Patents Assigned to Daramic, Inc.
  • Patent number: 9876209
    Abstract: The invention relates to a thermoplastic polymer-based battery separator, which contains a compound of formula R (OR1)n(COOMx+1/x)m. In said formula, R represents a non-aromatic hydrocarbon group comprising between 10 and 4,200 carbon atoms, which can be interrupted by oxygen atoms, R1 represents H, —(CH2)kCOOMx+1/x or —(CH2)k—SO3Mx+1/x, whereby k stands for 1 or 2, M represents an alkali or earth alkaline metal ion, H+ or NH4+, whereby not all variables of M are defined simultaneously as H+, n stands for 0 or 1, m stands for 0 or a whole number from 10 to 1,400 and x stands for 1 or 2. The ratio of oxygen atoms to carbon atoms in the compound according to the aforementioned formula ranges between 1:1.5 and 1:30 and n and m cannot simultaneously represent zero.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: January 23, 2018
    Assignee: Daramic, Inc.
    Inventors: Jörg Deiters, Klaus Heinrich Ihmels
  • Publication number: 20120094183
    Abstract: The invention relates to a thermoplastic polymer-based battery separator, which contains a compound of formula R (OR1)n(COOMx+1/x)m. In said formula, R represents a non-aromatic hydrocarbon group comprising between 10 and 4,200 carbon atoms, which can be interrupted by oxygen atoms, R1 represents H, —(CH2)kCOOMx+1/x or —(CH2)k—SO3Mx+1/x, whereby k stands for 1 or 2, M represents an alkali or earth alkaline metal ion, H+ or NH4+, whereby not all variables of M are defined simultaneously as H+, n stands for 0 or 1, m stands for 0 or a whole number from 10 to 1,400 and x stands for 1 or 2. The ratio of oxygen atoms to carbon atoms in the compound according to the aforementioned formula ranges between 1:1.5 and 1:30 and n and m cannot simultaneously represent zero.
    Type: Application
    Filed: December 21, 2011
    Publication date: April 19, 2012
    Applicant: Daramic, Inc.
    Inventors: Jörg Deiters, Klaus Heinrich Ihmels
  • Publication number: 20100104946
    Abstract: The invention relates to a thermoplastic polymer-based battery separator, which contains a compound of formula R (OR1)n(COOMx+1/x)m. In said formula, R represents a non-aromatic hydrocarbon group comprising between 10 and 4,200 carbon atoms, which can be interrupted by oxygen atoms, R1 represents H, —(CH2)kCOOMx+1/x or —(CH2)k—SO3Mx+1/x, whereby k stands for 1 or 2, M represents an alkali or earth alkaline metal ion, H+ or NH4+, whereby not all variables of M are defined simultaneously as H+, n stands for 0 or 1, m stands for 0 or a whole number from 10 to 1,400 and x stands for 1 or 2. The ratio of oxygen atoms to carbon atoms in the compound according to the aforementioned formula ranges between 1:1.5 and 1:30 and n and m cannot simultaneously represent zero.
    Type: Application
    Filed: October 19, 2009
    Publication date: April 29, 2010
    Applicant: Daramic Inc.
    Inventors: Jörg Deiters, Klaus Heinrich Ihmels
  • Patent number: 7425387
    Abstract: The invention relates to a separator made of elastic plastic and suitable for use in a lead storage battery, and consisting of sheet material with an inner region and two peripheral regions and having ribs running in the longitudinal direction on at least one side, the ribs in the inner region being more widely spaced than those in the peripheral region, characterized in that at least the first 3 ribs in the peripheral region that are adjacent to the inner region have a cross-section essentially in the form of a triangle projecting from the level of the sheet material, with the base of the triangle on the sheet material, one side of the triangle facing the inner region and the other side facing the periphery, the side facing the inner region being longer than that facing the periphery, and to a lead storage battery containing such separators.
    Type: Grant
    Filed: July 31, 2004
    Date of Patent: September 16, 2008
    Assignee: Daramic, Inc.
