Kempton, PA, United States of America

Mark Julian Roberts

USPTO Granted Patents = 55 

 

 

Average Co-Inventor Count = 2.2

ph-index = 15

Forward Citations = 715(Granted Patents)

Forward Citations (Not Self Cited) = 668(Oct 12, 2025)


Location History:

  • Mesa, AZ (US) (1989 - 1991)
  • Bartlesville, OK (US) (1993)
  • Seattle, WA (US) (1995)
  • New Tripoli, PA (US) (2000 - 2001)
  • Kempton, PA (US) (2001 - 2023)
  • Whitehall, PA (US) (2022 - 2024)

Company Filing History:


Years Active: 1989-2025

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55 patents (USPTO):Explore Patents

Title: Innovations and Achievements of Mark Julian Roberts

Introduction

Mark Julian Roberts, an accomplished inventor based in Kempton, PA, has made significant contributions to the field of liquefied natural gas (LNG) production. With a remarkable portfolio of 48 patents, Roberts continues to develop innovative methods and systems that enhance the efficiency and effectiveness of LNG production.

Latest Patents

Among his latest patents are the “Reverse Brayton LNG production process” and a method for “LNG production with nitrogen removal.” The Reverse Brayton LNG production process describes innovative methods for producing an LNG product by cooling and liquefying a natural gas stream through indirect heat exchange with a gaseous refrigerant. This system leverages a refrigerant circulating in a reverse Brayton cycle to optimize the production process. The design includes a sophisticated system of coil-wound heat exchangers, which operate at varying pressures to facilitate the efficient warming of the refrigerant and separation of the LNG product.

The LNG production with nitrogen removal patent outlines a method and system for liquefying a natural gas feed stream while effectively removing nitrogen. This advancement assists in purifying the LNG and enhancing its market value.

Career Highlights

Mark Julian Roberts has spent a notable portion of his career at Air Products and Chemicals, Inc., where he has contributed to various pioneering projects. His work has focused heavily on improving methods for liquefied natural gas production, thereby playing a critical role in the energy sector.

Collaborations

Throughout his career, Roberts has collaborated with talented individuals such as Gowri Krishnamurthy and Adam Adrian Brostow. These partnerships have led to the development of significant innovations within the LNG field and have fostered a collaborative spirit that enhances the research and development process.

Conclusion

With a strong foundation in innovative engineering and a commitment to advancing the LNG industry, Mark Julian Roberts exemplifies the spirit of invention. His extensive patent portfolio and contributions to various companies, particularly Air Products and Chemicals, Inc., underscore his role as a leading figure in the field of liquefied natural gas production. As he continues to innovate, the impact of his work is likely to resonate within the industry for years to come.

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