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:
Apr. 30, 2024
Filed:
Sep. 30, 2022
Hyundai Transys Inc., Seosan-si, KR;
Chin Yang Co., Ltd., Yangsan-si, KR;
Jae Yong Ko, Suwon-si, KR;
Seung Keon Woo, Yangsan-si, KR;
Young Tae Cho, Busan, KR;
Won Sug Choi, Gimhae-si, KR;
Sung Yoon Lee, Busan, KR;
Jae Kwang Lee, Hwaseong-si, KR;
Jun Ho Song, Hwaseong-si, KR;
HYUNDAI TRANSYS INC., Seosan-si, KR;
CHIN YANG CO., LTD., Yangsan-si, KR;
Abstract
Disclosed is a method of manufacturing a polyurethane filter foam having excellent air permeability, elasticity, and restoring force. In the method of manufacturing the polyurethane filter foam, the cell size of the filter foam is made regular by controlling the pressure by adjusting the diameter of the foaming head of a foaming machine, rather than adding a cell opener, cell irregularity caused by poor dispersion of the cell opener is alleviated, and air permeability, porosity, and compression set are excellent.