Growing community of inventors

Eindhoven, Netherlands

Johannes Wilhelmus Ter Vrugt

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 = 10

Johannes Wilhelmus Ter Vrugt ↔ Lambertus Wilhelmus Manders (1 patent)Johannes Wilhelmus Ter Vrugt ↔ Willem Lambertus Wanmaker, Deceased (1 patent)Johannes Wilhelmus Ter VrugtJohannes Wilhelmus Ter Vrugt (1 patent)Lambertus Wilhelmus MandersLambertus Wilhelmus Manders (4 patents)Willem Lambertus Wanmaker, DeceasedWillem Lambertus Wanmaker, Deceased (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. U.S. Philips Corporation (1 from 14,087 patents)


1 patent:

1. 4069441 - Electric gas discharge lamp having two superposed luminescent layers

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12/21/2025
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