DN

Donald D. Norwood

PP Phillips Petroleum: 11 patents #158 of 1,401Top 15%
📍 Bartlesville, OK: #154 of 1,143 inventorsTop 15%
🗺 Oklahoma: #680 of 12,736 inventorsTop 6%
Overall (All Time): #357,891 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
5401820 Olefin polymers prepared by polymerization with treated alumina supported chromium Max P. McDaniel, Paul D. Smith 1995-03-28
RE34476 Hybrid information management system for handwriting and text 1993-12-14
5063600 Hybrid information management system for handwriting and text 1991-11-05
5037911 Polymerization with surface silicated and fluorided alumina supported chromium Max P. McDaniel, Paul D. Smith 1991-08-06
4820785 In situ comonomer generation in olefin polymerization Max P. McDaniel, Douglas D. Klendworth, Eric T. Hsieh, Elizabeth A. Boggs 1989-04-11
4806513 Silicon and fluorine-treated alumina containing a chromium catalyst and method of producing same Max P. McDaniel, Paul D. Smith 1989-02-21
4773626 Rotary valve Raymond G. Rohlfing 1988-09-27
4773565 Rotary valve Raymond G. Rohlfing 1988-09-27
4767028 Rotary valve Raymond G. Rohlfing 1988-08-30
4735931 In situ comonomer generation in olefin polymerization Max P. McDaniel, Douglas D. Klendworth, Eric T. Hsieh, Elizabeth A. Boggs 1988-04-05
4596862 Olefin polymerization using chromium on fluorided aluminophosphate Max P. McDaniel, Emory W. Pitzer, Elizabeth A. Boggs, Fay W. Bailey 1986-06-24
4312967 Polymerization catalyst and process Jackie C. Watts 1982-01-26
4297445 Continuous production of olefin block copolymers James N. Short 1981-10-27
4281520 Portable cooler for bottled beverages 1981-08-04