Location History:
- Palatine, IL (US) (1990)
- Arlington Heights, IL (US) (1992 - 1999)
- Yardley, PA (US) (1999 - 2022)
Company Filing History:
7 out of 1,391 
4 out of 217 
2 out of 1,961 
Years Active: 1990-2022
Title: David B. Mitchell: Innovator in Wastewater Treatment
Introduction
David B. Mitchell is an accomplished inventor based in Arlington Heights, IL. With a remarkable portfolio of 14 patents, he has significantly contributed to the field of wastewater treatment through his innovative approaches and methods. His latest patents, which focus on enhancing the processing of sludge, exemplify his commitment to improving environmental technologies.
Latest Patents
One of David's most recent patents is titled "Method for Processing Sludge." This invention outlines a procedure for treating wastewater or sludge, which involves shearing sludge with a high viscosity ranging from about 3,000 cP to about 15,000 cP. The result is a treated sludge that achieves a second viscosity of less than 3,000 cP, maintaining this lower viscosity for a specified duration. Additionally, the sludge can be thickened through dewatering, and a chemical agent may be incorporated at various stages of the shearing process for enhanced effectiveness.
Another significant patent is the "Activated Sludge Process in Wastewater Treatment." This invention describes methods for treating heavily contaminated wastewater by utilizing waste activated sludge as an adsorbent, thus offering a sustainable solution to wastewater management.
Career Highlights
David has made notable contributions while working with reputable companies such as W.R. Grace & Co. and BetzDearborn, Inc. His experience in these organizations has aided his development as an inventor, allowing him to refine his innovative ideas and apply them effectively in real-world scenarios.
Collaborations
Throughout his career, David has collaborated with esteemed professionals such as Thomas Peter Curran and Ralph L. Minnis. These partnerships have further enriched his inventiveness and provided a collaborative platform to enhance wastewater treatment technologies.
Conclusion
David B. Mitchell stands out as a leading innovator in the wastewater treatment sector, primarily focusing on enhancing the processes associated with sludge management. His extensive patent portfolio underscores his dedication to finding efficient and sustainable solutions for environmental challenges. Through his collaborations and career milestones, David continues to impact the industry positively, paving the way for future advancements in wastewater treatment technologies.
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.