Average Co-Inventor Count = 1.67
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. Spectra-physics Gmbh (1 from 309 patents)
2. Thermo Separation Products, Inc. (1 from 4 patents)
2 patents:
1. 5483843 - Transport apparatus
2. 5039242 - Z-fold paper retainer