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, 2020
Filed:
May. 30, 2018
Chan Kyu Park, Gyeonggi-do, KR;
Sang Kyung Ahn, Seoul, KR;
Yong Ku Kim, Seoul, KR;
Hyun Sup Noh, Seoul, KR;
Eun Seok Lee, Seoul, KR;
Young Kee Lew, Seoul, KR;
Byong Kap Jeon, Gyeonggi-do, KR;
Jae Eun Jung, Gyeonggi-do, KR;
Chan Kyu Park, Gyeonggi-do, KR;
Sang Kyung Ahn, Seoul, KR;
Yong Ku Kim, Seoul, KR;
Hyun Sup Noh, Seoul, KR;
Eun Seok Lee, Seoul, KR;
Young Kee Lew, Seoul, KR;
Byong Kap Jeon, Gyeonggi-do, KR;
Jae Eun Jung, Gyeonggi-do, KR;
SAMSUNG C&T CORPORATION, Seoul, KR;
Abstract
An RC lattice beam is provided that can greatly dampen the transfer of vibrations in particular. As the concrete included in the RC lattice beam is polymer concrete that contains a polymer, fine-scale vibrations that may otherwise affect exposure apparatuses may be effectively dampened, while the depth of the conventional lattice beam may be kept the same. Thus, a high-damping RC lattice beam is provided that is capable of maximizing the performance of a precision exposure apparatus by reducing the defect rate and improving productivity.