Growing community of inventors

Troy, MI, United States of America

Donald J Armstrong

Average Co-Inventor Count = 3.05

ph-index = 7

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 280

Donald J ArmstrongKarl Jacob Haltiner, Jr (1 patent)Donald J ArmstrongBart Dean Hibbs (1 patent)Donald J ArmstrongFrank Ament (1 patent)Donald J ArmstrongKevin Richard Keegan (1 patent)Donald J ArmstrongHaskell Simpkins (1 patent)Donald J ArmstrongSubhasish Mukerjee (1 patent)Donald J ArmstrongJames Franklin Hengel (1 patent)Donald J ArmstrongJohn G Noetzel (1 patent)Donald J ArmstrongMichael Thomas Faville (1 patent)Donald J ArmstrongRichard H Smith (1 patent)Donald J ArmstrongRoy A Giacomazzi (1 patent)Donald J ArmstrongJohn F O'Brien (1 patent)Donald J ArmstrongGregory E Rich (1 patent)Donald J ArmstrongHarry L Husted (1 patent)Donald J ArmstrongHarold E Durling (1 patent)Donald J ArmstrongMarc Bryan Center (1 patent)Donald J ArmstrongDavid R Schumann (1 patent)Donald J ArmstrongChristopher M DeMinco (1 patent)Donald J ArmstrongM James Grieve (1 patent)Donald J ArmstrongJames Michael Haller (1 patent)Donald J ArmstrongCatherine Vavonese (1 patent)Donald J ArmstrongBrian R Jensen (1 patent)Donald J ArmstrongJuergen T Kammerer (1 patent)Donald J ArmstrongJohn E Ausen (1 patent)Donald J ArmstrongSteven R Shaffer (1 patent)Donald J ArmstrongDavid H Swan (1 patent)Donald J ArmstrongGerald S McAlwee (1 patent)Donald J ArmstrongGeorge W Niepoth (1 patent)Donald J ArmstrongDonald J Armstrong (7 patents)Karl Jacob Haltiner, JrKarl Jacob Haltiner, Jr (95 patents)Bart Dean HibbsBart Dean Hibbs (89 patents)Frank AmentFrank Ament (50 patents)Kevin Richard KeeganKevin Richard Keegan (30 patents)Haskell SimpkinsHaskell Simpkins (28 patents)Subhasish MukerjeeSubhasish Mukerjee (26 patents)James Franklin HengelJames Franklin Hengel (13 patents)John G NoetzelJohn G Noetzel (12 patents)Michael Thomas FavilleMichael Thomas Faville (12 patents)Richard H SmithRichard H Smith (12 patents)Roy A GiacomazziRoy A Giacomazzi (11 patents)John F O'BrienJohn F O'Brien (9 patents)Gregory E RichGregory E Rich (9 patents)Harry L HustedHarry L Husted (9 patents)Harold E DurlingHarold E Durling (8 patents)Marc Bryan CenterMarc Bryan Center (7 patents)David R SchumannDavid R Schumann (6 patents)Christopher M DeMincoChristopher M DeMinco (4 patents)M James GrieveM James Grieve (4 patents)James Michael HallerJames Michael Haller (3 patents)Catherine VavoneseCatherine Vavonese (2 patents)Brian R JensenBrian R Jensen (2 patents)Juergen T KammererJuergen T Kammerer (2 patents)John E AusenJohn E Ausen (2 patents)Steven R ShafferSteven R Shaffer (2 patents)David H SwanDavid H Swan (2 patents)Gerald S McAlweeGerald S McAlwee (1 patent)George W NiepothGeorge W Niepoth (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Gm Global Technolgoy Operations, Inc. (4 from 31,024 patents)

2. Delphi Technologies, Inc. (2 from 5,161 patents)

3. Other (1 from 832,880 patents)


7 patents:

1. 6682841 - Thermal management for a vehicle mounted fuel cell system

2. 6588392 - Fuel efficient powertrain system

3. 6562496 - Integrated solid oxide fuel cell mechanization and method of using for transportation industry applications

4. 5070849 - Modular fuel delivery system

5. 4630749 - Fuel fill tube with vapor vent and overfill protection

6. 4539956 - Diesel fuel injection pump with adaptive torque balance control

7. 4394856 - Compression operated injector with fuel injection control

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as of
1/5/2026
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