekert Kok
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...