Growing community of inventors

Oulu, Finland

Matti H Ark Onen

Average Co-Inventor Count = 4.00

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 = 15

Matti H Ark Onen ↔ Thomas Slotte (2 patents)Matti H Ark Onen ↔ Matti Kivioja (2 patents)Matti H Ark Onen ↔ Teuvo Maunula (1 patent)Matti H Ark Onen ↔ Pirkko J Virta (1 patent)Matti H Ark Onen ↔ Sointu Ravola (1 patent)Matti H Ark OnenMatti H Ark Onen (2 patents)Thomas SlotteThomas Slotte (3 patents)Matti KiviojaMatti Kivioja (2 patents)Teuvo MaunulaTeuvo Maunula (7 patents)Pirkko J VirtaPirkko J Virta (4 patents)Sointu RavolaSointu Ravola (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kemira Oy (2 from 53 patents)


2 patents:

1. 5612277 - Catalyst and method for manufacturing the same

2. 5580533 - Catalyst and process for purifying diesel exhaust gases

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as of
12/12/2025
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