HL

Harvey D. Ledbetter

The Dow Chemical: 4 patents #847 of 4,115Top 25%
🗺 Michigan: #22,048 of 86,293 inventorsTop 30%
Overall (All Time): #1,295,906 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5233014 Rapid advancement of molecular weight in polybenzazole oligomer dopes Thomas D. Gregory, Carl W. Hurtig, Kenneth J. Quackenbush, Steven Rosenberg 1993-08-03
5219981 Semi-continuous process for synthesis of polybenzazole polymers Thomas D. Gregory, Carl W. Hurtig, Kenneth J. Quackenbush, Steven Rosenberg 1993-06-15
5194568 Staged polymerization of polybenzazole polymers Thomas D. Gregory, Carl W. Hurtig, Kenneth J. Quackenbush, Steven Rosenberg, Ying H. So 1993-03-16
5089591 Rapid advancement of molecular weight in polybenzazole oligomer dopes Thomas D. Gregory, Carl W. Hurtig, Kenneth J. Quackenbush, Steven Rosenberg 1992-02-18