Location History:
- La Jolla, CA (US) (1997)
- Roscoe, IL (US) (2000 - 2002)
- Appleton, WI (US) (2001 - 2010)
- Orinda, CA (US) (1990 - 2022)
Company Filing History:
8 out of 12 
7 out of 5,272 
5 out of 6 
Years Active: 1990-2022
Areas of Expertise:
Title: Innovations in Recycling: The Contributions of Robert Lewis Clarke
Introduction: Robert Lewis Clarke, based in Orinda, CA, is a prolific inventor with an impressive portfolio of 42 patents. His groundbreaking work in the field of recycling, particularly concerning lead acid batteries, showcases his commitment to sustainable innovation and environmental preservation.
Latest Patents: Among Clarke's notable patents are two key inventions that significantly enhance the recycling processes for lead acid batteries. The first patent, titled "Devices and Method for Smelterless Recycling of Lead Acid Batteries," outlines a process that recovers lead from battery scrap without the need for smelting. This innovative method utilizes an aqueous electroprocessing solvent and electro-refining to achieve clean grid lead and high-purity lead recovery. Notably, the process operates continuously, allowing for the recycling of spent electroprocessing solvent back into the recovery operation.
The second patent, "Systems and Methods for Continuous Alkaline Lead Acid Battery Recycling," highlights an efficient recycling solution that employs alkaline desulfurization followed by the formation of plumbite, which is electrolytically converted to pure lead. This process not only recycles lead from lead paste but also recovers remaining lead dioxide to produce lead oxide for reintegration into the recovery system. Additionally, the sulfate generated is recovered as sodium sulfate.
Career Highlights: Throughout his career, Robert Lewis Clarke has made significant strides in the recycling industry, particularly during his tenure at Aqua Metals Inc. His expertise in developing innovative recycling methods has positioned him as a leader in the sector, contributing to enhanced sustainability practices and reduced environmental impact.
Collaborations: Clarke's work has been enriched through collaborations with esteemed colleagues in the field, including Samaresh Mohanta and Stephen Harrison. Their combined efforts have advanced the development of innovative technologies aimed at improving battery recycling processes.
Conclusion: Robert Lewis Clarke's contributions to the recycling of lead acid batteries represent a pivotal shift towards more sustainable practices in the industry. His extensive patent portfolio and collaborative endeavors illustrate his dedication to innovation and environmental responsibility. Through his inventions, Clarke not only paves the way for more efficient recycling methods but also emphasizes the importance of sustainable development in technology.