Average Co-Inventor Count = 9.00
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. Sanyo Electric Co., Ltd. (3 from 8,777 patents)
3 patents:
1. 5877662 - Surface acoustic wave filter including series and parallel interdigital
2. 5663697 - Surface accoustic wave filter
3. 5543757 - Surface acoustic wave filter including alternate open and shorted