Method for determining surface coverage by materials exhibiting different fluorescent… Grant US-5412219-A United States of America 02 May 1995
Fluorescence method of quantifying hydrocarbons, including crude oil, dispersed in water Grant US-5381002-A United States of America 10 Jan 1995
Method for determining the producibility of a hydrocarbon formation Grant US-4990773-A United States of America 05 Feb 1991