This inventor holds 6 USPTO granted patents. Top assignees: Quest Technologies, Inc., Biologix Inc., Natco. Active years: 1990-1993.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 1990-1993
Title: The Innovative Mind of Douglas J Littlejohn
Introduction
Douglas J Littlejohn, an accomplished inventor based in Sunnyvale, CA, has made significant contributions to the field of technology with a total of six awarded patents. His work has focused predominantly on advancing motor and motion control systems, as well as enhancing user experience in specialized vehicles.
Latest Patents
Among his notable inventions is a patent for a "Control System Network Structure." This innovation integrates network communication principles into motor and motion control systems, organizing them into distinct interlinked modules, including motor drive control, user command, and master control modules. Connectivity is established through a straightforward hardware bus like the RS-485, with time division protocol facilitating communication among the modules.
Another significant patent is the "Electronic Control System for Stair Climbing Vehicle," which focuses on improving assistive technologies for users such as wheelchair occupants. This electronic system employs front and back sensors to detect stairways or slopes, evaluating the incline's safety. The vehicle automatically adjusts the user's seating position to maintain an upright posture while navigating stairs, ensuring safety and comfort. It also features customizable operational parameters via removable memory, tailoring the experience for individual users.
Career Highlights
Douglas J Littlejohn has worked with several prominent companies, including Quest Technologies, Inc. and Biologix Inc., where he has honed his innovative skills and contributed to the development of cutting-edge technologies.
Collaborations
Throughout his career, Littlejohn has collaborated with esteemed colleagues such as Baxter R Watkins and Richard L Fellows. These partnerships have further enriched his inventions, blending expertise to advance technology for various applications.
Conclusion
Douglas J Littlejohn continues to be a formidable force in the field of innovation, with his patents reflecting his commitment to enhancing control systems and improving user accessibility. His work exemplifies creativity and the relentless pursuit of better solutions in technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile