Location History:
- Pearland, TX (US) (1989 - 2004)
- Basiglio, IT (2006 - 2009)
Company Filing History:
13 out of 226 
7 out of 10,170 
1 out of 161 Years Active: 1989-2009
Title: The Innovative Contributions of Dwayne D. Leismer
Introduction
Dwayne D. Leismer, an accomplished inventor based in Pearland, Texas, has made significant strides in the field of engineering, particularly with his impressive portfolio of 21 patents. His expertise primarily lies in developing innovative solutions for controlling fluid flow in various applications, showcasing his commitment to advancing technology in the industry.
Latest Patents
Among Leismer's most recent innovations is the "Subsurface Annular Safety Barrier." This technology is designed to control fluid flow within the tubing-casing annulus of an annular flow well. The barrier can be strategically positioned near the top of a geological formation to effectively block fluid flow when casing integrity is compromised. One embodiment of this design includes a packer and a valve that can be closed without the need for mechanical manipulation of the tubing, enhancing safety and efficiency. Another version of the "Subsurface Annular Safety Barrier" features a tubing assembly within a wellbore casing that creates a casing-tubing annulus. This allows fluid to flow to and from a subterranean formation. The annular barrier is designed to be operationally activatable, enabling it to shift from an open to a closed position without requiring any mechanical adjustments of the pipe string, thereby preventing unwanted fluid flow.
Career Highlights
Leismer’s career includes pivotal roles at notable companies such as Camco International, Inc. and Schlumberger Technology Corporation. His work in these esteemed organizations has allowed him to hone his skills and contribute to advancements in petroleum engineering and fluid management technologies, further solidifying his reputation as a leading innovator in the field.
Collaborations
Throughout his career, Leismer has collaborated with distinguished professionals in the industry, including Ronald E. Pringle and Clay W. Milligan, Jr. These partnerships have likely enhanced his work, leading to the development of groundbreaking technologies and solutions that address complex challenges in fluid dynamics and safety in well operations.
Conclusion
Dwayne D. Leismer stands out as a dynamic inventor whose contributions to patenting innovative technologies have significantly impacted the engineering landscape. His latest patents not only demonstrate his creativity and technical proficiency but also emphasize his dedication to improving safety and efficiency in fluid management systems. As he continues to push the boundaries of invention, Leismer's work will undoubtedly inspire future innovations in the industry.
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.