Patents Assigned to Daramic LLC
  • Patent number: 11502374
    Abstract: A battery separator has performance enhancing additives or coatings, fillers with increased friability, increased ionic diffusion, decreased tortuosity, increased wettability, reduced oil content, reduced thickness, decreased electrical resistance, and/or increased porosity. The separator in a battery reduces the water loss, lowers acid stratification, lowers the voltage drop, and/or increases the CCA.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: November 15, 2022
    Assignee: Daramic, LLC
    Inventors: Mohammed Naiha, Jörg Deiters, Ahila Krishnamoorthy, Eric H. Miller, J. Kevin Whear, Robert W. Saffel, Naoto Miyake, Kanak Kuwelkar
  • Patent number: 11450924
    Abstract: A battery separator for extending the cycle life of a battery has a separator and a conductive layer. The conductive layer is disposed upon the separator. The conductive layer is adapted to be in contact with the positive electrode of the battery thereby providing a new route of current to and from the positive electrode.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: September 20, 2022
    Assignee: Daramic, LLC
    Inventors: Eric Henri Miller, John Randolph Timmons, John Kevin Whear
  • Patent number: 11335974
    Abstract: A separator is provided with a novel construction and/or a combination of improved properties. Batteries, methods, and systems associated therewith are also provided. In certain embodiments, novel or improved separators, battery separators, enhanced flooded battery separators, batteries, cells, and/or methods of manufacture and/or use of such separators, battery separators, enhanced flooded battery separators, cells, and/or batteries are provided. In addition, there is disclosed herein methods, systems, and battery separators having a reduced ER, improved puncture strength, improved separator CMD stiffness, improved oxidation resistance, reduced separator thickness, reduced basis weight, and any combination thereof.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: May 17, 2022
    Assignee: Daramic, LLC
    Inventors: J. Kevin Whear, Mohammed Naiha
  • Patent number: 11316231
    Abstract: In accordance with at least selected embodiments, the present disclosure or invention is directed to improved battery separators, high conductance separators, improved lead-acid batteries, such as flooded lead-acid batteries, high conductance batteries, improved systems, and/or, improved vehicles including such batteries, and/or methods of manufacture or use of such separators or batteries, and/or combinations thereof. In accordance with at least certain embodiments, the present disclosure or invention is directed to improved lead acid batteries incorporating the improved separators and which exhibit increased conductance. Particular, non-limiting examples may include lead acid battery separators having structure or features designed to improve conductance, lower ER, lower water loss, and the like.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: April 26, 2022
    Assignee: Daramic, LLC
    Inventors: Eric H. Miller, Nicholas R. Shelton, William L. Walter
  • Patent number: 11302991
    Abstract: A battery separator for a lead/acid battery is resistant to oxidation arising from the use of water or acid containing contaminants, for example chromium (Cr), manganese (Mn), titanium (Ti), copper (Cu), and the like. The separator is a microporous membrane including a rubber. The rubber is no more than about 12% by weight of the separator. The rubber may be rubber latex, tire crumb, and combinations thereof. The rubber may be impregnated into the microporous membrane. The microporous membrane may be a microporous sheet of polyolefin, polyvinyl chloride, phenol-formaldehyde resins, cross-linked rubber, or nonwoven fibers. A method for preventing the oxidation and/or extending battery life of the separator is also included.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: April 12, 2022
    Assignee: Daramic, LLC
    Inventors: Eric H. Miller, J. Kevin Whear, Jeffrey K. Chambers
  • Patent number: 11271270
    Abstract: In accordance with at least selected embodiments, the present application or invention is directed to novel or improved porous membranes or substrates, separator membranes, separators, composites, electrochemical devices, batteries, methods of making such membranes or substrates, separators, and/or batteries, and/or methods of using such membranes or substrates, separators and/or batteries. In accordance with at least certain embodiments, the present application is directed to novel or improved porous membranes having a coating layer, battery separator membranes having a coating layer, separators, energy storage devices, batteries, including lead acid batteries including such separators, methods of making such membranes, separators, and/or batteries, and/or methods of using such membranes, separators and/or batteries.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: March 8, 2022
    Assignee: Daramic, LLC
    Inventors: J. Kevin Whear, Ahíla Krishnamoorthy, Susmitha Appikatla
  • Patent number: 11208558
    Abstract: In accordance with at least certain embodiments of the present invention, a novel concept of utilizing PIMS minerals as a filler component within a microporous lead-acid battery separator is provided. In accordance with more particular embodiments or examples, the PIMS mineral (preferably fish meal, a bio-mineral) is provided as at least a partial substitution for the silica filler component in a silica filled lead acid battery separator (preferably a polyethylene/silica separator formulation). In accordance with at least selected embodiments, the present invention is directed to new or improved batteries, separators, components, and/or compositions having heavy metal removal capabilities and/or methods of manufacture and/or methods of use thereof.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: December 28, 2021
    Assignee: Daramic, LLC
    Inventors: Jeffrey K. Chambers, Tejas R. Shah
  • Patent number: 11183738
