The International Classifying Equipment for Industrial Designs ("the Locarno Classification") published by the World Intellectual Property Organization is the system adopted for classifying design articles.

The class and sub-class of the registered design records show the classification at the time of registration of the registered designs. They are not re-classified in accordance with the latest edition of the Locarno classification published by WIPO. The Locarno Classification is "solely of an administrative character"; it facilitates design searches and obviates substantial reclassification work when documents are exchanged at the international level.

According to the Locarno Classification, Class 32 sub-class 00 is the class to which the items "graphic symbols and logos, surface patterns, ornamentation" belong. Under section 2 of the Registered Designs Ordinance (Cap. 522), "design" is defined as "features of shape, configuration, pattern or ornament applied to an article by any industrial process" and "article" means "any article of manufacture and includes any part of an article if that part is made and sold separately".

Accordingly, if you wish to apply for registration of a design in respect of "graphic symbols and logos, surface patterns, ornamentation" (or any of the above items), you need to specify the article(s) to which the relevant Class 32 sub-class 00 items are to be applied and state the class and sub-class of the article(s) in accordance with the Locarno Classification. For example, if you wish to seek registration of a design in respect of an "ornamentation" and the ornamentation is to be applied to handbags, the article and the classification may be stated as "ornamentation for handbags" and "3-01" respectively in Application Form D1 instead of "ornamentation" and "32-00" respectively. If you file an application for registration of design and wish to claim priority in your application based on a previous application for registration of the same design filed in a Paris Convention country or a World Trade Organization member, you are required to specify the article and the class in your application form as mentioned in the preceding paragraph even if such previous application is classified in Class 32 sub-class 00.

A process and apparatus for Hydrometallurgy Equipment leaching of unseparated, crushed mineral ores using a vessel having liquid stream forming nozzles in the lower portion thereof which operate to direct a stream of leaching liquid into solids in the lower portion of the vessel and to create a highly agitated interaction zone above which solids are settling under gravity and through which liquid from the lower portion rises upwardly in counter-current flow. The vessel is sufficiently high that an overflow of low solids content liquid is taken from the top. Outlets, as for example discharge piping or sumps, are provided in the bottom of the vessel for the controlled removal of solids therefrom. In multistage operation, the solids content of the overflow liquid is removed and the liquid content of the underflow is removed and combined to yield a mineral pregnant liquor which serves as the leaching liquid for a preceding stage where less depleted solids are being processed.

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