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Valkeakoski, Finland

Pentti Pirinen

Average Co-Inventor Count = 2.00

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 = 27

Pentti PirinenHelmer Gustafsson (1 patent)Pentti PirinenTapio Niemi (1 patent)Pentti PirinenPentti Pirinen (2 patents)Helmer GustafssonHelmer Gustafsson (5 patents)Tapio NiemiTapio Niemi (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Upm-kymmene Oyj Corporation (1 from 22 patents)

2. Yhtyneet Paperitehtaat Oy Walkisoft Engineering (1 from 2 patents)


2 patents:

1. 6007653 - Manufacturing method and nonwoven material

2. 5269049 - Process and apparatus for dry forming of a material web from a

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