DB

Donald F. Birkelbach

The Dow Chemical: 11 patents #260 of 4,115Top 7%
📍 Angleton, TX: #17 of 205 inventorsTop 9%
🗺 Texas: #13,747 of 125,132 inventorsTop 15%
Overall (All Time): #475,457 of 4,157,543Top 15%
11
Patents All Time

Issued Patents All Time

Showing 1–11 of 11 patents

Patent #TitleCo-InventorsDate
4451626 Process for polymerizing alpha-olefins Randall S. Shipley 1984-05-29
4409126 Ultra high efficiency catalyst for polymerizing olefins Randall S. Shipley 1983-10-11
4399053 High efficiency catalyst containing titanium, zirconium and zinc for polymerizing olefins Randall S. Shipley, Kirby Lowery, Jr. 1983-08-16
4380508 Ultra high efficiency catalyst for polymerizing olefins Randall S. Shipley 1983-04-19
4323665 High efficiency catalyst for polymerizing olefins Kirby Lowery, Jr., Randall S. Shipley 1982-04-06
4308369 High efficiency catalyst for polymerizing olefins Randall S. Shipley, Kirby Lowery, Jr. 1981-12-29
4243785 High efficiency catalyst for polymerizing olefins George W. Knight 1981-01-06
4238355 High efficiency catalyst for polymerizing olefins Randall S. Shipley, Kirby Lowery, Jr. 1980-12-09
4224186 High efficiency catalyst for polymerizing olefins Kirby Lowery, Jr., Randall S. Shipley 1980-09-23
4198315 High efficiency catalyst for polymerizing olefins George W. Knight 1980-04-15
4189553 High efficiency catalyst for polymerizing olefins 1980-02-19