Average Co-Inventor Count = 3.00
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. Facit Aktiebolag (2 from 29 patents)
2. Aktiebolaget Electrolux (1 from 668 patents)
3 patents:
1. 4095237 - Ink jet printing head
2. 4005440 - Printing head for ink jet printer
3. 3953862 - Printing head device for an ink jet printer