Growing community of inventors

Westerville, OH, United States of America

Marc Christophersen

Average Co-Inventor Count = 3.00

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 = 5

Marc ChristophersenVladimir Kochergin (1 patent)Marc ChristophersenHelmut Föll (1 patent)Marc ChristophersenJürgen Carstensen (1 patent)Marc ChristophersenJörg Bahr (1 patent)Marc ChristophersenKay Steen (1 patent)Marc ChristophersenGeorgi Popkirov (1 patent)Marc ChristophersenMarc Christophersen (2 patents)Vladimir KocherginVladimir Kochergin (14 patents)Helmut FöllHelmut Föll (2 patents)Jürgen CarstensenJürgen Carstensen (2 patents)Jörg BahrJörg Bahr (1 patent)Kay SteenKay Steen (1 patent)Georgi PopkirovGeorgi Popkirov (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Lake Shore Cryotronics, Inc. (1 from 43 patents)

2. Kiel University (1 from 1 patent)


2 patents:

1. 7560018 - Semiconductor electrochemical etching processes employing closed loop control

2. 7208069 - Device for etching semiconductors with a large surface area

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as of
12/19/2025
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