Average Co-Inventor Count = 1.06
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. Other (11 from 833,002 patents)
2. Alpine Electronics, Inc. (1 from 937 patents)
11 patents:
1. 8208677 - Suspension member for speaker
2. 7561704 - Structure of speaker
3. 7382892 - Evenly elastically deformable damper for speaker
4. 7274796 - Reinforced speaker damper
5. 7184568 - [Speaker]
6. 6810988 - Speaker's damper with lead wire and guide sleeve
7. 6757402 - Knockdown speaker
8. 6732832 - Speaker damper
9. 6724907 - Tweeter support rack structure
10. 6674871 - Positioning device for diaphragm for speakers
11. 6292079 - Coil assembly of speaker