Location History:
- Houston, TX (US) (1989 - 1990)
- Woodlands, TX (US) (1999 - 2002)
- Spring, TX (US) (2014 - 2016)
- The Woodlands, CT (US) (2016)
- The Woodlands, TX (US) (1996 - 2020)
Company Filing History:
13 out of 5,728 
11 out of 266 
4 out of 1,388 
Years Active: 1989-2020
Title: Innovations and Inventions of Douglas Julius Lehr
Introduction
Douglas Julius Lehr, an accomplished inventor based in The Woodlands, TX, holds an impressive portfolio of 29 patents. His work primarily revolves around enhancing tools and systems in the oil and gas industry, making significant contributions to the field through innovative designs and applications.
Latest Patents
Among his latest patents is the Slow Response Time Tool, a sophisticated mechanism featuring a biasing arrangement and a piston in operable communication with a chamber. This tool is designed for precise control in various applications, utilizing a retardation arrangement that defines a helical pathway in fluid communication with the chamber.
Another notable invention is the Expandable Junk Mill. This innovative borehole mill incorporates blades that extend radially while moving along an inclined dovetail when weight is applied to a mandrel. This mechanism allows the blades to retract while running in and to expand when set down weight is applied. Upon lifting, the spring mechanism retracts the blades, allowing for efficient operations in borehole environments.
Career Highlights
Douglas has an impressive career trajectory, having collaborated with leading companies in the industry. He worked at Baker Hughes Corporation and BJ Services Company, where he leveraged his expertise to develop groundbreaking tools and solutions.
Collaborations
Throughout his career, Douglas has collaborated with notable professionals such as Gabriel Antoniu Slup and Gregory Lee Hern. These partnerships have contributed to the successful development of various patented innovations, reflecting the importance of teamwork in the invention process.
Conclusion
Douglas Julius Lehr's contributions to the field of innovation through his patents and collaborative efforts underscore the vital role of inventors in enhancing technology. His inventions, particularly in the oil and gas industry, demonstrate a blend of creativity and technical expertise that continues to drive advancements in engineering solutions.
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.