Average Co-Inventor Count = 2.14
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.
Company Filing History:
1. Schwan-stabilo Schwanhausser Gmbh & Co. (3 from 19 patents)
2. Messrs. Schwan-stabilo Schwanhausser Gmbh & Co. (2 from 4 patents)
5 patents:
1. 5004363 - Applicator device for cosmetic uses
2. D271889 - Marking instrument
3. D269445 - Writing instrument
4. D268501 - Marking instrument
5. 4230655 - Pencils