Average Co-Inventor Count = 1.15
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. Peltor Ab (3 from 16 patents)
2. 3m Innovative Properties Company (2 from 14,073 patents)
3. 3m Svenska Aktiebolag (5 patents)
5 patents:
1. D664115 - Ear cup for a headset
2. 8130985 - Ear cup with bone conduction microphone
3. D509323 - Hearing protector
4. D506577 - Ear cap
5. D434191 - Ear protection