Council of Scientific and Industrial Research (1988) Improved process for the sealing of anodised aluminium and its alloy substrates. 150403.

Council of Scientific and Industrial Research (1982) An improved process for chemical colouring of aluminium and its alloys substrates. 150164.

Council of Scientific and Industrial Research (1981) An improved device for electrolytic etching of aluminium foil using direct current. 148324.

Council of Scientific and Industrial Research (1980) Improved process for the production of dielectric oxide film coated etched aluminium foil for use as anode in high voltage electrolytic capacitor. 148226.

Council of Scientific and Industrial Research (1980) An improved for the removal of chloride ions from an etched aluminium foil for use in aluminium electrolytic capacitor. 148080.

Council of Scientific and Industrial Research (1977) Improvements in or relating to etching of aluminium or its alloy for use as electrode in aluminium electrolytic capacitor. 141250.