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:
Jun. 25, 2019
Filed:
Apr. 03, 2015
3m Innovative Properties Company, St. Paul, MN (US);
Xuan Jiang, Maplewood, MN (US);
Kuan-Yin Lin, Woodbury, MN (US);
Michelle M Mok, St. Paul, MN (US);
Naiyong Jing, St. Paul, MN (US);
Derek J. Dehn, Maplewood, MN (US);
Richard J. Pokorny, Maplewood, MN (US);
Ta-Hua Yu, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
Articles are described including a first microfiltration membrane layer having a first major surface and a second major surface disposed opposite the first major surface, and a first silica layer directly attached to the first major surface of the first microfiltration membrane layer. The first silica layer includes a polymeric binder and acid-sintered interconnected silica nanoparticles arranged to form a continuous three-dimensional porous network. A method of making an article is also described, including providing a first microfiltration membrane layer having a first major surface and a second major surface disposed opposite the first major surface, and forming a first silica layer on the first major surface.