Farmington, CT, United States of America

Paul R Hanrahan

This inventor holds 81 USPTO granted patents and 19 published patent applications and 41 EPO patents, primarily in Aircraft Propulsion Systems. Top assignees: Rtx Corporation, Raytheon Technologies Corporation, United Technologies Corporation. Active years: 1991-2026.

USPTO Granted Patents = 81 (Patent Applications = 19)

% Patents Active = 98.8

EPO Patents = 41 (Patent Applications = 70)

Average Co-Inventor Count = 1.7

ph-index = 5

Forward Citations = 106(Granted Patents)

Forward Citations (Not Self Cited) = 58(Dec 10, 2025)

Location History:

Farmington, CT (US) (1991 - 2023)
Sedona, AZ (US) (2022 - 2024)

Company Filing History:

Raytheon Technologies Corporation

patents

7 out of 10,655

United Technologies Corporation

patents

4. 3 out of 36

Doosan Fuel Cell America, Inc.

Doosan Fuel Cell Amreica, Inc.

patent

7. 1 out of 1

Raython Technologies Group

patent

8. 1 out of 834,307

Other

patents

Years Active: 1991-2026

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Areas of Expertise:

Aircraft Propulsion

Geartrain

Turbine Engine

Variable Speed

Boost Spool

Gas Turbine

Power Distribution

Rotating Structure

Fluid Device

Vertical Stabilizer

Hybrid Electric

Differential Driven

81 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12723760 - Aircraft powerplant with boosted turbine engine and fuel cell system (2026-09-01),

2. 12723556 - Splitter assembly for a gas turbine engine of an aircraft propulsion system (2026-09-01),

3. 12715588 - Thermal anti-icing system for aircraft airframe exterior surface (2026-08-25),

4. 12674411 - Aircraft propulsion system with auxiliary turbine system (2026-07-07),

5. 12643669 - Aircraft propulsion system with core flowpath inlet forward of fan rotor (2026-06-02),

6. 12600454 - Inlet vane forward of aircraft propulsion system airflow inlet (2026-04-14),

7. 12565328 - Differential driven open rotor with brake (2026-03-03),

8. 12552545 - Drivetrain for aircraft powerplant with boosted turbine engine (2026-02-17),

9. 12540579 - Remote mounted accessory gearbox (2026-02-03),

10. 12540578 - Hybrid electric gas turbine engine two speed transmission for low spool drive power injection and power extraction (2026-02-03),

11. 12529349 - Aircraft propulsion system with variable speed rotating structure (2026-01-20),

12. 12497905 - Non-uniform and bi-tri stator spacing for swirl recovery vane (SRV) open rotor engines (2025-12-16),

13. 12492663 - Aircraft propulsion system geartrain (2025-12-09),

14. 12466548 - Aircraft vertical stabilizer with air system (2025-11-11),

15. 12459631 - Aircraft vertical stabilizer with moveable propulsion system(s) (2025-11-04),

Title: The Innovative Mind of Paul R Hanrahan

Introduction:

Paul R Hanrahan, a prolific inventor hailing from Farmington, CT, is a trailblazer in the field of aviation technology with an impressive portfolio of 41 patents under his belt. His groundbreaking work has significantly impacted the aerospace industry, particularly in the realm of aircraft propulsion systems.

Latest Patents:

Among his latest patents is the "Selective Power Distribution for an Aircraft Propulsion System." This assembly revolutionizes aircraft technology by incorporating a rotating structure, geartrain, propulsor rotor, and electric machine to enhance power distribution efficiency in aircraft propulsion systems. Additionally, his invention of the "Transmission and Method for Control of Boost Spool" in gas turbine engines showcases his innovative approach to optimizing engine performance.

Career Highlights:

Paul R Hanrahan has made significant contributions during his tenure at esteemed companies such as Raytheon Technologies Corporation and RTX Corporation. His expertise and dedication have led to advancements in aviation technology that have set new standards in the industry.

Collaborations:

Throughout his career, Paul R Hanrahan has collaborated with talented individuals such as Daniel Bernard Kupratis and Arthur M Salve, Jr. These partnerships have been instrumental in bringing his innovative ideas to life and pushing the boundaries of technological advancement in aviation.

Conclusion:

In conclusion, Paul R Hanrahan's inventive spirit and unparalleled dedication to advancing aviation technology have solidified his reputation as a prominent figure in the field of aerospace innovation. His contributions continue to shape the future of aircraft propulsion systems, inspiring the next generation of inventors to push the boundaries of what is possible in the skies.