Average Co-Inventor Count = 2.67
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. Martin Marietta Energy Systems, Inc. (1 from 266 patents)
2. Lockheed Martin Energy Systems, Inc. (1 from 89 patents)
2 patents:
1. 5583434 - Method and apparatus for monitoring armature position in direct-current
2. 5487302 - Method and system for measuring gate valve clearances and seating force