Growing community of inventors

Gouda, Netherlands

Hendrik Leendert Rieffe

Average Co-Inventor Count = 2.40

ph-index = 4

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 = 30

Hendrik Leendert RieffeEric Appelman (2 patents)Hendrik Leendert RieffeDirk Kenbeek (2 patents)Hendrik Leendert RieffeNigel Andrew Cooban (2 patents)Hendrik Leendert RieffeHendrik Leendert Rieffe (4 patents)Eric AppelmanEric Appelman (7 patents)Dirk KenbeekDirk Kenbeek (4 patents)Nigel Andrew CoobanNigel Andrew Cooban (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Unilever Patent Holdings B.v. (2 from 336 patents)

2. Unichema Chemie B.v. (2 from 21 patents)


4 patents:

1. 6346504 - Lubricant

2. 6008167 - Lubricant

3. 5707945 - Base fluids

4. 5688750 - Base fluid

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idiyas.com
as of
12/8/2025
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