Robert Nark — 12 Patents at Celgard

Robert Nark has been granted 12 US patents while listed as an inventor at Celgard. The first was granted in 2004 and the most recent in November 2025. Robert Nark ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list Robert Nark in Fort Mill, SC, US.

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #	Title	Co-Inventors	Date
12466119	Microlayer membranes, improved battery separators, and related methods	Kang Karen Xiao, Eric J. Penegar, Takahiko Kondo, Eric S. White, Xingxiang Zhang +3 more	2025-11-11
12370733	Microlayer membranes, improved battery separators, and related methods	Kang Karen Xiao, Eric J. Penegar, Takahiko Kondo, Eric White, Xiaomin Zhang +3 more	2025-07-29
12191441	Microlayer membranes, improved battery separators, and methods of manufacture and use	Kang Karen Xiao, Eric J. Penegar, Takahiko Kondo, Eric White, Xiaomin Zhang +1 more	2025-01-07
12134259	Laminated multilayer membranes, separators, batteries, and methods	Xiaomin Zhang, Eric White, Kang Karen Xiao, Insik Jeon, Kristoffer K. Stokes +2 more	2024-11-05
11969929	Microlayer membranes, battery separators, batteries, and related methods	Kang Karen Xiao, Stefan Reinartz, Takahiko Kondo, Hisaki Ikebata, Eric J. Penegar +6 more	2024-04-30
11784344	Microlayer membranes, improved battery separators, and methods of manufacture and use	Kang Karen Xiao, Eric J. Penegar, Takahiko Kondo, Eric White, Xiaomin Zhang +1 more	2023-10-10
11728546	Microporous membrane separators for lithium ion rechargeable batteries and related methods	Xiaomin Zhang, Kang Karen Xiao, Ron Smith	2023-08-15
11495865	Microlayer membranes, improved battery separators, and related methods	Kang Karen Xiao, Eric J. Penegar, Takahiko Kondo, Eric White, Xiaomin Zhang +3 more	2022-11-08
11101525	Laminated multilayer membranes, separators, batteries, and methods	Xiaomin Zhang, Eric White, Kang Karen Xiao, Insik Jeon, Kristoffer K. Stokes +2 more	2021-08-24
11056750	Microlayer membranes, improved battery separators, and methods of manufacture and use	Kang Karen Xiao, Eric J. Penegar, Takahiko Kondo, Eric White, Xiaomin Zhang +1 more	2021-07-06
10347890	Laminated multilayer membranes, separators, batteries, and methods	Xiaomin Zhang, Eric White, Kang Karen Xiao, Insik Jeon, Kristoffer K. Stokes +2 more	2019-07-09
6692867	Battery separator-pin removal	Ronald W. Call, Donald K. Simmons, Mark W. Ferebee	2004-02-17

Robert Nark — 12 Patents

Issued Patents All Time

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