Kazuhito Hatoh

This inventor holds 81 USPTO granted patents and 5 published patent applications, plus 4 CIPO patents and 22 EPO patents, primarily in Polymer Electrolyte Fuel Cells (CPC class H01M8-10). Top assignees: Matsushita Electric Industrial Co., Ltd., Panasonic Corporation, Asahi Glass Company, Limited. Active years: 1991-2015.

USPTO Granted Patents = 81 (Patent Applications = 5)

% Patents Active = 53.1

CIPO Patents = 4

EPO Patents = 22 (Patent Applications = 9)

Average Co-Inventor Count = 5.5

ph-index = 16

Forward Citations = 753(Granted Patents)

Forward Citations (Not Self Cited) = 740(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Neyagawa, JP (1991)
Daitou, JP (1994 - 2002)
Daito, JP (1993 - 2005)
Osaka, JP (1994 - 2015)

Company Filing History:

51 out of 27,375

Matsushita Electric Industrial Co., Ltd.

patents

28 out of 16,454

Panasonic Corporation

patents

1 out of 2,560

Asahi Glass Company, Limited

patents

4. 1 out of 28

Matushita Electric Industrial Co., Ltd.

patents

5. 1 out of 13,338

Panasonic Intellectual Property Management Co., Ltd.

patents

where one patent can have more than one assignee

Years Active: 1991-2015

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Areas of Expertise:

Polymer Electrolyte Fuel Cell

Hydrogen Generation Device

Photoelectrochemical Cell

Electrode Manufacturing

Separator Plate

Fuel Cell System

Differential Pressure Control

Current Collector Plates

Membrane-Electrode Assembly

Preservation Assembly

Gas Diffusion Layers

Manifold Apertures

81 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8951447 - Optically pumped semiconductor and device using the same (2015-02-10),

2. 8734625 - Hydrogen generation device (2014-05-27),

3. 8663872 - Method for manufacturing membrane-membrane reinforcing member assembly, membrane-catalyst layer assembly, membrane-electrode assembly, and polymer electrolyte fuel cell (2014-03-04),

4. 8454807 - Photoelectrochemical cell (2013-06-04),

5. 8404401 - Fuel cell having improved contact between separators and gas diffusion layers (2013-03-26),

6. 8236146 - Photoelectrochemical cell and energy system using the same (2012-08-07),

7. 8137863 - Fuel cell (2012-03-20),

8. 8137829 - Method of preserving polymer electrolyte fuel cell stack and preservation assembly of polymer electrolyte fuel cell stack (2012-03-20),

9. 8097112 - Method for manufacturing membrane-electrode assembly (2012-01-17),

10. 8084165 - MEA, MEA manufacturing method, and polymer electrolyte fuel cell (2011-12-27),

11. 8021772 - Preservation assembly of polymer electrolyte fuel cell stack (2011-09-20),

12. 8012646 - Polymer electrolyte fuel cell provided with a tightening pressure (2011-09-06),

13. 8003239 - Method of preserving polymer electrolyte fuel cell stack and preservation assembly of polymer electrolyte fuel cell stack (2011-08-23),

14. 7976972 - Method of preserving polymer electrolyte fuel cell stack and preservation assembly of polymer electrolyte fuel cell stack (2011-07-12),

15. 7943261 - Method of operating fuel cell system and fuel cell system (2011-05-17),

Title: Kazuhito Hatoh - Innovative Inventor from Osaka

Introduction: Kazuhito Hatoh is a renowned inventor hailing from Osaka, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Kazuhito Hatoh holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his versatility and forward-thinking approach to invention.

Career Highlights: With a career spanning over two decades, Hatoh has worked with leading research institutions and tech companies to develop cutting-edge solutions that have revolutionized various industries.

Collaborations: Throughout his career, Kazuhito Hatoh has collaborated with top engineers, scientists, and designers, fostering a culture of innovation and excellence in all his projects.

Conclusion: Kazuhito Hatoh's passion for innovation and his relentless pursuit of excellence have solidified his reputation as a visionary inventor, inspiring the next generation of innovators to push the boundaries of what is possible.