Average Co-Inventor Count = 11.00
ph-index = 1
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 (1 from 14,059 patents)
2. Minnesota Mining and Manufacturing Company (1 from 7,865 patents)
2 patents:
1. 6167933 - Apparatus and method for automatically inserting markers into books
2. 5843272 - Apparatus for automatically inserting markers into books