Donald Edward Putzig
47Patents
12h-index
18Co-inventors
78Inventor score
Filing activity: Jan 27, 1986 → Mar 2, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6066714A | Titanium-containing catalyst composition and processes therefor and therewith | Chemistry; Metallurgy | 47 | Expired |
| US6166170A | Esterification catalysts and processes therefor and therewith | Performing Operations; Transporting | 42 | Expired |
| US6080834A | Titanium-containing catalyst composition and processes therefor and therewith | Performing Operations; Transporting | 31 | Expired |
| US6303738A | Esterification process | Chemistry; Metallurgy | 24 | Expired |
| US6541598B2 | Composition comprising titanium and process therewith | Chemistry; Metallurgy | 20 | Expired |
| US6998462B2 | Polyester process | Chemistry; Metallurgy | 20 | Expired |
| US4798902A | Zirconium chelates and their use for cross-linking | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6255442A | Esterification process | Chemistry; Metallurgy | 19 | Expired |
| US8044001B2 | Solid zirconium-based cross-linking agent and use in oil field applications | Emerging Cross-Sectional Technologies | 15 | Active |
| US4883605A | Zirconium chelates and their use for cross-linking | Emerging Cross-Sectional Technologies | 13 | Expired |
| US6075115A | Process for the production of 5-sulfo isophthalate bis-glycolate ester metal salts and oxysulfonated polyesters made therefrom | Chemistry; Metallurgy | 12 | Expired |
| US6774204B1 | Polyester and process therefor | Chemistry; Metallurgy | 12 | Expired |
| US7754660B2 | Process to prepare zirconium-based cross-linker compositions and their use in oil field applications | Chemistry; Metallurgy | 11 | Active |
| US7732383B2 | Process for stabilized zirconium triethanolamine complex and uses in oil field applications | Chemistry; Metallurgy | 11 | Active |
| US6489433B2 | Metal-containing composition and process therewith | Chemistry; Metallurgy | 9 | Expired |
| US4885103A | Cross-linking titanium & zirconium chelates & their use | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4953621A | Organic titanium compositions useful as cross-linkers | Emerging Cross-Sectional Technologies | 8 | Expired |
| US7851417B2 | Process to prepare borozirconate solution and use as cross-linker in hydraulic fracturing fluids | Chemistry; Metallurgy | 8 | Active |
| US7795190B2 | Process to prepare borozirconate solution and use as a cross-linker in hydraulic fracturing fluids | Chemistry; Metallurgy | 8 | Active |
| US7795187B2 | Permeable zone and leak plugging using cross-linking composition comprising zirconium triethanolamine complex | Chemistry; Metallurgy | 6 | Active |
| US4808739A | Cross-linking titanium & zirconium chelates & their use | Chemistry; Metallurgy | 6 | Expired |
| US7795188B2 | Zirconium-base cross-linker compositions and their use in high pH oil field applications | Chemistry; Metallurgy | 6 | Active |
| US7795189B2 | Zirconium-hydroxy alkylated amine-hydroxy carboxylic acid cross-linking composition for use with high pH polymer solutions | Chemistry; Metallurgy | 5 | Active |
| US6255441A | Titanium-containing catalyst composition and processes therefor and therewith | Chemistry; Metallurgy | 5 | Expired |
| US7790657B2 | Process to prepare borozirconate solution and use a cross-linker in hydraulic fracturing fluids | Chemistry; Metallurgy | 5 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.