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:
Jul. 14, 2026
Filed:
Nov. 16, 2021
Lvfen Environmental Protection Tech. Co., Ltd., Beijing, CN;
Tianbo Liu, Beijing, CN;
Huachangfeng Equipment Inc., Beijing, CN;
Abstract
A method and apparatus for removing impurities from granules are provided, the method includes: adopting at least one of a low-frequency acoustic wave gas guided wave mode, a high-frequency acoustic wave gas guided wave mode and a high-frequency acoustic wave solid guide mode, so that the acoustic waves are transmitted to the granules to be removed to weaken the bonding force between the granules and the impurities in the granules to be removed, while using airflow to enhance the separation of the impurities and the granules. Among them, the low-frequency acoustic wave gas guided wave mode is that the low-frequency acoustic wave is transmitted by using gas as a wave guide medium; the high-frequency acoustic wave gas guided wave mode is that the high-frequency acoustic wave is transmitted by using gas as a wave guide medium.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile