Average Co-Inventor Count = 3.33
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.
Company Filing History:
1. Pelikan Aktiengesellschaft (3 from 50 patents)
2. Pritt Produktionsgesellschaft Mbh (1 from 12 patents)
4 patents:
1. 5891562 - Multi-layer, flexible transfer tape comprising polymeric hollow
2. 5135798 - Multilayer, flexible transfer strip
3. 4891260 - Multilayer flexible transfer ribbon
4. 4871620 - Typewriter ribbon having a thin support and a transferable mass, for