Average Co-Inventor Count = 4.34
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. Pioneer Electronic Corporation (3 from 2,861 patents)
2. Sony Corporation (1 from 58,132 patents)
3. Nec Corporation (1 from 35,756 patents)
4. Bridgestone Corporation (5,125 patents)
5. Ebara Environmental Plant Co., Ltd. (6 patents)
4 patents:
1. 5880815 - Image pickup apparatus capable of preventing overlap or lack of image
2. 5253299 - Noise reduction apparatus in an FM stereo tuner
3. 5142959 - Midi control apparatus and midi system
4. 5067157 - Noise reduction apparatus in an FM stereo tuner