Douglasville, GA, United States of America

David Ketema Johnson

This inventor holds 9 USPTO granted patents and 6 published patent applications and 4 EPO patents. Top assignees: Johnson IP Holding, LLC, Jtec Energy, Inc., Johnson Battery Technologies, Inc.. Active years: 2016-2026.

USPTO Granted Patents = 9 (Patent Applications = 6)

% Patents Active = 88.9

EPO Patents = 4 (Patent Applications = 7)

Average Co-Inventor Count = 2.6

ph-index = 2

Forward Citations = 9(Granted Patents)

Location History:

Smyrna, GA (US) (2019)
Douglasville, GA (US) (2016 - 2023)

Company Filing History:

4 out of 24

Johnson IP Holding, LLC

Johnson Battery Technologies, Inc.

patents

Years Active: 2016-2026

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12531255 - Thermo-electrochemical converter (2026-01-20),

2. 12451545 - Halogen-based thermo-electrochemical converter (2025-10-21),

3. 11749826 - Thermo-electrochemical converter having dense metal electrode (2023-09-05),

4. 11417873 - Solid-state batteries, separators, electrodes, and methods of fabrication (2022-08-16),

5. 10566611 - Solid-state batteries, separators, electrodes, and methods of fabrication (2020-02-18),

6. 10333123 - High capacity solid state composite cathode, solid state composite separator, solid-state rechargeable lithium battery and methods of making same (2019-06-25),

7. 10084168 - Solid-state battery separators and methods of fabrication (2018-09-25),

8. 9793525 - Solid-state battery electrodes (2017-10-17),

9. 9356317 - Amorphous ionically conductive metal oxides and sol gel method of preparation (2016-05-31),

Title: Innovator Spotlight: David Ketema Johnson

Introduction

David Ketema Johnson is a prominent inventor based in Douglasville, GA, known for his contributions to the field of electrochemical technology. With a portfolio of seven patents, he has made significant strides in the areas of energy conversion and battery technology.

Latest Patents

Johnson's latest innovation is a thermo-electrochemical converter, which serves as a heat-to-electricity converter that utilizes a working fluid and a pair of membrane electrode assemblies (MEAs). Each MEA is designed with two electrodes that are both electron conductive and permeable to the working fluid, incorporating a thin film electrolyte membrane that efficiently conducts ions. The design enables one electrode to interact with the working fluid at higher pressure while the other operates at a lower pressure, facilitating the conversion process. Additionally, his patents include advancements in solid-state batteries, encompassing components like electrochemically active materials and solid inorganic electrolytes that function as binders in battery production.

Career Highlights

Johnson has actively contributed to the development of cutting-edge technologies through his ventures at Johnson IP Holding, LLC and Johnson Battery Technologies, Inc. His work has positioned these companies as significant players in the energy sector.

Collaborations

Throughout his career, Johnson has collaborated with notable inventors, including Lonnie G. Johnson and Lazbourne Alanzo Allie. These partnerships have fostered innovation and expanded the potential applications of their technological advancements.

Conclusion

David Ketema Johnson is an influential figure in the realm of innovations related to energy conversion and battery technology. His inventive spirit, combined with his collaborative efforts, continues to shape the future of electrochemical applications.