Growing community of inventors

Zell (Neckar), undefined

Erich Willmann

Average Co-Inventor Count = 2.18

ph-index = 3

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 = 10

Erich WillmannGunter Trischler (2 patents)Erich WillmannGunther Trischler (1 patent)Erich WillmannHartmut Reichert (1 patent)Erich WillmannWilfried Michel (1 patent)Erich WillmannErich Willmann (4 patents)Gunter TrischlerGunter Trischler (2 patents)Gunther TrischlerGunther Trischler (3 patents)Hartmut ReichertHartmut Reichert (3 patents)Wilfried MichelWilfried Michel (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Simplex Time Recorder Co. (3 from 52 patents)

2. Simplex Time Recorder (1 from 1 patent)


4 patents:

1. 4063071 - Flexitime recorder

2. 4041503 - Attendance time recorder

3. 3974362 - Flexitime recorder

4. 3952313 - Time recorder

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as of
1/20/2026
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