Growing community of inventors

Saint Joseph, MI, United States of America

Mark Alan Hartfield

Average Co-Inventor Count = 7.00

ph-index = 1

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 = 3

Mark Alan HartfieldMark Stephen Taipale (8 patents)Mark Alan HartfieldRussell Lawrence MacAdam (8 patents)Mark Alan HartfieldJohn Francis Waymouth (8 patents)Mark Alan HartfieldRobert Thomas Nachtrieb (8 patents)Mark Alan HartfieldRenzo Corrado DeMeo (8 patents)Mark Alan HartfieldFarheen Khan (8 patents)Mark Alan HartfieldMark Alan Hartfield (8 patents)Mark Stephen TaipaleMark Stephen Taipale (81 patents)Russell Lawrence MacAdamRussell Lawrence MacAdam (34 patents)John Francis WaymouthJohn Francis Waymouth (27 patents)Robert Thomas NachtriebRobert Thomas Nachtrieb (14 patents)Renzo Corrado DeMeoRenzo Corrado DeMeo (8 patents)Farheen KhanFarheen Khan (8 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Lutron Electronics Company, Inc. (8 from 1,232 patents)


8 patents:

1. 7368916 - Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps

2. 7339322 - Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps

3. 7323877 - Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps

4. 7259519 - Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps

5. 7224124 - Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps

6. 7196476 - Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps

7. 7116055 - Apparatus and methods for making spectroscopic measurements of cathode fall in fluorescent lamps

8. 7002301 - Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps

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as of
12/8/2025
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