Average Co-Inventor Count = 3.00
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. Cebt Co., Ltd. (1 from 10 patents)
1 patent:
1. 7750295 - Extractor for an microcolumn, an alignment method for an extractor aperture to an electron emitter, and a measuring method and an alignment method using thereof