If you have a autocad hatch pattern it can be used in your inventor drawing also.
I use my expanded metal hatch pattern in my inventor drawings.
Create a sketch in the drawing view you want to use the hatch pattern in.
Use project geometry to create the hatch boundry and insert the hatch pattern of your choice.
when prompted to sellect a hatch pattern select OTHER.
In the select hatch pattern pane select LOAD and navigate to the ACAD.PAT file stored on your computer.
Select the required hatch pattern and load it
see the attached image