Growing community of inventors

Mockfjärd, Sweden

Leif S Johansson

Average Co-Inventor Count = 6.00

ph-index = 2

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 = 21

Leif S Johansson ↔ Oskar E Juhlin (2 patents)Leif S Johansson ↔ Martin L Birath (2 patents)Leif S Johansson ↔ August H Michael (2 patents)Leif S Johansson ↔ Lars G E Carlborg (2 patents)Leif S Johansson ↔ Johan Rapp (2 patents)Leif S JohanssonLeif S Johansson (2 patents)Oskar E JuhlinOskar E Juhlin (85 patents)Martin L BirathMartin L Birath (23 patents)August H MichaelAugust H Michael (8 patents)Lars G E CarlborgLars G E Carlborg (2 patents)Johan RappJohan Rapp (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. 3M Innovative Properties Company (2 from 14,087 patents)


2 patents:

1. D671273 - Hearing protector

2. D668392 - Hearing protector

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as of
1/10/2026
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