1. Prepare change documents: You need to prepare an appropriate change document, namely "change statement" or "change inventor statement". The change statement shall include the details of the original inventor and the details of the inventor to be added or deleted.
2. Contact the United States Patent and Trademark Office: submit the change documents to the United States Patent and Trademark Office. You can submit the change documents to USPTO through the online application system or by mail. When submitting the application, you need to pay the applicable fees.
3. Follow-up process: Once the change document is submitted, USPTO will review the application. The review process includes evaluating the compliance and accuracy of the document. If USPTO thinks it is appropriate to change the file, they will update the inventor information and send you a confirmation. Please note that there may be some restrictions on the inventor who changes the authorized patent. Please consult a professional patent agent or lawyer to help you go through the procedures for changing the inventor and ensure that the operation is carried out in accordance with relevant laws and regulations. For complicated situations or related legal issues, it is strongly recommended to consult a professional intellectual property lawyer for accurate legal advice and guidance.