Growing community of inventors

Oststeinbek, Germany

Stephan Sprenger

Average Co-Inventor Count = 2.00

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 = 25

Stephan SprengerMatthias Naumann (2 patents)Stephan SprengerMichael Ciesielski (2 patents)Stephan SprengerManfred Döring (1 patent)Stephan SprengerManfred Doering (1 patent)Stephan SprengerJaclyn Balthasar (3 patents)Stephan SprengerChristian Eger (1 patent)Stephan SprengerRainer Utz (1 patent)Stephan SprengerCarsten Kollann (1 patent)Stephan SprengerMatthias Naumann (0 patent)Stephan SprengerStephan Sprenger (6 patents)Matthias NaumannMatthias Naumann (17 patents)Michael CiesielskiMichael Ciesielski (8 patents)Manfred DöringManfred Döring (8 patents)Manfred DoeringManfred Doering (4 patents)Jaclyn BalthasarJaclyn Balthasar (3 patents)Christian EgerChristian Eger (3 patents)Rainer UtzRainer Utz (1 patent)Carsten KollannCarsten Kollann (1 patent)Matthias NaumannMatthias Naumann (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Evonik Degussa Gmbh (2 from 1,242 patents)

2. Evonik Hanse Gmbh (2 from 5 patents)

3. Forschungszentrum Karlsruhe Gmbh (1 from 194 patents)

4. Schill & Seilacher (gmbh & Co.) (1 from 12 patents)

5. Evonik Operations Gmbh (601 patents)


6 patents:

1. 10479726 - Fibersizing with small amounts of nanomaterials

2. 10422074 - Carbon fibre fibre-sizing containing nanoparticles

3. 9175145 - Polymeric epoxy resin composition

4. 9102778 - Modified phenol resins

5. 7115765 - Method for producing 6-alkoxy-(6H)-dibenz [c,e] [1,2]-oxaphosphorines

6. 6555227 - Latent combination compounds and latent ammonium salts comprising epoxide resin curing agents and flame-protection agents as well as epoxide resin systems and products prepared from them

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1/3/2026
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