The word bushcraft was trademarked by Bushcraft USA LLC. The application was submitted July 30, 2012 and issued November 12, 2013. This trademark is a service mark, for the general use of the word bushcraft and is not limited to electronic forms of communication or commerce. However, the validity of this TM is in question (nullified) since the Mark was used in commerce, by Mors Kochanski in 1981, 31 years prior and again in 1988, 24 years prior to Bushcraft USA making claim to the Mark.
The bare minimum, as far as gear goes, includes just enough to survive. What the means is up to you. If you read the popular book Hatchet, where a young boy experienced a plane crash and only had a hatchet to survive, you know a lot can get done. However, you can pack a lot into a small backpack to use for bushcraft and wilderness survival. Common tools include: Solo Survival: How to Survive Alone in the Wilderness for 1 week --Eastern Woodlands