Company Filing History:
1 out of 32 
1 out of 2 
1 out of 63 Years Active: 1977-1982
Title: The Innovative Contributions of Joseph C Duddy
Introduction
Joseph C Duddy is a notable inventor based in Trevose, Pennsylvania, recognized for his significant contributions to battery technology. With a total of three patents to his name, Duddy has developed methods that enhance the performance and efficiency of lead-acid storage batteries. His work has had a lasting impact on the industry, showcasing his innovative spirit and technical expertise.
Latest Patents
Duddy's latest patents include a method of preparing a battery paste containing fibrous materials. This method involves mixing a water dispersion of polyfluoroethylene with lead material, followed by the addition of an aqueous solution of sulfuric acid. The resulting paste exhibits improved characteristics, allowing for a substantial reduction in plate weights and density, as well as minimizing the loss of active material due to plate shedding. The savings in active material can range from 10 to 30% compared to conventional lead-acid pastes, all without compromising battery performance.
Another significant patent is for a method of making storage battery grids from a lead-tin-zinc alloy. This unique alloy, which includes small additions of zinc and tin, is used to create grids for lead-acid cells. Although the alloy is initially softer than desired, it can be hardened through mechanical working, achieving strength and stiffness comparable to other low alloy lead materials currently in use.
Career Highlights
Throughout his career, Duddy has worked with prominent companies in the battery industry, including Exide Corporation and Rayovac Management Corporation. His experience in these organizations has allowed him to refine his skills and contribute to advancements in battery technology.
Collaborations
Duddy has collaborated with notable individuals in the field, including Edward R Hein and Francis P Malaspina. These partnerships have further enriched his work and contributed to the development of innovative solutions in battery technology.
Conclusion
Joseph C Duddy's contributions to battery technology through his innovative patents have significantly advanced the field. His methods for improving battery paste and grid materials demonstrate his commitment to enhancing performance and efficiency in lead-acid storage batteries. His work continues to influence the industry and inspire future innovations.