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:
Sep. 02, 2025
Filed:
Oct. 31, 2019
Three Stone, Llc., San Jose, CA (US);
Yixiang Jiang, Yuyao, CN;
Jinglei Jiang, Yuyao, CN;
THREE STONE, LLC., San Jose, CA (US);
Abstract
A multilayer blow-molded board comprises an upper layer board and a lower layer board to form a hollow structure. Each of the layer boards comprises an outer layer and an inner layer. The present disclosure has the following advantages: the lower layer board is recessed upward so that the inner layers of the board and the upper layer board fuse with each other to form a supporting contact structure, resulting in enhanced structure strength. Furthermore, the outer layer of the board can utilize a strong surface-strength material whereas the inner layer can utilize a low thermoplastic-shrinkage-rate material to provide a frame support. In addition, a tough and flexible material is adopted for the intermediate layer to improve the overall structural strength of the blow-molded board.