https://patentbrief.org/company/american-express-travel-related-services-co-inc Plain-English explanations of patents assigned to American Express Travel Related Services Co Inc, newest first. en-us Mon, 15 Jun 2026 06:05:36 GMT https://patentbrief.org/patent/us/10176475/square-point-of-sale A system that lets one payment card handle both retail shopping and transit fares, automatically converting loyalty points between different geographic regions to cover travel costs. Tue, 08 Jan 2019 00:00:00 GMT https://patentbrief.org/patent/us/10176475/square-point-of-sale https://patentbrief.org/patent/us/7672870/amazon-prime A system that links store-specific product codes to universal manufacturer codes to help consumers track their spending and stay within personal budgets. Tue, 02 Mar 2010 00:00:00 GMT https://patentbrief.org/patent/us/7672870/amazon-prime