WZ

William C. Ziegenhain

CO Conoco: 5 patents #60 of 638Top 10%
EA E.I. Du Pont De Nemours And: 2 patents #2,942 of 8,010Top 40%
Overall (All Time): #767,514 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5100639 Process for purifying hydrogen fluoride Francisco Jose Freire, Jon Lee Howell, Kaye L. Motz, Craig T. Barker, Eileen G. Edwards 1992-03-31
4954330 Process for purifying hydrogen fluoride 1990-09-04
4458492 Method for the recovery of geothermal energy 1984-07-10
4443634 Removal of impurities Gary L. Horton 1984-04-17
4296057 Method of making alumina fibers 1981-10-20
4267161 Method of making aluminum chlorohydrate 1981-05-12
4254287 Removal of catalyst from ethoxylates by centrifugation R. Tom Jackson, Leroy Rose 1981-03-03