William A Pledger

This inventor holds 53 USPTO granted patents, plus 7 CIPO patents and 4 EPO patents, primarily in Hydrogen Separation (CPC class B01D). Top assignees: Idatech, LLC, Dcns Sa, H2 Powertech, LLC. Active years: 1999-2025.

USPTO Granted Patents = 53

% Patents Active = 67.9

CIPO Patents = 7 (Patent Applications = 1)

EPO Patents = 4

Average Co-Inventor Count = 2.8

ph-index = 29

Forward Citations = 2,531(Granted Patents)

Forward Citations (Not Self Cited) = 2,232(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Sisters, OR (US) (1999 - 2010)
Bend, OR (US) (2006 - 2024)

Company Filing History:

Northwest Power Systems, LLC

patent

Years Active: 1999-2025

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Areas of Expertise:

Hydrogen Purification

Fuel Processing

Membrane Technology

Hydrogen Separation

Steam Reforming

Fuel Cell Systems

Thermal Energy Recovery

Contaminant Detection

Feedstock Delivery

Hydrogen-Selective Membranes

Hydrogen-Processing Assemblies

Integrated Fuel Cell

53 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12275638 - Systems and methods for increasing the hydrogen permeance of hydrogen separation membranes in situ (2025-04-14),

2. 11999621 - Systems and methods for increasing the hydrogen permeance of hydrogen-separation membranes in situ (2024-06-04),

3. 11618676 - Systems and methods for increasing the hydrogen permeance of hydrogen-separation membranes in situ (2023-04-04),

4. 8696772 - Steam reforming fuel processor, burner assembly, and methods of operating the same (2014-04-15),

5. 8673510 - Systems and methods for maintaining hydrogen-selective membranes during periods of inactivity (2014-03-18),

6. 8636828 - Hydrogen purification membranes, components and fuel processing systems containing the same (2014-01-28),

7. 8257466 - Hydrogen purification membranes, components and fuel processing systems containing the same (2012-09-04),

8. 8157900 - Hydrogen-processing assemblies and hydrogen-producing systems and fuel cell systems including the same (2012-04-17),

9. 8057575 - Hydrogen purification membranes, components and fuel processing systems containing the same (2011-11-15),

10. 7981172 - Steam reforming fuel processor, burner assembly, and methods of operating the same (2011-07-19),

11. 7972420 - Hydrogen-processing assemblies and hydrogen-producing systems and fuel cell systems including the same (2011-07-05),

12. 7939211 - System and method for controlling the operation of a fuel processing system (2011-05-10),

13. 7828864 - Steam reforming fuel processor, burner assembly, and methods of operating the same (2010-11-09),

14. 7819955 - Hydrogen purification membranes, components and fuel processing systems containing the same (2010-10-26),

15. 7789941 - Hydrogen purification membranes, components and fuel processing systems containing the same (2010-09-07),

Title: The Innovative Journey of William A Pledger

Introduction: William A Pledger, a talented inventor hailing from Bend, Oregon, has made significant contributions to the world of innovation through his groundbreaking work in various fields.

Latest Patents: William A Pledger's latest patents showcase his commitment to pushing the boundaries of technology and creativity, with a focus on improving everyday life through his inventions.

Career Highlights: Throughout his illustrious career, William A Pledger has been recognized for his ingenuity and forward-thinking approach to problem-solving. His innovative solutions have garnered acclaim in the industry and beyond.

Collaborations: William A Pledger has collaborated with leading experts and organizations in the field, leveraging his expertise to bring revolutionary ideas to life. His partnerships have resulted in the development of cutting-edge technologies that have reshaped industries.

Conclusion: In conclusion, William A Pledger stands as a beacon of innovation, inspiring others to think outside the box and pursue their creative visions. His remarkable contributions have left an indelible mark on the world of inventions, setting a high standard for future innovators to follow.