Average Co-Inventor Count = 3.24
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. Halliburton Energy Services, Inc. (2 from 11,849 patents)
2. Other (1 from 833,002 patents)
3. Institute Francais Du Petrole (1 from 84 patents)
4. Institut Francais Du Pe'trole (2,424 patents)
4 patents:
1. 6776237 - Lightweight well cement compositions and methods
2. 6562122 - Lightweight well cement compositions and methods
3. 6332920 - Slag for cementing a well, in particular an oil well
4. 6065539 - Well cementing method and material containing fine particles