Average Co-Inventor Count = 1.54
ph-index = 6
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. (7 from 8,780 patents)
2. Olympus Imaging Corporation (1 from 727 patents)
3. Sanyo Technosound Co., Ltd. (1 from 14 patents)
9 patents:
1. 8315397 - Microphone device and portable recorder comprising same
2. D640720 - Digital camera
3. D634764 - Digital video camera
4. D609689 - Digital voice recorder
5. D609688 - Digital voice recorder
6. 7574273 - Audio recording device
7. D592635 - Digital voice recorder
8. D583797 - Digital voice recorder
9. D487259 - Digital voice recorder