U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 429/227 - Metal sulphate or carbonate


Subclass of Class 429 - Chemistry: electrical current producing apparatus, product, and process
Definition: Apparatus in the form of either lead sulphate or lead carbonate.
No. of patents: 34
Last issue date: 09/20/2011


NumberTitleIssue Date
8021784Cureless battery paste and method for producing battery plates
A battery paste composition incorporates and promotes the formation of tetra basic lead sulfate using a micronized TTBLS additive, and eliminates free lead using a special oxide, during paste mixing and drying. Battery plates utilizing the disclosed battery paste co...
09/20/2011
7582384Production of tetrabasic lead sulfate from solid state reactions for the preparation of active plates to be used in lead-acid batteries
A solid state reaction method for the production of tetrabasic lead sulfate includes the steps of mixing a stoichiometric mixture of 5PbO and (NH4)2SO4 and heating the stoichiometric mixture of 5PbO and (NH4)2SO...
09/01/2009
7309478Production of tetrabasic lead sulfate from solid state reactions for the preparation of active plates to be used in lead-acid batteries
A solid state reaction method for the production of tetrabasic lead sulfate includes the steps of mixing a stoichiometric mixture of 3PbO.PbSO4.H2O and PbO and heating the stoichiometric mixture of 3PbO.PbSO4.H2O and PbO at a temperature between 500 and 700° C. for...
12/18/2007
7160647Battery cathode
Batteries are disclosed. In some embodiments, a battery has a cathode that includes CuxMyOzXt, where M is a metal, X includes one or more halides and/or nitrate, x+y is from about 6.8 to about 7.2, and z and t are selected...
01/09/2007
7118830Battery paste additive and method for producing battery plates
A battery paste additive, and process for making the same comprising micronized seed crystals of tetra basic lead sulfate, is added to battery paste and results in accelerated curing time and other improvements in battery performance. The battery paste additive may ...
10/10/2006
7060391Current collector structure and methods to improve the performance of a lead-acid battery
A battery, a battery electrode structure, and methods to make the same. The product and method comprise applying a layer of lead-tin containing alloy to substrates for anodes or cathodes for lead-acid batteries, in which the substrates are porous or reticulated....
06/13/2006
7011805Production of tetrabasic lead sulfate from solid state reactions for the preparation of active plates to be used in lead-acid batteries
The production of tetrabasic lead sulfate by means of solid state reactions at high temperatures allow the formation of powders having a particle size of less than 10 μm. In the methods the chemical reaction that takes place between lead oxide and different sulfate...
03/14/2006
6833216Method of manufacturing a sulfated paste for use in a lead acid cell
A method of manufacturing a sulfated paste for use in a lead acid battery cell comprises introducing sulfuric acid to an oxide of lead and subsequently introducing a tin-containing material. ...
12/21/2004
6617071Active material for high power and high energy lead acid batteries and method of manufacture
A grid plate for high power lead acid battery having a plate (14) covered with a conductive polymeric matrix (10) of preferably polyaniline and its derivatives, which is then coated with nanoscale particles of active material (14) such as lead sulfate and...
09/09/2003
6352795Lead battery with acid reservoirs mixed with active material in particles
This invention concerns a method of increasing the available amount of acid at PAM and NAM in lead battery electrodes and still retain a short distance between the electrode surfaces. With mechanical support of PAM (for example in tubular batteries) in sp...
03/05/2002
6200704High capacity/high discharge rate rechargeable positive electrode
Disclosed is a positive electrode that has a low equivalent weight and high cell voltage and consequently a high specific energy, and a high discharge rate pulse capability. Also disclosed are methods for fabricating active-sulfur-based composite electrod...
03/13/2001
6187478Battery element containing efficiency improving additives
A battery element of a lead acid battery including a negative plate, a positive plate and a separator having a metal inhibiting additive that reduces the detrimental effects of at least one impurity on the negative plate....
02/13/2001
6124057Non-aqueous electrolyte secondary battery
The present invention provides a non-aqueous electrolyte secondary battery having an anode active material with a high capacity and excellent cycle characteristics. The active material comprises a salt of a metal or a semi-metal and a compound selected fr...
09/26/2000
6074782Lead storage battery containing a negative electrode active substance including a negative electrode additive
A lead storage battery comprising a positive electrode 11 and a negative electrode 12. The negative electrode 12 contains a negative electrode active substance to which a negative electrode additive is added. The negative electrode additive is a phenol.mu...
06/13/2000
5948567Battery paste dispersant
A battery paste for a lead oxide battery plate comprising lead oxide, sulfuric acid and a naphthalene sulfonic acid formaldehyde condensate, the condensate being water soluble and having a molecular weight of about 9,000 to 15,000; methods for preparing t...
09/07/1999
5672181Method for manufacturing a hardened lead storage battery electrode
A method for manufacturing a hardened lead storage battery electrode wherein fine, particulate solids, that are insoluble in lead, are incorporated into a lead matrix. The method includes the steps of incorporating solids, dissolved or suspended in an ele...
09/30/1997
