Inventor · San Jose, CA, US

Keith Hall

40Patents
13h-index
63Co-inventors
84Inventor score

Filing activity: Aug 31, 1988 → Mar 23, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
US5898958A Control circuit for delivering water and air to outlet jets in a water-filled pool Human Necessities 82 Expired
US6900321B2 Substituted pyridyl amine complexes, and catalysts Chemistry; Metallurgy 46 Expired
US6713577B2 Substituted pyridyl amine catalysts and processes for polymerizing and polymers Chemistry; Metallurgy 37 Expired
US6750345B2 Substituted pyridyl amine catalysts, complexes and compositions Chemistry; Metallurgy 36 Expired
US6362309B1 Polymerization catalyst ligands, catalytic metal complexes and compositions and processes using and method of making same Chemistry; Metallurgy 31 Expired
US6706829B2 Methods of polymerizing ethylene and styrene copolymers with substituted pyridyl amine catalysts and catalysts therefor Chemistry; Metallurgy 31 Expired
US4916313A Method and apparatus for the determination of isotopic composition Emerging Cross-Sectional Technologies 24 Expired
US7414006B2 Methods for oligomerizing olefins Chemistry; Metallurgy 23 Expired
US6828397B2 Methods of copolymerizing ethylene and isobutylene and polymers made thereby Chemistry; Metallurgy 22 Expired
US7087690B2 Substituted pyridyl amine catalysts and processes for polymerizing crystalline polymers Chemistry; Metallurgy 18 Expired
US4866270A Method and apparatus for the determination of isotopic composition Emerging Cross-Sectional Technologies 16 Expired
US7507337B2 System and method for rapid chromatography with fluid temperature and mobile phase composition control Physics 14 Active
US9156948B2 Iron(II) containing complex and condensation reaction catalysts, methods for preparing the catalysts, and compositions containing the catalysts Performing Operations; Transporting 13 Active
US7425661B2 Methods for oligomerizing olefins Chemistry; Metallurgy 11 Expired
US7018949B2 Substituted pyridyl amine catalysts and processes for polymerizing and polymers Chemistry; Metallurgy 7 Expired
US9228061B2 Zirconium containing complex and condensation reaction catalysts, methods for preparing the catalysts, and compositions containing the catalysts Chemistry; Metallurgy 5 Active
US8084715B2 Method and means for heating and controlling the temperatures in a sauna Physics 5 Active
US7638671B2 Methods of oligomerizing olefins Chemistry; Metallurgy 5 Active
US8212047B2 Methods for preparation of pyridylamines Chemistry; Metallurgy 4 Active
US7638670B2 Methods for oligomerizing olefins Chemistry; Metallurgy 4 Active
US7655191B2 Methods for chemical reactions in a parallel batch reactor Emerging Cross-Sectional Technologies 3 Active
US9012585B2 Zinc containing complex and condensation reaction catalysts, methods for preparing the catalysts, and compositions containing the catalysts Chemistry; Metallurgy 2 Active
US7166470B2 Formation of combinatorial arrays of materials using solution-based methodologies Emerging Cross-Sectional Technologies 2 Expired
US8557933B2 Methods for preparation of pyridylamines and their use in oligomerization reactions Chemistry; Metallurgy 2 Active
US9151067B2 Method of attaching a cabinet assembly to a hot tub Emerging Cross-Sectional Technologies 1 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.