Joseph Broun Powell
123Patents
15h-index
54Co-inventors
89Inventor score
Filing activity: Nov 30, 1989 → Dec 6, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5945570A | Catalyst and process for preparing 1,3-propanediol | Chemistry; Metallurgy | 85 | Expired |
| US5786524A | Process for preparation of 1,3-propanediol via hydrogenation of 3-hydroxypropanal | Chemistry; Metallurgy | 23 | Expired |
| US5463145A | Process for preparing 1,3-propanediol | Chemistry; Metallurgy | 23 | Expired |
| US5105026A | Process for preparing a bisphenol | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5770776A | Process for preparing 1,3-propanediol | Emerging Cross-Sectional Technologies | 20 | Expired |
| US8729324B2 | Biomass conversion systems having integrated heat management and methods for use thereof | Emerging Cross-Sectional Technologies | 19 | Active |
| US6342464B1 | Catalyst and process for preparing 1,3-propanediol | Chemistry; Metallurgy | 18 | Expired |
| US5723389A | Process for preparing alkanediols | Chemistry; Metallurgy | 18 | Expired |
| US5689016A | Cobalt-catalyzed process for preparing alkanediols using a rhodium promoter | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5463146A | Process for preparing 1,3-propanediol | Chemistry; Metallurgy | 18 | Expired |
| US5463144A | Process for preparing 1,3-propanediol | Chemistry; Metallurgy | 17 | Expired |
| US5563302A | Cobalt-catalyzed process for preparing 1,3-propanediol using a lipophilic phosphine oxide promoter | Chemistry; Metallurgy | 16 | Expired |
| US6191321A | Process for preparing 1,3-propanediol from methyl 3-hydroxypropionate | Chemistry; Metallurgy | 16 | Expired |
| US5545767A | Process for preparing 1,3-propanediol | Chemistry; Metallurgy | 15 | Expired |
| US5545765A | Cobalt-catalyzed process for preparing 1,3-propanediol using a lipophilic quaternary arsonium salt promoter | Chemistry; Metallurgy | 15 | Expired |
| US5731478A | Process for preparing alkanediols | Chemistry; Metallurgy | 15 | Expired |
| US5008470A | Process for preparing a bisphenol | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5585528A | Cobalt-catalyzed process for preparing 1,3-propanediol using a lipophilic tertiary amine promoter | Chemistry; Metallurgy | 12 | Expired |
| US5841003A | Process for preparing alkanediols | Chemistry; Metallurgy | 12 | Expired |
| US5545766A | Cobalt-catalyzed process for preparing 1,3-propanediol using a lipophilic bidentate phosphine promotor | Chemistry; Metallurgy | 11 | Expired |
| US6969779B2 | Method for removal of MW176 cyclic acetal formed during the production of 1,3-propanediol | Chemistry; Metallurgy | 11 | Expired |
| US5576471A | Cobalt-catalyzed process for preparing 1,3-propanediol using a lipophilic dihydroxyarene promoter | Chemistry; Metallurgy | 11 | Expired |
| US6576802B2 | One-step production of 1, 3-propanediol from ethylene oxide and syngas with a catalyst with a phospholanoalkane ligand | Performing Operations; Transporting | 10 | Expired |
| US9353478B2 | Biomass treatment for hydrothermal hydrocatalytic conversion | Emerging Cross-Sectional Technologies | 10 | Active |
| US5777182A | Cobalt-catalyzed process for preparing 1,3-propanidiol | Chemistry; Metallurgy | 10 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.