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David Prengaman, 53937 Bridges Dr, Arlington, TX 76012

Known as:
Raymond D Prengaman Raymond David Prengaman Raymond J Prengaman Rae L Prengaman Rd Prengaman David N Ray Prengaman
Related to:
Barron H Harvey 78

David Prengaman Phones & Addresses

937 Bridges Dr, Arlington, TX 76012    817-2754337   

414 Royal Colonnade, Arlington, TX 76011   

2207 Ravinia Cir, Arlington, TX 76012   

Beverly Hills, CA   

Los Angeles, CA   

Berlin, MD   

Falls Church, VA   

Sagle, ID   

Gunnison, CO   

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Publications & IP owners

Us Patents

Lead-Tin-Silver-Bismuth Containing Alloy For Positive Grid Of Lead Acid Batteries

US Patent:
7923155, Apr 12, 2011
Filed:
Mar 17, 2008
Appl. No.:
12/049700
Inventors:
David R. Prengaman - Arlington TX, US
Frank A. Fleming - Ozark MO, US
Assignee:
Northstar Battery Company, LLC - Springfield MO
RSR Technologies - Dallas TX
International Classification:
H01M 4/68
C22C 11/00
C22C 11/06
US Classification:
429245, 429233, 420565, 420566, 420570
Abstract:
A lead-acid battery grid made from a lead-based alloy containing, in addition to lead, tin at a concentration that is at least about 0. 500%, silver at a concentration that is greater than 0. 006%, and bismuth at a concentration that is at least about 0. 005%, and, if calcium is present in the lead-based alloy, the calcium is at concentration that is no greater than about 0. 010%.

Alloy And Anode For Use In The Electrowinning Of Metals

US Patent:
2007019, Aug 23, 2007
Filed:
Feb 23, 2006
Appl. No.:
11/361146
Inventors:
David Prengaman - Arlington TX, US
Andreas Siegmund - Lantana TX, US
International Classification:
C22C 11/06
US Classification:
204293000, 420565000
Abstract:
A lead calcium tin alloy to which cobalt has been added is described. The alloy is useful in the formation of anodes to be used in electrowinning cells. Electrowinning cells containing the cobalt alloys are particularly suited for electrowinning metals, such as copper, from sulfuric acid electrolytes. The cobalt-containing anodes improve the efficiency of oxygen evolution at the anode during electrowinning and reduce corrosion of the anode.

Corrosion Resistant Positive Grid For Lead-Acid Batteries

US Patent:
2018024, Aug 30, 2018
Filed:
May 1, 2018
Appl. No.:
15/968509
Inventors:
- Springfield MO, US
- Dallas TX, US
David R. Prengaman - Dallas TX, US
International Classification:
H01M 4/14
H01M 4/22
H01M 4/72
H01M 4/74
Abstract:
A process of preparing a continuous cast lead-based alloy strip for use in the manufacture of a battery grid of a lead-acid battery, the process comprising mechanically deforming, at a deformation temperature in a range of about 15 to about 150 C., a continuous cast lead-based alloy strip having a thickness of tthat is in a range that is from about 0.6 to about 2 mm to reduce the thickness of the strip to a thickness of tthat is in a range that is from about 0.4 to about 1.5 mm such that the reduction in thickness is in a range of about 10 to about 50%, wherein the lead-based alloy comprises lead and silver and is essentially free of calcium, and wherein the silver is at a concentration that is in a range of about 0.003 to about 0.015 weight percent.

Corrosion Resistant Positive Grid For Lead-Acid Batteries

US Patent:
2015012, May 7, 2015
Filed:
Nov 5, 2014
Appl. No.:
14/533325
Inventors:
- Springfield MO, US
- Dallas TX, US
David R. Prengaman - Dallas TX, US
International Classification:
H01M 4/14
H01M 4/22
US Classification:
429219, 29 2
Abstract:
A battery grid comprising a continuous cast and mechanically deformed lead-based alloy that comprises lead and silver and is essentially free of calcium, wherein the silver is at a concentration that is in a range of about 0.003 to about 0.015 weight percent, and has a predominant equiaxed grain structure that comprises grain sizes that are in a range of about 0.1 to about 5 microns. Other alloy constituents include bismuth at a concentration that is in a range of about 0.003 to about 0.002 weight percent and tin at a concentration that is in a range of about 0.2 to about 1.8 weight percent. A process for making strip of said alloy for use in manufacturing said grid. A battery comprising said grid.

Possible Relatives

Richard J Prengaman  David Last  David W Johnson  David Stamps  David L Stanard  David M Stanbery  David A Stanchfield  David J Stanciel  David Stancil  David A Stanczak 

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