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| Number | Title | Issue Date |
| 6802917 | Perforated current collectors for storage batteries and electrochemical cells, having improved resistance to corrosion A process for enhancing chemical stability and corrosion resistance is described for perforated current collectors made by continuous production processes for use in electrochemical cells, including storage batteries such as lead-acid batteries. The process relies o... | 10/12/2004 |
| 6797403 | Continuous extruded lead alloy strip for battery electrodes A method of producing lead alloy strip for fabrication of positive and negative electrodes of a lead-acid battery by extruding a lead alloy at elevated temperature to produce a lead alloy strip having a desired profile and rapidly cooling the extruded strip to acqui... | 09/28/2004 |
| 6749950 | Expanded grid Provided for herein is a method of making an expanded metal grid, comprising: compression rolling a metal strip at a reduction ratio from about 1.25 to 1, to about 25 to 1 to produce a rolled strip, heating the rolled strip at a temperature of at least about 125° C... | 06/15/2004 |
| 6630251 | Leach-resistant solder alloys for silver-based thick-film conductors A tin-lead solder alloy containing copper and/or nickel and optionally silver, palladium, platinum and/or gold as its alloying constituents. The solder alloy consists essentially of, by weight, about 5% to about 70% tin, up to about 4% silver palladium, p... | 10/07/2003 |
| 6592686 | Lead and lead alloys with enhanced creep and/or intergranular corrosion resistance, especially for lead-acid batteries and electrodes therefor Recrystallized lead and lead alloy positive electrodes for lead acid batteries having an increased percentage of special grain boundaries in the microstructure, preferably to at least 50%, which have been provided by a process comprising steps of working ... | 07/15/2003 |
| 6531039 | Anode for plating a semiconductor wafer An anode for use in electroplating semiconductor wafers, comprising a metal plate formed from a generally continuous casting process that is essentially free of voids or cracks, the casting being thermo-mechanically worked until the anode has an average g... | 03/11/2003 |
| 6372063 | Process for manufacturing metallic component and such metallic component The process for manufacturing a metallic component, such as a wheel part for the rolling system of a vehicle, which includes, in an initial stage, forming the component of a metallic material in a semi-solid state and having a thixotropic structure, and i... | 04/16/2002 |
| 6342110 | Lead and lead alloys with enhanced creep and/or intergranular corrosion resistance, especially for lead-acid batteries and electrodes therefor Recrystallized lead and lead alloy positive electrodes for lead acid batteries having an increased percentage of special grain boundaries in the microstructure, preferably to at least 50%, which have been provided by a process comprising steps of working ... | 01/29/2002 |
| 6337145 | Multilayer material for sliding elements and process for the production thereof A process for the production of sliding elements in which an overlay of lead-tin-copper is applied by electroplating to the prefabricated semi-finished product, and in which a ternary, fluoroborate-free electroplating bath is used without brighteners and ... | 01/08/2002 |
| 6224723 | Electrowinning anodes which rapidly produce a protective oxide coating An anode for use in zinc electrowinning is described. The anode is made of a lead-silver alloy which has been cast as a billet rolled and subjected to heat treatment either during or after rolling. The temperature of treatment is high enough to cause recr... | 05/01/2001 |
| 6096145 | Method of making clad materials using lead alloys and composite strips made by such method Lead alloy strip material (4, 6, 8) is roll bonded on one or both opposite face surfaces of a core strip material (2). The core material can be commercially pure titanium, austenitic stainless steel, low carbon steel, copper, aluminum, alloys thereof or o... | 08/01/2000 |
| 6086691 | Metallurgical process for manufacturing electrowinning lead alloy electrodes Lead and lead-alloy anodes for electrowinning metals such as zinc, copper, lead, tin, nickel and manganese from sulfuric acid solutions, whereby the electrodes are processed by a repetitive sequence of cold deformation and recrystallization heat treatment... | 07/11/2000 |
| 5464487 | Method of making a hardened bullet A method of a hardening a solid metal object consisting essentially of lead which has been swaged cold wrought, such as a bullet, and a hardened swaged wrought bullet are disclosed in which the bullet is formed from a lead or lead alloy blank by swaging t... | 11/07/1995 |
| 4753688 | Process for strengthening lead-antimony alloys A process is provided for increasing the strength of antimony-lead alloys by specially treating an alloy which contains an effective amount of arsenic in the alloy, the process comprising working the alloy, rapidly heat treating the alloy, which includes ... | 06/28/1988 |
| 4629516 | Process for strengthening lead-antimony alloys A process is provided for increasing the strength of antimony-lead alloys by specially treating an alloy which contains an effective amount of arsenic in the alloy, the process comprising working the alloy, rapidly heat treating the alloy, which includes ... | 12/16/1986 |
| 4332629 | Method of making extended strip of lead-antimony alloys for battery electrodes A method of making an extruded strip less than 1.27 mms thick of lead antimony alloy containing 1 to 2% by weight antimony, the strip having an aspect ratio in excess of 10:1 comprises supplying the alloy at a temperature of 200° C. to 280° C. to an ext... | 06/01/1982 |
| 3959016 | Method for manufacturing lead grid plates for batteries A method for manufacturing a lead grid plate for batteries comprising the first process of preparing a rolled lead alloy plate measuring 0.5 to 1 mm in thickness; the second process of press punching the rolled lead alloy plate by means of a metal mold to... | 05/25/1976 |
| 3953244 | Method of fabricating stable wrought lead-calcium-tin alloys by means of cold working Stable wrought lead-calcium-tin alloys can be prepared by casting an alloy of lead having a calcium content of from about 0.02% or 0.03% to about 0.1% by weight and having a tin content such that the tin to calcium weight ratio or relative tin content is ... | 04/27/1976 |
