Average Co-Inventor Count = 3.75
ph-index = 4
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. Electro-sound, Inc. (2 from 6 patents)
2. Sony Electronics Inc (1 from 2,335 patents)
3. Sony Corporation of America (1 from 198 patents)
4 patents:
1. 5351161 - Variable scale rotary switch
2. 5187630 - Multi-parameter variable scale rotary switch
3. 4589608 - Cassette loading apparatus
4. 4512527 - Cassette loading apparatus