US Patent Issued to CLOVER NETWORK COM CO . on April 8 for "Device, method, program, and information provision system for telephone number research" (Japanese Inventor)

ALEXANDRIA, Va., April 9 -- United States Patent no. 12,273,399, issued on April 8, was assigned to CLOVER NETWORK COM CO . LTD. (Tokyo).

"Device, method, program, and information provision system for telephone number research" was invented by Yasunori Kawakami (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "According to one embodiment, a telephone number research device researches on the usage status of a telephone number in an IMS network, an NGN network, and an IP network without ringing an incoming call by transmitting a specific SIP message that causes call rejection using an IMS interconnection interface or the like for interconnection between carriers. The telephone number research device is con...