Inventor
ZELLERS DALE A
US19 patents
⚠️ This page may combine multiple inventors who share the name “ZELLERS DALE A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHEVRON PHILLIPS CHEMICAL CO
12 patentsUS7014821B2Mar 21, 2006
Pumping apparatus for slurry polymerization in loop reactors
CHEVRON PHILLIPS CHEMICAL CO50 citations95
US8569433B2Oct 29, 2013
Energy efficient polyolefin process
CHEVRON PHILLIPS CHEMICAL CO10 citations92
US8017701B2Sep 13, 2011
Energy efficient polyolefin process
CHEVRON PHILLIPS CHEMICAL CO22 citations92
US8354063B2Jan 15, 2013
Pumping apparatus and process for polymerization in loop reactors
CHEVRON PHILLIPS CHEMICAL CO15 citations91
US7736597B2Jun 15, 2010
Pumping apparatus and process for polymerization in loop reactors
CHEVRON PHILLIPS CHEMICAL CO13 citations91
US7015289B2Mar 21, 2006
Process and apparatus for reducing take-off valve plugging in a polymerization process
CHEVRON PHILLIPS CHEMICAL CO30 citations91
US7615596B2Nov 10, 2009
Multiple component feed methods and systems
CHEVRON PHILLIPS CHEMICAL CO38 citations89
US9221920B2Dec 29, 2015
Energy efficient polyolefin process
CHEVRON PHILLIPS CHEMICAL CO4 citations84
US7179426B2Feb 20, 2007
Large catalyst activator
CHEVRON PHILLIPS CHEMICAL CO18 citations84
US7645841B2Jan 12, 2010
Method and system to reduce polymerization reactor fouling
CHEVRON PHILLIPS CHEMICAL CO18 citations82
US8765884B2Jul 1, 2014
Energy efficient polyolefin process
CHEVRON PHILLIPS CHEMICAL CO3 citations73
US9266974B2Feb 23, 2016
Pumping apparatus and process for polymerization in loop reactors
CHEVRON PHILLIPS CHEMICAL CO0 citations50
PHILLIPS PETROLEUM CO
3 patentsUS4186061AJan 29, 1980
Fractionation of methyl-mercaptan reactor effluent
PHILLIPS PETROLEUM CO7 citations65
US6435856B1Aug 20, 2002
Blow molding apparatus with fixedly positioned pin and reciprocating sleeve
PHILLIPS PETROLEUM CO5 citations56
US6605247B2Aug 12, 2003
Blow molding process
PHILLIPS PETROLEUM CO1 citations46