ALEXANDRIA, Va., June 12 -- United States Patent no. 12,299,023, issued on May 13, was assigned to Semiconductor Energy Laboratory Co. Ltd. (Atsugi, Japan).

"Document retrieval system" was invented by Junpei Momo (Sagamihara, Japan) and Hiromichi Godo (Isehara, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A document retrieval system that retrieves documents, with concepts of the documents taken into account, is provided. The document retrieval system (100) includes an input unit (101), a first processing unit (102), a storage unit (105), a second processing unit (103), and an output unit (104). The input unit (101) has a function of inputting a first document (20), the first processing unit (102) has...