Average Co-Inventor Count = 2.40
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. Cselt-centro Studi E Laboratori Telecomunicazioni S.p.a. (1 from 280 patents)
2. Marelli Autronica S.p.a. (1 from 46 patents)
2 patents:
1. 5313121 - Circuit for processing signals supplied by a zirconium-type oxygen sensor
2. 4709340 - Digital speech synthesizer