Growing community of inventors

Tampere, Finland

Leo Häkkinen

Average Co-Inventor Count = 1.33

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 = 28

Leo HäkkinenTapani Huhdanmäki (1 patent)Leo HäkkinenLeo Häkkinen (2 patents)Tapani HuhdanmäkiTapani Huhdanmäki (3 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Sandvik Tamrock Oy (1 from 38 patents)

2. Sandvik Tamrock (1 from 1 patent)


2 patents:

1. 6615932 - Arrangement in rock drilling apparatus

2. 6616244 - Method and arrangement for determining position of unmanned mining vehicles

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as of
12/19/2025
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