Average Co-Inventor Count = 4.50
ph-index = 9
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. 3M Innovative Properties Company (9 from 14,087 patents)
9 patents:
1. 8584265 - Head suspension system and headgear with replaceable headband bridge and method of adjusting same
2. 7865968 - Head suspension system and headgear that have an adjustable visor and method of adjusting same
3. D539988 - Welding helmet visor
4. D533313 - Ear portion of a welding helmet
5. D532939 - Top portion of a welding helmet
6. D532560 - Side portion of a welding helmet
7. D526097 - Side portion of a welding helmet
8. D525395 - Welding helmet lens frame
9. D524992 - Pair of welding helmet visor flanges