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. 21, 2026
Filed:
May. 18, 2023
Samsung Electronics Co., Ltd., Suwon-si, KR;
Su Keun Kuk, Suwon-si, KR;
Hyun Chul Lee, Suwon-si, KR;
Sang Min Ji, Suwon-si, KR;
Sungwoo Kang, Suwon-si, KR;
Dong Sik Yang, Suwon-si, KR;
SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do, KR;
Abstract
A p-n heterojunction photocatalyst, an air purifier including the p-n heterojunction photocatalyst, and a method of preparing the p-n heterojunction photocatalyst. The p-n heterojunction photocatalyst includes a granule type composite which includes: first compound particles; and second compound particles on at least a portion of surfaces of the first compound particles, wherein the composite has a size of about 0.9 μm to about μm based on a major axis, a standard deviation of the size is about ±0.9 μm or less, and upon exposure to energy irradiation, the composite generates a reactive oxygen species of singlet oxygen (O) to induce photolysis of gaseous pollutants.