Growing community of inventors

Espoo, Finland

Olli Hamalainen

Average Co-Inventor Count = 2.00

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 = 7

Olli Hamalainen ↔ Kauko Piri (1 patent)Olli HamalainenOlli Hamalainen (1 patent)Kauko PiriKauko Piri (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Raha-automaattiyhdistys (1 from 4 patents)


1 patent:

1. 5104129 - Arrangement for a game playing device

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as of
12/20/2025
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