    Inventor: Werner Bohnstedt
  • Patent number: 7238744
    Abstract: An article of manufacture comprises an ultrahigh molecular weight polyethylene (UHMWPE) mixed with a processing oil and a lubricant selected from the group consisting of fatty acid esters, ethoxylated fatty acid esters, glycol esters, PEG esters, glycerol esters, ethoxylated esters, sorbitol esters, ethoxylated sorbitol esters, aromatic ethoxylates, alcohol ethoxylates, mercaptan ethoxylates, modified ethoxylates, amide surfactants, phosphate esters, phosphonate esters, phosphite esters, alkyl sulfates, fatty acid ethers, alkyl ether sulfates, alkylaryl ether sulfates, sulfonates, naphthalene sulfonates, sulfosuccinates, sulfonated esters, sulfonated amides, alkyl ether carboxylates, alkylaryl ether carboxylates, quaternary amines, amino quaternary amines, ethoxylated amines, imidazoline derivatives, betaines, sultaines, aminopropionate, catechol derivatives, saturated fatty acids, unsaturated fatty acids, and combinations thereof. The method for making those articles is also disclosed.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: July 3, 2007
    Assignee: Daramic, Inc.
    Inventors: Joseph G. Yaritz, J. Kevin Whear
  • Patent number: 7214444
    Abstract: Battery separators made of a wettable, uniform mat of melt blown fibers. The melt blown fibers are thermally bonded to one another. These fibers are made of a thermoplastic material. The fibers have a diameter in the range of 0.1 to 13 microns (?) and lengths greater than 12 millimeters (mm). The mat has a basis weight ranging from 6 to 160 grams per square meter (g/m2), a thickness of less than 75 microns (?), and an average pore size of 0.3 to 50 microns (?).
    Type: Grant
    Filed: September 23, 2003
    Date of Patent: May 8, 2007
    Assignee: Daramic, Inc.
    Inventor: Jerry Zucker
  • Patent number: 7094498
    Abstract: A separator for a storage battery is a microporous membrane having a back web and a battlemented rib standing on the back web.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: August 22, 2006
    Assignee: Daramic, Inc.
    Inventors: Eric H. Miller, J. Kevin Whear
  • Patent number: 6869726
    Abstract: A battery separator comprising at least one fibrous layer and at least one support layer, wherein the support layer is formed of an acid-resistant material and comprises a plurality of macroscopic openings.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: March 22, 2005
    Assignee: Daramic, Inc.
    Inventor: Jerry Zucker
  • Patent number: 6852444
    Abstract: A battery separator comprising at least one fibrous layer and at least one support layer, wherein the support layer is formed of an acid-resistant material and comprises a plurality of macroscopic openings.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: February 8, 2005
    Assignee: Daramic, Inc.
    Inventor: Jerry Zucker
  • Publication number: 20040126664
    Abstract: Battery separators made of a wettable, uniform mat of melt blown fibers. The melt blown fibers are thermally bonded to one another. These fibers are made of a thermoplastic material. The fibers have a diameter in the range of 0.1 to 13 microns (&mgr;) and lengths greater than 12 millimeters (mm). The mat has a basis weight ranging from 6 to 160 grams per square meter (g/m2), a thickness of less than 75 microns (&mgr;), and an average pore size of 0.
    Type: Application
    Filed: September 23, 2003
    Publication date: July 1, 2004
    Applicant: Daramic Inc.
    Inventor: Jerry Zucker
  • Patent number: 6703161
    Abstract: The invention concerns a battery separator comprising at least one first fibrous layer, at least one second fibrous layer, and at least one microporous polymer layer which is sandwiched between at least two fibrous layers, wherein the microporous polymer layer has an average pore size of less than 1 &mgr;m and wherein the at least one first fibrous layer has a thickness of at least 0.6 mm.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: March 9, 2004
    Assignee: Daramic, Inc.
    Inventor: Jerry Zucker
  • Patent number: 6692868
    Abstract: Battery separators made of a wettable, uniform mat of melt blown fibers. The melt blown fibers are thermally bonded to one another. These fibers are made of a thermoplastic material. The fibers have a diameter in the range of 0.1 to 13 microns (&mgr;) and lengths greater than 12 millimeters (mm). The mat has a basis weight ranging from 6 to 160 grams per square meter (g/m2), a thickness of less than 75 microns (&mgr;), and an average pore size of 0.3 to 50 microns (&mgr;).
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: February 17, 2004
    Assignee: Daramic, Inc.
