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For the Inventor, By the Inventor

Auburn Hills, MI, United States of America

Gkn Sinter Metals Gmbh


USPTO Granted Patents = 79

% Expired Patents = 25.3



Forward Citations = 235

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80 inventors (with patents filed for the assignee):

goldMedal Ian W Donaldson (16 out of 18 patents)

silverMedal Joel H Mandel (14 out of 18 patents)

bronzeMedal Timothy E Geiman (10 out of 11 patents)

4.  Donald Paul Bishop (8 out of 8 patents)

5.  Richard L Hexemer (8 out of 8 patents)

6.  Alan C Taylor (8 out of 9 patents)

7.  Alfred J Chiesa (8 out of 9 patents)

8.  Donald D Cooper (6 out of 7 patents)

9.  Henry James Knott (6 out of 6 patents)

10.  Virgiliu-Adrian Savu (5 out of 5 patents)

11.  David E Lenhart (5 out of 5 patents)

12.  Donald J Phillips (5 out of 5 patents)

13.  Ewald May (5 out of 9 patents)

14.  Gary R Draxler (4 out of 4 patents)

15.  Jeffrey W Lemke (4 out of 4 patents)


Core Competencies:
Carburizing Method
Aluminum Alloy
Fatigue Strength
Powder Metal Insert
Sinter Fit
Brazed Components
Differential Gear
Surface Densification
Connecting Rod
Porous Plain Bearing
Piston Manufacturing
Tooling Process

79 patents:

1. 12629750 - Precipitation hardening powder metal composition (2026-05-19),
2. 12553118 - Variable diffusion carburizing method (2026-02-17),
3. 11794240 - Powder metal alloy composition for sintered powder metal insert for aluminum casting (2023-10-24),
4. 11752550 - Method for improving fatigue strength on sized aluminum powder metal components (2023-09-12),
5. 11662011 - Pump assembly and method for producing a pump assembly (2023-05-30),
6. 11434955 - Method of forming a powder metal insert having a horizontal through hole and method of casting same into an engine component (2022-09-06),
7. 11273489 - Aluminum alloy powder formulations with silicon additions for mechanical property improvements (2022-03-15),
8. 11105369 - Method of producing composite component having brass or bronze using sinter fit (2021-08-31),
9. 11060595 - NVH modification for differential assembly (2021-07-13),
10. 10900552 - Forged composite inner race for a CVJ (2021-01-26),
11. 10888928 - Method of producing composite components using sinter fit (2021-01-12),
12. 10870148 - Aluminum alloy powder metal with transition elements (2020-12-22),
13. 10859117 - Method of forming a powder metal insert having a horizontal through hole (2020-12-08),
14. 10773308 - Rotor and method of manufacturing rotor with equalized surface areas for grinding (2020-09-15),
15. 10596631 - Method of forming a composite component using post-compaction dimensional change (2020-03-24),
GKN Sinter Metals GmbH is a subsidiary of GKN Powder Metallurgy, serving as a global market leader in metal powder-based components and systems for automotive and industrial applications. With a comprehensive portfolio of powder metal technologies, GKN Sinter Metals GmbH offers innovative solutions for engines, transmissions, and other critical components, contributing to the advancement of sustainable mobility and machinery efficiency. As a reliable partner, they collaborate closely with their customers to consistently deliver high-quality products that meet the most demanding requirements.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Sep 22 2026

Gkn Sinter Metals Gmbh
79 Patents

#22 in

#4,682 in Germany

#9,552 in the World

Auburn Hills, MI (US)
Auburn Hills, MI, United States of America

Gkn Sinter Metals Gmbh

Forward Citations = 235

80 inventors:

goldMedal Ian W Donaldson (16 out of 18 patents)

silverMedal Joel H Mandel (14 out of 18 patents)

bronzeMedal Timothy E Geiman (10 out of 11 patents)

4.  Donald Paul Bishop (8 out of 8 patents)

5.  Richard L Hexemer (8 out of 8 patents)

Please report any incorrect information to [email protected]
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