The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 2026
Filed:
Apr. 27, 2021
Ntt, Inc., Tokyo, JP;
Tatsuhiro Aoshima, Tokyo, JP;
Toshinori Usui, Tokyo, JP;
Yuhei Kawakoya, Tokyo, JP;
Makoto Iwamura, Tokyo, JP;
Jun Miyoshi, Tokyo, JP;
NTT, Inc., Tokyo, JP;
Abstract
An unsafe location enumeration unit () enumerates, based on a code of a program, locations that do not satisfy a predetermined condition indicating that type conversion is safe among locations where a type casting occurs in the program. A context extraction unit () transition an automaton corresponding to the locations enumerated by the unsafe location enumeration unit () and extract a context reaching the locations. A vulnerability verification unit () verifies whether the location extracted by the context extraction unit () satisfies an annotation prepared in advance.