Cooper co-founded CBSI, a company focused on billing software for the cellular industry. This reflected his continued interest in the business side of mobile communication.

CBSI was acquired by Cincinnati Bell Information Systems, demonstrating the success of Cooper's entrepreneurial venture.

Cooper founded ArrayComm, a company that developed smart antenna technology to increase cellular capacity and coverage. This venture addressed the growing demand for mobile communication services.

Cooper remained actively involved with ArrayComm, guiding its technological development and business strategy. The company's technology played a significant role in enhancing cellular network performance.