5510213Method of preparing electrodes for lead-acid electrode battery
The invention provides an electrode for a lead-acid battery, formed in an essentially continuous process without the need for curing under controlled temperature and humidity conditions. This is accomplished by using a relatively high metallic lead conten...
04/23/1996
5507842Process for converting lead and lead oxides to barium metaplumbate
The present invention provides improved processes for forming anti-corrosion layers, particularly barium metaplumbate, on lead, lead alloy-, and lead oxide-containing substrates. The processes of the invention are used to form corrosion-resistant current ...
04/16/1996
5401596Hermetically sealed dry accumulator
The invention is related to hermetically sealed dry accumulators having significantly larger power output per units of mass in a proportionately smaller volume. The accumulator includes one electrode comprising copper, cadmium, zinc, nickel, or iron, and ...
03/28/1995
5368958Lithium anode with conductive for and anode tab for rechargeable lithium battery
Lithium based electrical cells having a new anode electrode construction are described. The cells have a sandwich construction of lithium sheet, conductive foil and lithium sheet, wherein the anode tab is welded directly onto the conductive foil not onto ...
11/29/1994
5368960Utilization efficiencies by using high sulfate starting materials
The battery system and process of the present invention enables the increase of the specific energy of the lead-acid battery by using new starting pastes which will allow significantly higher utilization efficiencies of the positive and negative pastes. T...
11/29/1994
5314766Lead-acid battery electrode and method of manufacture
Positive plates are prepared by forming partially oxidized tetrabasic lead sulfate (4 PbOn . PbSO4) having at least a part of the oxide (PbOn) portion in the form of alpha lead dioxide (.varies. - PbOn), and for...
05/24/1994
5302476High performance positive electrode for a lead-acid battery
An electrode suitable for use as a lead-acid battery plate is formed of a paste composition which enhances the performance of the plate. The paste composition includes a basic lead sulfate, a persulfate and water. The paste may also include lead oxide and...
04/12/1994
5252105Method of forming lead-acid battery electrode
In a preferred method, an electrode for a lead-acid battery is prepared in a new continuous process without the conventional curing step. The general procedure for preparing electrodes includes preparing a mixture (paste) comprising an active material pre...
10/12/1993
5045170Electrodies containing a conductive metal oxide
An electrode suitable for use as a lead-acid battery plate contains an inorganic metal oxide additive which enhances the formation of the plate. The additive is electrically conductive, stable in aqueous solutions of sulfuric acid, but does not participat...
09/03/1991
4985316Corrosion resistant fuel cell substrates
A porous substrate of a fuel cell electrode assembly is formed by producing a fibrous carbon precursor web by means of a conventional wet paper-making process. The precursor web is then dried and saturated with a wet resinous binder which will carbonize w...
01/15/1991
4548835Method for fabricating electrodes for use in lead storage batteries
A method for fabricating an electrode for use in lead storage batteries in which an aqueous emulsion of a silicone capable of forming an elastic, porous matrix on breaking of the emulsion, is contacted with a finely divided active electrode material at th...
10/22/1985
4415410Forming of tetrabasic lead sulfate battery electrodes
A method of forming battery plates or electrodes from tetrabasic lead sulfate includes the step of adding a lead peroxide such as lead dioxide in powdered form to the tetrabasic lead sulfate for making the paste to be applied to the plate or electrode sup...
11/15/1983
4381250Curing of tetrabasic lead pasted battery electrodes
A paste for coating electrodes for fabricating plates of lead acid batteries containing water, tetrabasic lead sulfate, and an effective amount of a carbonate material such as ammonium carbonate has been found useful in the curing of battery plates or ele...
04/26/1983
4338163Curing of tetrabasic lead pasted battery electrodes
A method of preparing battery electrodes from tetrabasic lead sulfate paste including the steps of adding a carbonate material to the paste, curing the electrodes in a humid atmosphere and forming the electrodes....
07/06/1982
4331516Curing of tetrabasic lead pasted battery electrodes
A process for the fabrication of lead acid batteries containing an acid electrolyte and negative electrodes and positive electrodes, including the steps of coating at least one said electrode with a paste containing tetrabasic lead sulfate and ammonium ca...
05/25/1982
4194060Electric accumulator and storage cell
An electric accumulator or storage cell whose positive and negative plates are composed of a multiplicity of thin lead plates or lead foils which are spaced apart from thin separators in a receptacle adapted to receive an electrolyte (dilute sulfuric acid...
03/18/1980
4176214Lithium-lead sulfate primary electrochemical cell
Disclosed is a primary electrochemical cell which employs a lithium metal anode, a lead sulfate cathode, and an electrolyte solution comprising a lithium salt in an organic solvent. The cell has an operating voltage and energy density sufficiently close t...
11/27/1979
3973991Light-weight lead-acid battery with laminated electrodes
A light-weight lead-acid battery has been prepared which contains a novel light weight electrode assembly. The electrode assembly comprises a laminated electrode having at least three plies, the center ply being a conductive sheet and the outer two plies ...
08/10/1976
 
Sign InRegister
Username  
Password   
forgot password?