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For the Inventor, By the Inventor

Indianapolis, IN, United States of America

Rolls-Royce North American Technologies Inc.


USPTO Granted Patents = 920



Trademarks = 2

Forward Citations = 3,187

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456 inventors (with patents filed for the assignee):

goldMedal Ted Joseph Freeman (164 out of 212 patents)

silverMedal Aaron D Sippel (76 out of 132 patents)

bronzeMedal Daniel Kent Vetters (74 out of 108 patents)

4.  David John Thomas (72 out of 116 patents)

5.  Douglas David Dierksmeier (48 out of 52 patents)

6.  Douglas J Snyder (40 out of 42 patents)

7.  Robert W Heeter (38 out of 54 patents)

8.  Daniel E Molnar, Jr (38 out of 46 patents)

9.  Richard Joseph Skertic (34 out of 36 patents)

10.  Mark Jon Blackwelder (33 out of 33 patents)

11.  Edward Claude Rice (32 out of 60 patents)

12.  Matthew R Gold (30 out of 38 patents)

13.  Andrew J Eifert (29 out of 32 patents)

14.  Michael James Armstrong (29 out of 34 patents)

15.  Kenneth M Pesyna (28 out of 32 patents)


Core Competencies:
Gas Turbine Engines
Thermal Management
Hybrid Propulsion Systems
Variable Fan Outlet Guide Vane
Electrical Energy Systems
Turbine Assembly
Airfoil Coatings
Thermal Energy Storage
Centrifugal Air-Oil Separator
Filament Fabrication
High Mach Nozzle
Rotor Assembly

920 patents:

1. 12510029 - Electric generator in turbine engine (2025-12-30),
2. 12504240 - Heat exchanger with expansion joint insert for thermal expansion and external force tolerance (2025-12-23),
3. 12503956 - Closed Brayton cycle power generation system with compressor discharge fluid driven cooling flow for cooling electrical hardware (2025-12-23),
4. 12500461 - Rotor with magnet retention band for use with electric machines (2025-12-16),
5. 12480422 - Segmented variable fan outlet guide vane with pass through actuation mechanisms (2025-11-25),
6. 12460601 - Plug nozzle and thrust reverser for high mach gas turbine engines (2025-11-04),
7. 12459196 - Patterned filament for fused filament fabrication (2025-11-04),
8. 12442302 - Solid-state welded multi-piece radial turbine with air cooled blades for gas turbine engines (2025-10-14),
9. 12435634 - Notched turbine airfoils for weight reduction in gas turbine engines (2025-10-07),
10. 12432877 - Polymeric cold plate for thermal management of power electronics (2025-09-30),
11. 12428974 - Segmented variable fan outlet guide vane with unique actuation mechanisms (2025-09-30),
12. 12421914 - Compact infrared suppressors with ring vanes for gas turbine engines (2025-09-23),
13. 12421905 - Thermal energy system to minimize or eliminate rotor bow (2025-09-23),
14. 12421892 - Hybrid turbine engine with selective electrical module engagement (2025-09-23),
15. 12404776 - Airfoil with protective coating (2025-09-02),
Rolls-Royce North American Technologies Inc. is a leading provider of cutting-edge technologies and services in the aerospace, defense, and energy sectors. With a rich heritage dating back over a century, the company combines advanced engineering expertise with innovative solutions to deliver exceptional performance across a wide range of applications. As part of the global Rolls-Royce Group, Rolls-Royce North American Technologies Inc. is committed to pushing the boundaries of technology and driving progress in the industries it serves.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

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920 Patents

#7 in Indianapolis, IN

#12 in Indiana

#544 in US

#1,075 in the World

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Indianapolis, IN, United States of America

Rolls-Royce North American Technologies Inc.

Forward Citations = 3,187

456 inventors:

goldMedal Ted Joseph Freeman (164 out of 212 patents)

silverMedal Aaron D Sippel (76 out of 132 patents)

bronzeMedal Daniel Kent Vetters (74 out of 108 patents)

4.  David John Thomas (72 out of 116 patents)

5.  Douglas David Dierksmeier (48 out of 52 patents)

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