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. Matsushita Electric Industrial Co., Ltd. (3 from 27,375 patents)
3 patents:
1. 5240456 - Set of forms with OMR card for delivering package
2. 5216523 - Small data terminal apparatus with CCD image sensor
3. 4109143 - Optical reader