Growing community of inventors

Bovenkarspel, Netherlands

Johannes Petrus Maria Opperman

Average Co-Inventor Count = 3.00

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 = 8

Johannes Petrus Maria OppermanCornelis Gerardus Van Koert (1 patent)Johannes Petrus Maria OppermanPetrus Van Der Velden (1 patent)Johannes Petrus Maria OppermanJohannes Petrus Maria Opperman (1 patent)Cornelis Gerardus Van KoertCornelis Gerardus Van Koert (2 patents)Petrus Van Der VeldenPetrus Van Der Velden (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Voestalpine Polynorm Plastics B.v. (1 from 1 patent)


1 patent:

1. 8220850 - Impact-absorbing element for a vehicle and methods of producing the same

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