Average Co-Inventor Count = 1.91
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.
Company Filing History:
1. Pelikan Aktiengesellschaft (3 from 50 patents)
2. Pelikan Akteingesellschaft (1 from 2 patents)
3. Pelikan Aktiengesellschaft Ag (1 from 1 patent)
5 patents:
1. 5286127 - Writing instrument
2. 4759651 - Writing instrument with a signal cap
3. 4733586 - Method of and apparatus for making a capillary-action nib for a pen or
4. 4627757 - Writing instrument with signaling cap
5. 4583875 - Method of nib attachment