HP

Henry A. Pfeffer

FM Fmc: 12 patents #42 of 1,735Top 3%
ID Intermountain Research & Development: 4 patents #1 of 16Top 7%
PE Peroxychem: 2 patents #8 of 15Top 55%
FI Fritz Industries: 1 patents #14 of 20Top 70%
IP Indigo Technologies Group Pty: 1 patents #2 of 10Top 20%
Overall (All Time): #224,074 of 4,157,543Top 6%
20
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
9018142 Oil-field biocide method utilizing a peracid John M. Rovison, Shurong Huang 2015-04-28
8877149 Combustion flue gas NOx treatment David E. Smith 2014-11-04
8575075 Oil-field viscosity breaker method utilizing a peracid Shurong Huang, John M. Rovison 2013-11-05
8486366 Activation of reactive compound with catalyst Timothy A. Holtz, Rodney John Truce, JoAnn Pacinelli, Luke F. Wilkinson 2013-07-16
8147785 Combustion flue gas NOx treatment David E. Smith 2012-04-03
7998446 Flue gas desulfurization process utilizing hydrogen peroxide William C. Copenhafer 2011-08-16
7947745 Reducing the viscosity of an aqueous fluid Steven B. Laramay, Charles R. George 2011-05-24
6444130 Process for rendering waste from electric furnace production of phosphorus non-hazardous James L. Manganaro, Jay R. Brummer, Bert D. McMunn, Christopher M. Knapp, William M. Copa 2002-09-03
6268191 Enzyme immobilization by imbibing an enzyme solution into dehydrated hydrocolloid gel beads Robert K. Prud'homme, Catherine-Ann Cukras 2001-07-31
5662840 Process for making gel microbeads William R. Thomas, Basil A. Guiliano, Christopher J. Sewall, Stephen Tomko 1997-09-02
5364605 Recovery of cyanide from precious metal tailings Gary E. Wolfe 1994-11-15
5045296 Sodium carbonate perhydrate process Charles L. Adams 1991-09-03
4970058 Soda ash peroxygen carrier William A. Hills 1990-11-13
4966762 Process for manufacturing a soda ash peroxygen carrier William A. Hills 1990-10-30
4781899 Purification of crystallized solids made via continuous crystallization Francis Rauh 1988-11-01
4654204 Production of sodium bicarbonate by reversion of soda-type feed salt William C. Copenhafer, Francis Rauh 1987-03-31
4652054 Solution mining of trona or nahcolite ore with electrodialytically-produced aqueous sodium hydroxide William C. Copenhafer 1987-03-24
4462794 Method of operating a rotary calciner retrofitted to coal-firing Judith N. Fradkin 1984-07-31
4294962 Continuous process for the manufacture of cyanuric acid Elizabeth A. Bagnall, Basil A. Guiliano 1981-10-13
4282359 Purification of cyanuric acid Basil A. Guiliano, Andrew D. Kurtz 1981-08-04