Obtaining funding can be difficult for inventors. It may be a good idea to prepare a project document outlining the potential for sales of the product you want to develop. You need to convince investors that there is money to be made with your inventions (return on investment)
Otherwise, for government grants, sometimes it is enough to prove you are advancing science in some way. Assuredly, lots of documentation is required. Your more recent posts appear to be keywords and not much information about your projects. Additional information would be helpful.
In some cases sponsorship
can also be obtained.