US 11,705,582 B2
Separators for flat plate batteries, improved batteries, and related methods
Surendra Kumar Mittal, Bangalore (IN); Naveen Prabhu Shanmugam, Bangalore (IN); J. Kevin Whear, Utica, KY (US); and Eric H. Miller, Philpot, KY (US)
Assigned to Daramic, LLC, Charlotte, NC (US)
Filed by Daramic, LLC, Charlotte, NC (US)
Filed on May 29, 2020, as Appl. No. 16/886,805.
Application 16/886,805 is a division of application No. 15/235,197, filed on Aug. 12, 2016, granted, now 10,693,118.
Application 15/235,197 is a continuation of application No. PCT/US2015/045060, filed on Aug. 13, 2015.
Claims priority of provisional application 62/204,693, filed on Aug. 13, 2015.
Prior Publication US 2020/0295335 A1, Sep. 17, 2020
Int. Cl. H01M 10/12 (2006.01); H01M 50/446 (2021.01); H01M 50/466 (2021.01)
CPC H01M 10/12 (2013.01) [H01M 50/446 (2021.01); H01M 50/466 (2021.01)] 10 Claims
OG exemplary drawing
 
1. A battery separator for a lead acid battery such as a flat-plate battery comprising:
a ribbed porous sheet comprising a bottom edge and joined lateral edges that form a pocket or envelope having an outer surface and an inner surface;
wherein the bottom edge has one or more slits through the sheet that do not extend to the joined lateral edges.