| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 429253000 | Phenolic or thermosetting resin | 8 |
| 20090098465 | Microporous Membrane And Manufacturing Method - A microporous membrane having excellent properties which is produced by extruding a combination of a diluent or solvent and a polyolefin resin composition comprising (a) from about 40 to about 60% of a first polyethylene resin having a weight average molecular weight of from about 2.5×10 | 04-16-2009 |
| 20110027659 | MICROPOROUS FILM AND METHOD FOR PRODUCING THE SAME - Provided is a microporous film formed of a thermoplastic resin composition comprising 100 parts by mass of (a) a polyolefin resin and from 5 to 90 parts by mass of (b) a polyphenylene ether resin; the microporous film having a sea-island structure with the polyolefin resin as a sea portion and with the polyphenylene ether resin as an island portion and having a air permeability of from 10 sec/100 cc to 5000 sec/100 cc. The microporous film does not break easily even at high temperatures and has good heat resistance. | 02-03-2011 |
| 20110244336 | SINGLE-LAYER MICROPOROUS FOIL FOR BATTERIES HAVING SHUT-OFF FUNCTION - Single-layer or multilayer, biaxially oriented, microporous foil having a shut-off function, which comprises propylene homopolymer and propylene block copolymer, polyethylene and β-nucleating agent. | 10-06-2011 |
| 20120070748 | MICROPOROUS MEMBRANES, METHODS FOR MAKING THESE MEMBRANES, AND THE USE OF THESE MEMBRANES AS BATTERY SEPARATOR FILMS - The invention relates to microporous membranes having high meltdown temperature, high air permeability, and high puncture strength. The invention also relates to the production of such membranes and the use of such membranes as battery separator film. | 03-22-2012 |
| 20120156570 | Microporous Polyethylene Film with Good Property of Strength and Permeability at High Temperature - The present invention relates to a microporous polyethylene film for use as battery separator. The microporous polyethylene film according to the present invention is characterized by having a film thickness of 5-40 μm, a porosity of 35-55%, a permeability from 2.5×10 | 06-21-2012 |
| 20130065133 | BATTERY SEPARATOR COMPRISING A POLYOLEFIN NANOFILAMENT POROUS SHEET - Disclosed is a highly safe battery separator, in particular a separator for a lithium ion secondary battery, which reduces internal resistance, achieves good ionic conductivity, prevents passing of electrode active materials, and also prevents electrical short circuit by controlling deposition of lithium metal (dendrite). Also disclosed is a means for stably producing the battery separator with high productivity. Specifically disclosed are: a battery separator which is composed of a porous polyolefin sheet that is formed from a group of polyolefin nanofilaments that have an average filament diameter of less than 1 μm and a filament size distribution of 0.2 or less; and a means for producing the battery separator. | 03-14-2013 |
| 20130302696 | MICROPOROUS MEMBRANE, METHOD FOR PRODUCING SAME, AND BATTERY SEPARATOR USING SAME - The present invention is a microporous membrane comprising polymethylpentene (a), polyethylene (b), and polypropylene (c), the microporous membrane having a meltdown temperature of 180° C. or higher, a TD heat shrinkage at 170° C. of 35% or less, and a thickness change ratio per thickness of 10% or less. | 11-14-2013 |
| 20170233913 | MELT-BLOWN NONWOVEN FABRIC AND METHOD OF MANUFACTURING SAME | 08-17-2017 |
