Average Co-Inventor Count = 1.50
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. Ta Triumph-adler (2 from 7 patents)
2 patents:
1. D343188 - Combined ribbon cartridge and holder
2. 5092694 - Ribbon cassette for a typewriter or the like