A method of controlled heating of a micro channel reactor structure (46, 48, 50) comprises providing a structure (b1, b2, B1, B2) defining a desired temperature profile. A preferred embodiment of a heating element structure comprises a pattern of areas of a material capable of providing heat when energized,...http://www.google.com.au/patents/US6985672?utm_source=gb-gplus-sharePatent US6985672 - Device and method for the controlled heating in micro channel systems