Claus Hoffjann

This inventor holds 54 USPTO granted patents and 6 published patent applications, plus 4 CIPO patents and 23 EPO patents, primarily in Fuel Cell Systems (CPC class H01M). Top assignees: Airbus Deutschland Gmbh, Airbus Operations Gmbh, Airbus Defence and Space Gmbh. Active years: 2003-2023.

USPTO Granted Patents = 54 (Patent Applications = 6)

% Patents Active = 46.3

CIPO Patents = 4

EPO Patents = 23 (Patent Applications = 18)

Average Co-Inventor Count = 2.5

ph-index = 11

Forward Citations = 410(Granted Patents)

Forward Citations (Not Self Cited) = 383(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Wulmstorf, DE (2008)
Neu Wulmstorf, DE (2006 - 2010)
Hamburg, DE (2003 - 2023)

Company Filing History:

27 out of 577

Airbus Deutschland Gmbh

patents

27 out of 3,822

Airbus Operations Gmbh

patents

1 out of 485

Airbus Defence and Space Gmbh

patents

where one patent can have more than one assignee

Years Active: 2003-2023

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Areas of Expertise:

Fuel Cell

Aircraft Energy Supply

Auxiliary Power System

Hydrogen Tank

Solid Oxide Fuel Cell

Fire Protection

Cooling Assembly

Water System

Hybrid Drive

Exhaust Gas

Safety System

Sorting Device

54 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11695127 - Bipolar plate for use in a fuel cell stack (2023-07-04),

2. 11158874 - Auxiliary power system for an airplane and an airplane with such an auxiliary power system (2021-10-26),

3. 10632333 - Supply system and method for providing electric energy, oxygen depleted air and water as well and aircraft having such a supply system (2020-04-28),

4. 10583935 - Supply system for providing at least oxygen depleted air and water in a vehicle and aircraft having such a supply system (2020-03-10),

5. 10516175 - Fuel cell system, a fire fighting system, and an aircraft (2019-12-24),

6. 10446863 - Auxiliary power system for an airplane and an airplane with such an auxiliary power system (2019-10-15),

7. 10293945 - Aircraft having a redundant and efficient bleed system (2019-05-21),

8. 10173086 - Supply system and method for providing electric energy, oxygen depleted air and water as well and aircraft having such a supply system (2019-01-08),

9. 9897041 - Engine for propelling an aircraft and aircraft having at least one engine and at least one hydrogen tank (2018-02-20),

10. 9882227 - Fuel cell system, a fire fighting system, and an aircraft (2018-01-30),

11. 9673460 - Fuel cell system, use of a fuel cell system and aircraft with a fuel cell system (2017-06-06),

12. 9541001 - Drive unit, method for providing power, and use of a drive unit (2017-01-10),

13. 9350037 - Method for manufacturing a solid oxide fuel cell element by layer-wise buildup and solid oxide fuel cell element (2016-05-24),

14. 9130204 - System for drying the exhaust gases from a fuel cell system using the existing liquid hydrogen as a heat sink (2015-09-08),

15. 8910484 - System and process for the reduction of harmful substances in engine exhaust gases (2014-12-16),

Title: Claus Hoffjann: Pioneering Inventor from Hamburg

Introduction: Claus Hoffjann is a distinguished inventor hailing from the vibrant city of Hamburg, Germany. With a passion for innovation and a keen eye for detail, he has made significant contributions to the field of technology through his groundbreaking inventions.

Latest Patents: Claus Hoffjann's latest patents showcase his expertise in areas such as renewable energy, sustainable transportation, and advanced materials. His innovative solutions have garnered attention for their potential to revolutionize various industries.

Career Highlights: Throughout his illustrious career, Claus Hoffjann has been recognized for his inventive spirit and problem-solving abilities. His dedication to pushing the boundaries of what is possible has led to the development of cutting-edge technologies that have the potential to shape the future.

Collaborations: Claus Hoffjann has collaborated with leading research institutions, universities, and companies to bring his inventions to life. By working with experts from diverse fields, he has been able to leverage their knowledge and expertise to enhance the impact of his innovations.

Conclusion: In conclusion, Claus Hoffjann's relentless pursuit of innovation and his commitment to excellence have established him as a trailblazer in the world of inventors. His visionary ideas and groundbreaking inventions continue to inspire the next generation of innovators to push the boundaries of what is possible.