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:
Aug. 26, 2025
Filed:
Dec. 09, 2024
Tianjin University, Tianjin, CN;
Minhua Zhang, Tianjin, CN;
He Dong, Tianjin, CN;
Hao Gong, Tianjin, CN;
Guochao Yang, Tianjin, CN;
Yingzhe Yu, Tianjin, CN;
Tianjin University, Tianjin, CN;
Abstract
There is provided a pretreatment process for a resin catalyst for synthesizing bisphenol A. The pretreatment process includes the following steps: firstly, purging the resin catalyst with gas, to remove residual liquid in the resin catalyst; secondly, allowing the vented resin catalyst to be in contact with a replacement washing solution for static replacement, and removing the replacement washing solution; thirdly, allowing the obtained resin catalyst to be in contact with a replacement washing solution for static replacement; and finally, allowing a leachate to be in contact with the resin catalyst, and removing the leachate, to obtain a pretreated resin catalyst.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile