Perth, Australia

David John Longman

USPTO Granted Patents = 3 

Average Co-Inventor Count = 2.8

ph-index = 3

Forward Citations = 70(Granted Patents)


Location History:

  • City Beach, AU (1999 - 2006)
  • Perth, AU (2007)

Company Filing History:


Years Active: 1999-2007

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3 patents (USPTO):Explore Patents

Title: The Innovative Journey of David John Longman

Introduction: David John Longman, a distinguished inventor based in Perth, Australia, has made significant contributions to the field of engineering, particularly in the realm of internal combustion engines. With a total of three patents to his name, Longman's work exemplifies the intersection of innovation and practicality in modern engineering.

Latest Patents: Among his notable inventions, two recent patents stand out. The first is for a fuel delivery injector designed for internal combustion engines. This innovative injector includes a unique combination of injection and ignition mechanisms. Its design features a valve structure with a movable valve member that operates seamlessly with an actuating assembly, primarily comprising an electromagnetic device that enhances the efficiency of fuel delivery.

The second patent revolves around fuel injector nozzles that meticulously control the delivery of fluids in a spray form. This invention highlights a clever design where a valve member and nozzle port interact to either allow or prevent fluid passage. It includes a flow control body optimized to enhance fluid spray patterns while minimizing heat transfer, further showcasing Longman's commitment to enhancing engine efficiency.

Career Highlights: David John Longman is currently associated with Orbital Engine Company (Australia) Pty Limited, where he has been pivotal in advancing engine technology. His inventive spirit and engineering prowess have not only benefitted his company but also contributed significantly to the automotive industry's ongoing evolution towards efficiency and performance.

Collaborations: Throughout his career, Longman has worked alongside talented colleagues, including Michael Leonard McKay and James Allen Kimmel. These collaborations have fostered an environment of innovation, enabling the team to push boundaries and develop cutting-edge technologies in the automotive sector.

Conclusion: David John Longman's contributions as an inventor are vital to the advancement of internal combustion engine technology. His patents reflect a deep understanding of engineering principles and a dedication to innovation. As he continues his work at Orbital Engine Company, the impact of his inventions will surely resonate in the industry for years to come.

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