Average Co-Inventor Count = 1.71
ph-index = 2
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. R.r. Donnelley and Sons Company (2 from 293 patents)
2. Distribution Muralex Inc. (1 from 1 patent)
3 patents:
1. 5860650 - Three dimensional puzzle
2. 5613417 - Apparatus and method for forming a groove in a board
3. 5381890 - Convertible package/shelf organizer