Average Co-Inventor Count = 2.40
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. Leybold Aktiengesellschaft (3 from 393 patents)
2. Heraeus Quarzglas Gmbh & Co Kg (229 patents)
3 patents:
1. 5558751 - Dual cathode sputter coating apparatus
2. 5468362 - Apparatus for treating substrates in a vacuum chamber
3. 5429705 - Apparatus for coating and/or etching substrates in a vacuum chamber