The original spec was promulgated by Intel employee Becky Emmett last July.

FORBES: Ultrabooks Step Into The Limelight

In an official Intel technology blog written by Becky Emmett, the company defines Ultrabook specs and characteristics, which are quite precise in some cases and generously vague in others (to encourage innovation on the part of hardware OEMs like Dell and Hewlett-Packard that will bring this class of machine to market).

FORBES: Ultrabook: Is It A New Category?