I have an idea for an invention that uses another company's invention. I called the owner and revealed the idea without disclosing how the invention would work. This technology is relatively new and I know how to use it.
The owner suggested making a patent and putting me as an inventor. How can I ensure I receive royalties without a lawyer? I want to prevent being sussed and discarded once I reveal how the invention works. I don't have the $ to file the patent myself and it uses their original invention anyway.