Inventor

NORWOOD DONALD D

US16 patents

⚠️ This page may combine multiple inventors who share the name “NORWOOD DONALD D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

PHILLIPS PETROLEUM CO

13 patents

US4806513AFeb 21, 1989

Silicon and fluorine-treated alumina containing a chromium catalyst and method of producing same

PHILLIPS PETROLEUM CO136 citations99

US4053436AOct 11, 1977

Spray dried titanium-containing catalyst for stress crack resistant polymer

PHILLIPS PETROLEUM CO120 citations97

US5401820AMar 28, 1995

Olefin polymers prepared by polymerization with treated alumina supported chromium

PHILLIPS PETROLEUM CO86 citations96

US5037911AAug 6, 1991

Polymerization with surface silicated and fluorided alumina supported chromium

PHILLIPS PETROLEUM CO97 citations96

US4596862AJun 24, 1986

Olefin polymerization using chromium on fluorided aluminophosphate

PHILLIPS PETROLEUM CO70 citations95

US4820785AApr 11, 1989

In situ comonomer generation in olefin polymerization

PHILLIPS PETROLEUM CO60 citations94

US4735931AApr 5, 1988

In situ comonomer generation in olefin polymerization

PHILLIPS PETROLEUM CO86 citations94

US4312967AJan 26, 1982

Polymerization catalyst and process

PHILLIPS PETROLEUM CO81 citations94

US4101722AJul 18, 1978

Polymerization process using spray dried titanium-containing catalyst

PHILLIPS PETROLEUM CO11 citations74

US4297445AOct 27, 1981

Continuous production of olefin block copolymers

PHILLIPS PETROLEUM CO18 citations73

US4773565ASep 27, 1988

Rotary valve

PHILLIPS PETROLEUM CO14 citations72

US4767028AAug 30, 1988

Rotary valve

PHILLIPS PETROLEUM CO19 citations72

US4773626ASep 27, 1988

Rotary valve

PHILLIPS PETROLEUM CO2 citations61

NORWOOD DONALD D

3 patents

USRE34476EDec 14, 1993

Hybrid information management system for handwriting and text

NORWOOD DONALD D244 citations98

US5063600ANov 5, 1991

Hybrid information management system for handwriting and text

NORWOOD DONALD D286 citations98

US4281520AAug 4, 1981

Portable cooler for bottled beverages

NORWOOD DONALD D63 citations95