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:
Jun. 02, 2026
Filed:
Jul. 31, 2020
Maxell, Ltd., Kyoto, JP;
Yasunobu Hashimoto, Otokuni-gun, JP;
Hideyuki Kuwajima, Otokuni-gun, JP;
Nobutaka Okuyama, Otokuni-gun, JP;
Hitoshi Akiyama, Otokuni-gun, JP;
Susumu Yoshida, Otokuni-gun, JP;
Maxell, Ltd., Kyoto, JP;
Abstract
A position estimation system uses an information terminal and has an improved position accuracy. To achieve the purpose, this position estimation system is provided with a first information terminal having a function to transmit a wireless signal associated with identification information and a second information terminal having a function to measure a reception intensity of the wireless signal, and is configured in such a way that: the reception intensity of the wireless signal transmitted by the first information terminal is measured by the second information terminal; at least one of the first information terminal and the second information terminal measures a movement distance; and at least one of the first information terminal and the second information terminal estimates a relative positional relationship between the first information terminal and the second information terminal from a change in the reception intensity of the wireless signal with respect to the movement distance.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile