Location History:
- Arlington, TX (US) (2010 - 2011)
- Dallas, TX (US) (2018 - 2020)
Company Filing History:
4 out of 24 
3 out of 14 Years Active: 2010-2020
Title: David R. Prengaman: Innovator in Battery Technology
Introduction
David R. Prengaman is a notable inventor based in Dallas, TX (US). He has made significant contributions to the field of battery technology, particularly in the development of corrosion-resistant materials for lead-acid batteries. With a total of 4 patents to his name, Prengaman's work has had a lasting impact on the industry.
Latest Patents
Among his latest patents is a process for preparing a continuous cast lead-based alloy strip for use in the manufacture of a battery grid for lead-acid batteries. This innovative process involves mechanically deforming a continuous cast lead-based alloy strip at a deformation temperature ranging from about 15 to about 150° C. The aim is to reduce the thickness of the strip from a range of about 0.6 to about 2 mm to a final thickness between about 0.4 to about 1.5 mm, achieving a reduction of about 10 to about 50%. The lead-based alloy used in this process comprises lead and silver, and is essentially free of calcium, with silver concentration ranging from about 0.003 to about 0.015 weight percent.
Another significant patent involves a battery grid made from a continuous cast and mechanically deformed lead-based alloy. This alloy also consists of lead and silver, with a predominant equiaxed grain structure featuring grain sizes between about 0.1 to about 5 microns. Additional alloy constituents include bismuth and tin, which enhance the performance and durability of the battery grid.
Career Highlights
David R. Prengaman has worked with several prominent companies in the battery industry, including RSR Technologies, Inc. and Northstar Battery Company, LLC. His experience in these organizations has allowed him to refine his expertise in battery technology and contribute to innovative solutions in the field.
Collaborations
Throughout his career, Prengaman has collaborated with notable professionals such as Frank Albert Fleming and Timothy W. Ellis. These collaborations have further enriched his work and expanded the impact of his inventions.
Conclusion
David R. Prengaman is a distinguished inventor whose work in battery technology continues to influence the industry. His innovative patents and collaborations reflect his commitment to advancing battery performance and sustainability.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.