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:
Oct. 04, 2022
Filed:
Mar. 22, 2021
Impinj, Inc., Seattle, WA (US);
Balaji Shyamkumar, Sammamish, WA (US);
Kurt Sundstrom, Woodinville, WA (US);
Scott Cooper, Seattle, WA (US);
Jayasuryan Iyer, Bellevue, WA (US);
Sandesh Doddameti, Seattle, WA (US);
Christopher J. Diorio, Shoreline, WA (US);
Impinj, Inc., Seattle, WA (US);
Abstract
An RFID-based item tracking system may use statistical methods to determine whether a tag or tagged item that does not respond when inventoried is present in a particular zone or reader antenna field-of-view. In one embodiment, the item tracking system may determine an observability of an item based on one or more initial trials. Upon not detecting the item in one or more subsequent trials, the item tracking system may estimate whether the item is still present based on the observability.