Average Co-Inventor Count = 3.11
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. Sport Maska Inc. (2 from 188 patents)
2. Quabaug Corporation (1 from 27 patents)
3. Der-Tex Corporation (1 from 1 patent)
4 patents:
1. D402327 - Boot design for a skate
2. D390345 - Sole for a boot
3. D351713 - Trekking sandal
4. D331488 - Tread surface and periphery of a footwear unit sole