EH

Edward W. Heffern

AM Amoco: 1 patents #610 of 1,251Top 50%
S( Standard Oil Company (Indiana): 1 patents #254 of 576Top 45%
Overall (All Time): #2,344,471 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4690217 Process for water injectivity improvement treatment of water injection wells Davis L. Taggart 1987-09-01
4201682 Method of preparing overbased magnesium sulfonates Albert R. Sabol, Dennis G. Petrille 1980-05-06