    Abstract: In accordance with at least selected embodiments or aspects, the present invention is directed to improved, unique, and/or complex performance lead acid battery separators, such as improved flooded lead acid battery separators, batteries including such separators, methods of production, and/or methods of use. The preferred battery separator of the present invention addresses and optimizes multiple separator properties simultaneously. It is believed that the present invention is the first to recognize the need to address multiple separator properties simultaneously, the first to choose particular multiple separator property combinations, and the first to produce commercially viable multiple property battery separators, especially such a separator having negative cross ribs.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: November 23, 2021
    Assignee: Daramic, LLC
    Inventors: J. Kevin Whear, Eric H. Miller, Margaret R. Roberts
  • Patent number: 11152647
    Abstract: New or improved battery separators for lead-acid batteries that include a carbon or mineral additive applied to the separator. In possibly preferred embodiments, the battery separator may include engineered carbon materials applied to the battery separator to modify sulfate crystal formation while decreasing the detrimental consequences of excessive gas evolution into the negative electrode itself. In one embodiment, a method of enhancing the lead-acid energy storage performance of a lead-acid battery may include delivering carbon to the negative active material surface of the battery separator where the carbon may effectively enhance charge acceptance and improve life cycle performance of a lead-acid battery.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: October 19, 2021
    Assignee: Daramic, LLC
    Inventors: J. Kevin Whear, James P. Perry, Jeffrey K. Chambers, Larry A. Spickard, John R. Timmons
  • Patent number: 11145934
    Abstract: Disclosed herein are novel or improved fibrous layers, composites, composite separators, separators, composite mat separators, composite mat separators containing fibers and silica particles, battery separators, lead acid battery separators, and/or flooded lead acid battery separators, and/or batteries, cells, and/or methods of manufacture and/or use of such fibrous layers, composites, composite separators, separators, battery separators, lead acid battery separators, cells, and/or batteries. In addition, disclosed herein are methods, systems, and battery separators for enhancing battery life, reducing internal resistance, reducing metalloid poisoning, reducing acid stratification, and/or improving uniformity in at least enhanced flooded batteries.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: October 12, 2021
    Assignee: Daramic, LLC
    Inventors: Ahila Krishnamoorthy, Kumar Manickam, Robert Saffel
  • Patent number: 11128014
    Abstract: In at least one embodiment, a separator is provided with a fibrous mat for retaining the active material on an electrode of a lead-acid battery. New or improved mats, separators, batteries, methods, and/or systems are also disclosed, shown, claimed, and/or provided. For example, in at least one possibly preferred embodiment, a composite separator is provided with a fibrous mat for retaining the active material on an electrode of a lead-acid battery. In at least one possibly particularly preferred embodiment, a PE membrane separator is provided with at least one fibrous mat for retaining the active material on an electrode of a lead-acid battery. In accordance with at least certain embodiments, aspects and/or objects, the present invention, application, or disclosure may provide solutions, new products, improved products, new methods, and/or improved methods, and/or may address issues, needs, and/or problems of PAM shedding.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: September 21, 2021
    Assignee: Daramic, LLC
    Inventors: Eric H. Miller, Ahila Krishnamoorthy, James P. Perry, J. Kevin Whear
  • Patent number: 11104804
    Abstract: In accordance with at least selected embodiments or aspects, the present invention is directed to improved, unique, and/or high performance ISS lead acid battery separators, such as improved ISS flooded lead acid battery separators, ISS batteries including such separators, methods of production, and/or methods of use. The preferred ISS separator may include negative cross ribs and/or PIMS minerals. In accordance with more particular embodiments or examples, a PIMS mineral (preferably fish meal, a bio-mineral) is provided as at least a partial substitution for the silica filler component in a silica filled lead acid battery separator (preferably a polyethylene/silica separator formulation). In accordance with at least selected embodiments, the present invention is directed to new or improved batteries, separators, components, and/or compositions having heavy metal removal capabilities and/or methods of manufacture and/or methods of use thereof.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: August 31, 2021
    Assignee: Daramic, LLC
    Inventors: J. Kevin Whear, John R. Timmons, Jeffrey K. Chambers, Tejas R. Shah
  • Patent number: 11018399
    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 12, 2017
    Date of Patent: May 25, 2021
    Assignee: Daramic, LLC
    Inventors: Jorg Deiters, Klaus Heinrich Ihmels
  • Publication number: 20210113970
    Abstract: In at least one embodiment, a microporous membrane having a moderate to high water vapor permeability and high liquid water penetration resistance is disclosed. The microporous membrane may be used in building applications, including as or as part of a building wrap, a rain screen, a roofing underlayment, a flashing, a sound proofing material, or an insulation material. The microporous membrane may include at least one thermoplastic polymer, at least one filler, and at least one processing oil. The microporous membrane may be flat or may have ribs. The microporous membrane may include at least one scrim component. A method for forming the microporous membrane is also disclosed.
