Methods, computer program products, systems and data structures for generating a bar code are described. The bar code may include a first bar code and a second bar code. The first bar code includes a first number system character, a GS1 company prefix, a family code, a value code and a check digit, and...http://www.google.co.uk/patents/US7784702?utm_source=gb-gplus-sharePatent US7784702 - Family code determination using brand and sub-brand
