Growing community of inventors

Gross-Bieberau, Germany

Georg Keil

Average Co-Inventor Count = 1.24

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 = 62

Georg KeilSiegbert Vial (1 patent)Georg KeilHartmut Erlinghagen (1 patent)Georg KeilKarl Heinz Zulauf (1 patent)Georg KeilGeorg Keil (6 patents)Siegbert VialSiegbert Vial (4 patents)Hartmut ErlinghagenHartmut Erlinghagen (1 patent)Karl Heinz ZulaufKarl Heinz Zulauf (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Merz & Krell Gmbh & Co. (2 from 13 patents)

2. Senator Gmbh & Co. Kgaa (1 from 26 patents)

3. Firma Merz & Kreel Gmbh & Co. (1 from 1 patent)

4. Firma Merz & Krell Gmbh & Co. (1 from 1 patent)

5. Merz & Co. Gmbh & Co. Kg (1 from 1 patent)


6 patents:

1. 7246638 - Filling device comprising lateral filling windows

2. 5988434 - Dosage withdrawal apparatus

3. 5433545 - Writing implement

4. 5145272 - Projectable and retractable, push button writing instrument

5. 5026189 - Writing implement with coaxial alternately usable tips

6. 4999017 - Multi-color writing utensil

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1/16/2026
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