Growing community of inventors

Duesseldorf, Germany

Ludwig Speitkamp

Average Co-Inventor Count = 3.00

ph-index = 3

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 = 21

Ludwig SpeitkampWolfgang Ritter (5 patents)Ludwig SpeitkampHans-Dieter Sitz (5 patents)Ludwig SpeitkampLudwig Speitkamp (5 patents)Wolfgang RitterWolfgang Ritter (55 patents)Hans-Dieter SitzHans-Dieter Sitz (9 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Henkel Kommanditgesellschaft Auf Aktien (5 from 2,080 patents)


5 patents:

1. 5648518 - Process for producing esters of (meth) acrylic acid and polyhydric

2. 5350877 - Process for the improved production of (meth)acrylic acid esters of

3. 5210281 - Dry neutralization process for organic liquid phases

4. 5198574 - Process for the improved production of (meth)acrylic acid esters of

5. 5159106 - Process for the improved production of (meth)acrylic acid esters of

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as of
12/7/2025
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