RP

Robert W. Pfeiffer

SE Stone & Webster Engineering: 1 patents #33 of 74Top 45%
Overall (All Time): #584,677 of 4,157,543Top 15%
9
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
D548845 Padded knee brace 2007-08-14
5462717 Processes using fluidized solids and apparatus for carrying out such processes 1995-10-31
5368276 Valve with truncated aperture providing enhanced rangeability and logarithmic flow characteristic 1994-11-29
5205537 Valve with enhanced rangeability and logarithmic flow characteristic 1993-04-27
4756886 Rough cut solids separator Lisbeth T. Pfeiffer 1988-07-12
4664139 Valve especially for controlling particulate solids flow 1987-05-12
4336160 Method and apparatus for cracking residual oils Robert R. Dean, Jean-Louis Mauleon 1982-06-22
4332674 Method and apparatus for cracking residual oils Robert R. Dean, Jean-Louis Mauleon 1982-06-01
4331533 Method and apparatus for cracking residual oils Robert R. Dean, Jean-Louis Mauleon 1982-05-25