This inventor holds 12 USPTO granted patents and 5 published patent applications and 2 EPO patents. Top assignees: Delaware Capital Formation, Inc., Graco Minnesota Inc., Q.e.d. Environmental Systems, Inc.. Active years: 1999-2018.
Company Filing History:
8 out of 659 
2 out of 710 
2 out of 46 
Years Active: 1999-2018
Title: Innovations of Douglas D Colby
Introduction
Douglas D Colby is an accomplished inventor based in Clarkston, MI (US). He holds a total of 12 patents, showcasing his expertise and creativity in the field of engineering and design. His inventions have contributed significantly to various industries, particularly in fluid control technologies.
Latest Patents
Among his latest patents is the "Removable Orifice Plate Device." This innovative device features an orifice plate with a circular portion and an aperture, designed to control fluid flow effectively. The device includes a tee body with internal structures that align with the orifice plate, allowing for precise fluid management. Another notable patent is the "Fine Control Gas Valve," which incorporates a tee with co-axially aligned runs and a rotatable hand operator. This valve enables users to adjust fluid flow with ease, enhancing operational efficiency.
Career Highlights
Throughout his career, Douglas has worked with reputable companies such as Delaware Capital Formation, Inc. and Graco Minnesota Inc. His experience in these organizations has allowed him to refine his skills and contribute to significant projects in the field of fluid dynamics.
Collaborations
Douglas has collaborated with talented individuals, including Henry Dykstra and Louie Xu Liu. These partnerships have fostered innovation and creativity, leading to the development of groundbreaking technologies.
Conclusion
Douglas D Colby is a notable inventor whose contributions to fluid control technologies have made a lasting impact. His patents reflect his dedication to innovation and problem-solving in engineering.