Inherent Feats

Inherent Feats (unofficial name) are Feats that are obtained by using Tomes, and build your total Inherent bonus to one of your character stats. Inherent Feats can be acquired multiple times, but new stacks are not granted by using the same Tome multiple times (only the most powerful version of the respective Tome will be applied). Inherent Feats persist through reincarnation, and can be found under the  category in your character sheet. Hovering over these feats will show you times acquired which is equal to the max. bonus amount. Note that for some of these feats the active amount depends on the character level.

Although unofficial, the name Inherent Feats was used in a bugfix report in Update 47 Preview 3 notes:

Ability scores

 * ''The total Inherent bonus applied to an Ability score is limited by character level.