    Type: Application
    Filed: October 9, 2018
    Publication date: April 22, 2021
    Applicant: Daramic, LLC
    Inventors: Matthew STAINER, Eric H. MILLER, Matt J. WOLSKI, Tyler MUNHOLLON, Daniel R. ALEXANDER, Gary L. FULKERSON
  • Patent number: 10985428
    Abstract: Improved battery separators are disclosed herein for use in flooded lead-acid batteries, and in particular enhanced flooded lead-acid batteries. The improved separators disclosed herein provide for enhanced electrolyte mixing and substantially reduced acid stratification. The improved flooded lead-acid batteries may be advantageously employed in applications in which the battery remains in a partial state of charge, for instance in start/stop vehicle systems. Also, improved lead-acid batteries, such as flooded lead-acid batteries, improved systems that include a lead-acid battery and a battery separator, improved battery separators, improved vehicles including such systems, and/or methods of manufacture and/or use may be provided.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: April 20, 2021
    Assignee: Daramic, LLC
    Inventors: Eric H. Miller, M. Neal Golovin, Ahila Krishnamoorthy, Matthew Howard, James P. Perry, J. Kevin Whear
  • Patent number: 10938010
    Abstract: Disclosed herein are soluble content absorbent glass mats or AGM separators for VRLA, AGM, or VRLA AGM batteries. Such glass mats may be prepared from insoluble glass fibers blended with soluble content materials. Upon exposure to a suitable solvent, the dissolving or solvating of the soluble content produces voids within the glass mat. The voids enhance the absorption of the solvent within the glass mat. The soluble content may be acid-soluble glass fibers or microfibers.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: March 2, 2021
    Assignee: Daramic, LLC
    Inventors: Ahila Krishnamoorthy, Daniel R. Alexander
  • Patent number: 10923700
    Abstract: A multilayer deep cycle battery separator comprising at least two layers of an automotive-sized separator bonded or welded together. The automotive-sized separator layers include a backweb having a backweb thickness between 6 to 10 mils, an overall thickness of between 25 to 65 mils, and a rib base width of between 20 to 35 mils. The automotive-sized separator layers also have an extraction time of between 45 to 75 seconds, thereby providing an overall extraction time of less than a standard deep cycle battery separator.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: February 16, 2021
    Assignee: Daramic, LLC
    Inventors: J. Kevin Whear, Eric H. Miller
  • Patent number: 10833306
    Abstract: A separator for a lead acid battery is a porous membrane having a positive electrode face and a negative electrode face. A plurality of longitudinally extending ribs, a plurality of protrusions or a nonwoven material may be disposed upon the positive electrode face. A plurality of transversely extending ribs are disposed upon the negative electrode face. The transverse ribs disposed upon the negative electrode face are preferably juxtaposed to a negative electrode of the lead acid battery, when the separator is placed within that battery.
    Type: Grant
    Filed: February 19, 2018
    Date of Patent: November 10, 2020
    Assignee: Daramic, LLC
    Inventors: Eric H. Miller, J. Kevin Whear
  • Patent number: 10811655
    Abstract: A battery separator has performance enhancing additives or coatings, fillers with increased friability, increased ionic diffusion, decreased tortuosity, increased wettability, reduced oil content, reduced thickness, decreased electrical resistance, and/or increased porosity. The separator in a battery reduces the water loss, lowers acid stratification, lowers the voltage drop, and/or increases the CCA.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: October 20, 2020
    Assignee: Daramic, LLC
    Inventors: Mohammed Naiha, Joerg Deiters, Ahila Krishnamoorthy, Eric H. Miller, J. Kevin Whear, Robert W. Saffel, Naoto Miyake, Kanak Kuwelkar
  • Patent number: 10770704
    Abstract: Improved battery separators, batteries, and systems, as well as methods relating thereto are disclosed herein for use in various lead acid batteries such as valve-regulated lead acid (VRLA) batteries that include one or more AGM layers. The improved battery separators described herein may provide a battery system with an advantage of a significantly decreased acid filling time and a significantly increased acid filling speed. Various improved batteries, methods and systems are described herein using such improved battery separators that increase acid filling speed and decrease acid filling time for a VRLA battery.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: September 8, 2020
    Assignee: Daramic, LLC
    Inventors: Eric H. Miller, Robert W. Saffel