Location History:
- Burnsville, MN (US) (1977 - 1979)
- Eagan, MN (US) (1982 - 1997)
- Aurora, IL (US) (1997 - 2002)
Company Filing History:
8 out of 53 
5 out of 20 
5 out of 585 Years Active: 1977-2002
Title: **Purushothama Rao: Innovator in Lead-Acid Battery Technology**
Introduction
Purushothama Rao, based in Eagan, MN, has made significant contributions to the field of energy storage through his innovative work in lead-acid battery technology. With a total of 23 patents to his name, Rao has been at the forefront of developing new materials and methods that enhance the performance and longevity of lead-acid batteries.
Latest Patents
Rao's recent patents showcase his commitment to advancing battery technology. One notable patent describes a sealed lead-acid cell that employs a separator made from modified plastic microfibers. This separator features a low contact angle with sulfuric acid electrolyte, fine-tuned porosity, and optimized pore diameters, all of which contribute to improved capacity and efficiency. Another patent outlines a method for making positive grids for lead-acid batteries from calcium-tin-silver lead-based alloys. This innovative technique includes casting and rolling the alloy strip at controlled temperatures, followed by quenching and heat aging to enhance the grid's mechanical and corrosion resistance.
Career Highlights
Throughout his career, Purushothama Rao has worked with prominent companies in the field, including GNB Technologies, Inc. and GNB Incorporated. His expertise in battery technology has allowed him to contribute to major advancements within these organizations, positioning them as key players in the energy storage market.
Collaborations
Rao has collaborated with several notable professionals, including Thomas F. Uhlemann and George W. Mao. These partnerships have facilitated the sharing of ideas and insights, further enhancing the innovation ecosystem surrounding lead-acid battery development.
Conclusion
With a remarkable portfolio of patents and a successful career in battery technology, Purushothama Rao has established himself as a leading inventor in the field. His contributions continue to shape the future of energy storage solutions, proving that innovative thinking and collaborative efforts are essential for progress in technology.
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.