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:
Mar. 24, 2026
Filed:
Mar. 21, 2024
Amazon Technologies, Inc., Seattle, WA (US);
Henning Lange, Seattle, WA (US);
Krzysztof Marcin Walczak, Sammamish, WA (US);
Naveen Ramakrishnan, Redmond, WA (US);
Gareth James Selfe, San Francisco, CA (US);
Amazon Technologies, Inc., Seattle, WA (US);
Abstract
Described are systems, methods, and apparatus that determine appliance energy usage based on voltage signals sensed at a standard electrical outlet anywhere in an electrical circuit of a location, such as a home or residence, without the need of current measurement of the electrical circuit. Voltage measurements at the electrical outlet may be used to determine a resistance of a line wire of a service drop to a service panel of the location from a transformer that provides power to the location. Likewise, voltage measurements at the electrical outlet may be used to determine a voltage into the service panel. The voltage into the service panel and the resistance at the line wire can be used to determine a current of an appliance operating the location.