It's been reported by Yonhap News that LG Chem "obtained a patent for its safety-reinforced separator (SRS), a key component of lithium-ion polymer batteries, in Europe and Japan."

LG Chem Says Its SRS Technology is a Major Reason Why OEMs Choose to USE LG Chem Cells

LG Chem Says Its SRS Technology is a Major Reason Why OEMs Choose to USE LG Chem Cells

LG Chem now holds patent rights to SRS in South Korea, the United States, Europe, Japan and China.

What's the big deal with SRS?  According to LG Chem, this SRS technology was a determining factor in getting General Motors, Ford, Volvo, Hyundai and Kia to sign deals with the battery maker.

Yonhap News states:

"SRS serves a crucial process by using a thin coating of ceramic materials to increase the safety of batteries in electric vehicles by separating the negative and positive poles."

With SRS patents held in 4 countries and one continent, LG Chem has basically secured exclusive use of this technology.

Source: Yonhap News