A particulate coformulation, each particle comprising a core of an active substance surrounded by an excipient coating, the particles having a volume mean diameter of 10 μm or less, which on oral administration releases the active substance at a rate such that the time (Tmax) taken to attain the maximum...http://www.google.de/patents/US7354601?utm_source=gb-gplus-sharePatent US7354601 - Particulate materials
