Mercer Island, WA, United States of America

Roger N Johnson

This inventor holds 14 USPTO granted patents and 3 published patent applications and 1 EPO patent. Top assignees: Eidon, LLC, Radiant Optics, Inc., Other. Active years: 1988-2026.

USPTO Granted Patents = 14 (Patent Applications = 3)

% Patents Active = 78.6

EPO Patents = 1 (Patent Applications = 5)

Average Co-Inventor Count = 1.1

ph-index = 4

Forward Citations = 68(Granted Patents)

Company Filing History:

1 out of 834,411

Other

patents

Years Active: 1988-2026

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12521671 - Carbon dioxide absorption with liquid (2026-01-13),

2. 12366371 - Chiller system (2025-07-22),

3. 11260694 - Segmented inner tube (2022-03-01),

4. 11148886 - System and method for peristaltic transport of material (2021-10-19),

5. 10327604 - Dry urinal apparatus (2019-06-25),

6. 9273827 - Counterforce safety system (2016-03-01),

7. 7278429 - Surface energy assisted fluid transport system (2007-10-09),

8. 7204252 - Surface energy assisted fluid transport system (2007-04-17),

9. 7116900 - Radiant energy source systems, devices, and methods capturing, controlling, or recycling gas flows (2006-10-03),

10. 6932079 - Radiant energy source systems, devices, and methods capturing, controlling, or recycling gas flows (2005-08-23),

11. 4938624 - Blind edgewise connector (1990-07-03),

12. 4896656 - Lens-like radiant energy transmission control means (1990-01-30),

13. 4841947 - Lens-like radiant energy transmission control means (1989-06-27),

14. 4780019 - Blind edgewise connector (1988-10-25),

Title: Roger N Johnson: Innovator in Chiller Systems and Airflow Technology

Introduction

Roger N Johnson is a notable inventor based in Mercer Island, WA (US). He has made significant contributions to the field of refrigeration and airflow technology, holding a total of 14 patents. His innovative designs have paved the way for advancements in chiller systems and air management.

Latest Patents

Among his latest patents is a sophisticated chiller system. This system includes a refrigeration fluid, an evaporative fluid, and an evaporator that facilitates the evaporation of a portion of the refrigeration fluid. Additionally, it features an output heat exchanger that enhances the temperature of adjacent refrigeration fluid by transferring heat from the surrounding environment. The system also incorporates a separator that effectively separates the evaporative fluid from the evaporated refrigeration fluid, allowing for efficient recycling back to the evaporator.

Another significant patent is the segmented inner tube. This invention comprises a unitary tube divided into multiple chambers, interconnected to control airflow between them. A valve is integrated into the unitary tube, enabling the introduction of air into the chambers through the interconnections, thereby optimizing airflow management.

Career Highlights

Roger has worked with several companies throughout his career, including Eidon, LLC and Radiant Optics, Inc. His experience in these organizations has contributed to his expertise in developing innovative technologies.

Collaborations

Roger has collaborated with Douglas L Johnson, further enhancing his work in the field of inventions and patents.

Conclusion

Roger N Johnson's contributions to the fields of refrigeration and airflow technology are noteworthy. His innovative patents reflect his commitment to advancing these industries. His work continues to influence the development of efficient systems that benefit various applications.