The present invention, generally speaking, provides a method for modifying an original executable by injecting it with an injection executable, using a code injection utility. The original executable and the injection executable are of the same or compatible file formats, and the structure of both executables...http://www.google.com.au/patents/US6334213?utm_source=gb-gplus-sharePatent US6334213 - Merging of separate executable computer programs to form a single executable computer program
