Average Co-Inventor Count = 2.00
ph-index = 3
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. Sharp Kabushiki Kaisha Corporation (3 from 25,543 patents)
3 patents:
1. 4691283 - Automatic registration in an electronic cash register
2. 4638435 - Electronic cash register having direct price look-up function
3. 4425619 - Selective read out of one hour transaction data in an electronic cash