Average Co-Inventor Count = 2.00
ph-index = 2
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. Preh Elektrofeinmechanische Werke Jakob Preh Nachf Gmbh & Co. (1 from 49 patents)
2. Preh, Elektrofeinmechanische Werke (1 from 3 patents)
3. Jacob Preh Nachf. Gmbh & Co. (1 from 1 patent)
2 patents:
1. 4555533 - Bonding assistant for a support material
2. 4319217 - Printed circuit