Article 8. Unless otherwise agreed, the right to apply for a patent belongs to an invention-creation completed in cooperation with two or more units or individuals, or an invention-creation entrusted by other units or individuals. After the application is approved, the applicant unit or individual shall be the patentee.
So your unit is an invention entrusted by other units. If there is no agreement in the contract, the patent application right belongs to the completing unit (that is, your unit); After the application is approved, the applicant is the patentee.
Hope to adopt, can ask.