Average Co-Inventor Count = 1.00
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. Imi Marston Limited (15 patents)
2. Chart Heat Exchangers Limited (3 patents)
3. The Secretary of State for Trade and Industry in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland (2 patents)
4. National Engineering & Assessment Group Ltd. (1 patent)
5. John Edward Hesselgreaves (0 patent)
0 patent: