Growing community of inventors

Hattingen, Germany

Holger Leidreiter

Average Co-Inventor Count = 3.33

ph-index = 5

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 = 88

Holger LeidreiterMichael Ferenz (3 patents)Holger LeidreiterMatthias Pascaly (2 patents)Holger LeidreiterSascha Oestreich (2 patents)Holger LeidreiterManfred Krakenberg (2 patents)Holger LeidreiterSascha Herrwerth (1 patent)Holger LeidreiterMichael Fender (1 patent)Holger LeidreiterBurghard Gruening (1 patent)Holger LeidreiterPeter Hameyer (8 patents)Holger LeidreiterBurghard Grüning (8 patents)Holger LeidreiterJoerg Peggau (1 patent)Holger LeidreiterUta Kortemeier (1 patent)Holger LeidreiterAlfred Walter (1 patent)Holger LeidreiterKlaus Jenni (1 patent)Holger LeidreiterErika Messinger (1 patent)Holger LeidreiterAndrea Bungard (1 patent)Holger LeidreiterFelix Mueller (1 patent)Holger LeidreiterAstrid Zuendorff (1 patent)Holger LeidreiterStefan Stadtmuller (1 patent)Holger LeidreiterAkfred Walter (1 patent)Holger LeidreiterHolger Leidreiter (8 patents)Michael FerenzMichael Ferenz (64 patents)Matthias PascalyMatthias Pascaly (13 patents)Sascha OestreichSascha Oestreich (13 patents)Manfred KrakenbergManfred Krakenberg (9 patents)Sascha HerrwerthSascha Herrwerth (28 patents)Michael FenderMichael Fender (10 patents)Burghard GrueningBurghard Gruening (8 patents)Peter HameyerPeter Hameyer (8 patents)Burghard GrüningBurghard Grüning (8 patents)Joerg PeggauJoerg Peggau (5 patents)Uta KortemeierUta Kortemeier (4 patents)Alfred WalterAlfred Walter (3 patents)Klaus JenniKlaus Jenni (3 patents)Erika MessingerErika Messinger (2 patents)Andrea BungardAndrea Bungard (2 patents)Felix MuellerFelix Mueller (2 patents)Astrid ZuendorffAstrid Zuendorff (1 patent)Stefan StadtmullerStefan Stadtmuller (1 patent)Akfred WalterAkfred Walter (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Evonik Goldschmidt Corporation (3 from 80 patents)

2. Th. Goldschmidt Ag (2 from 331 patents)

3. Goldschmidt Ag (2 from 61 patents)

4. Goldschmidt Gmbh (1 from 47 patents)


8 patents:

1. 7964694 - Polysiloxanes having quaternary ammonium groups, a process for the preparation thereof and the use thereof in cleaning and care formulations

2. 7825207 - Siloxanes containing guanidino groups and use thereof for cosmetic formulations

3. 7776989 - UV-light-absorbing quaternary polysiloxanes

4. 7625853 - Aqueous surface-active formulation including polypropylene glycol(3) myristyl ether

5. 6630132 - UV-light-absorbing quaternary polysiloxanes

6. 6617391 - Linear polydialkylorganosiloxanes having polyoxyalkylene and amino-functional groups which additionally have terminal alkoxy groups

7. 6045781 - Transparent sunscreen gels

8. 5750097 - Use of diacetyl tartrate esters of fatty acid glycerides as hair

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as of
12/7/2025
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