Average Co-Inventor Count = 1.16
ph-index = 9
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. J.s. Staedtler Gmbh & Co. (8 from 49 patents)
2. J.s. Staedtler Gmbh & Co. Kg (8 from 34 patents)
3. Staedtler Mars Gmbh & Co. Kg (2 from 26 patents)
18 patents:
1. D781958 - Cap
2. D765782 - Pencil with cap and stylus
3. D733220 - Pencil with stylus
4. D647965 - Writing instrument
5. D626996 - Writing instrument
6. D607054 - Instrument for writing, drawing or painting
7. D605695 - Instrument for writing, drawing or painting
8. D582979 - Instrument for writing, drawing or painting
9. D551708 - Instrument for writing, drawing or painting
10. D531665 - Writing, drawing or painting utensil
11. D530747 - Writing, drawing or painting utensil
12. D518522 - Writing, drawing or painting utensil
13. 6364100 - Case for rod-shaped objects
14. D427433 - Case
15. D419188 - Combined compass and writing instrument