    Inventor: Jerry Zucker
  • Patent number: 6689509
    Abstract: The invention concerns a battery separator comprising at least one microporous polymer layer and at least one fibrous layer, wherein the microporous polymer layer comprises micropores with an average pore size of less than 1 &mgr;m and a number of holes with a diameter which is greater than the average diameter of the pores of the fibrous layer.
    Type: Grant
    Filed: February 14, 2002
    Date of Patent: February 10, 2004
    Assignee: Daramic, Inc.
    Inventor: Jerry Zucker
  • Publication number: 20030224245
    Abstract: A separator for a storage battery is a microporous membrane having a back web and a battlemented rib standing on the back web.
    Type: Application
    Filed: May 31, 2002
    Publication date: December 4, 2003
    Applicant: Daramic, Inc.
    Inventors: Eric H. Miller, J. Kevin Whear
  • Patent number: 6539615
    Abstract: A lug brushing assembly (10) that brushes the lugs of battery plates in an in-line manner so as to eliminate extra battery plate handling procedures. The lug brushing assembly (10) more effectively cleans the lugs of battery plates without causing excessive wearing of the brushes or abrasion on the lugs.
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: April 1, 2003
    Assignee: Daramic, Inc.
    Inventor: Galen H. Redden
  • Patent number: 6537696
    Abstract: The preferred embodiment is to a battery separator for a nickel metal hydride (NiMH) battery. The separator includes a wettable, resilient nonwoven web having two spunbond layers sandwiching a melt blown layer. The web has a puncture strength of greater than 6 newtons, a tensile strength of greater than 200 newtons/meter, and an average pore size of less than 20 microns.
    Type: Grant
    Filed: December 20, 2000
    Date of Patent: March 25, 2003
    Assignee: Daramic, Inc.
    Inventors: J. Kevin Whear, Joseph G. Yaritz
  • Patent number: 6485867
    Abstract: The instant invention is directed to the use of lignin in thermoplastics (such as: ultra-high molecular weight polyethylene (UHMWPE)). In the first aspect of the invention, lignins are added to a lead acid battery separator comprising a microporous membrane including an ultra-high molecular weight polyethylene, a filler, and a processing oil. In the second aspect of the invention, lignins are used as a processing aid in thermoplastics.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: November 26, 2002
    Assignee: Daramic, Inc.
    Inventors: Jaime Navarrete, A. Jeff Chapman, Chetan J. Parikh, Roy T. Toomey
  • Publication number: 20020110730
    Abstract: The preferred embodiment is to a battery separator for a nickel metal hydride (NiMH) battery. The separator includes a wettable, resilient nonwoven web having two spunbond layers sandwiching a melt blown layer. The web has a puncture strength of greater than 6 newtons, a tensile strength of greater than 200 newtons/meter, and an average pore size of less than 20 microns.
    Type: Application
    Filed: December 20, 2000
    Publication date: August 15, 2002
    Applicant: Daramic, Inc.
    Inventors: J. Kevin Whear, Joseph G. Yaritz
  • Patent number: 6403264
    Abstract: An invention is described through which it is possible to reduce in quantity the coloured, mostly dark, and frequently adhesive deposits which form in lead accumulators with separators of filled poly-olefins during formation and operation. The essential feature is that the separators contain as plasticizer a process oil with a CA value of ≦6%, a sulphur content of ≦2000 ppm and a polar part of ≦1%. Preferred process oils to be used as plasticizers are relatively naphthenic and naphthenic oils.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: June 11, 2002
    Assignee: Daramic, Inc.
    Inventors: Hellmut Bünsch, Klaus Heinrich Ihmels, Frank Otto Theubert
  • Patent number: 6139795
    Abstract: We describe the use a material which is based on microporous, filler-containing polyolefin and essentially consists of a homogeneous mixture of ultra-high molecular weight polyolefin, filler and plasticizer, for absorbing sweat and other bodily exhalations. This material is preferably treated with antibacterial and/or fungicidal agents and is suitable for avoiding the formation of odor, for example in shoes and articles of clothing. The use in the form of an inner sole which has ribs running at right angles to the longitudinal axis of the inner sole to form hollow spaces is preferred.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: October 31, 2000
    Assignee: Daramic, Inc.
    Inventors: Claude Gaillard, Jacques Meyer