Davy Process Technology Limited
66Patents
28Active
66Granted
44Portfolio score
Filing activity: Feb 23, 1994 → May 23, 2013 · 13 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7553397B1 | Process | Chemistry; Metallurgy | 168 | Expired |
| US6632330B1 | Process for purification of alkyl alkanoate | Chemistry; Metallurgy | 138 | Expired |
| US6809217B1 | Process for the preparation of ethyl acetate | Chemistry; Metallurgy | 134 | Expired |
| US5536856A | Production of carboxylic acid ester by esterification and apparatus thereof | Performing Operations; Transporting | 78 | Expired |
| US7115670B2 | Fischer-Tropsch synthesis process | Performing Operations; Transporting | 23 | Expired |
| US5841002A | Process for the commercial production of polyhydroxy alcohols and glycols | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7355083B2 | Process | Chemistry; Metallurgy | 17 | Active |
| US7709689B2 | Homogenous process for the hydrogenation of carboxylic acids and derivatives thereof | Emerging Cross-Sectional Technologies | 17 | Expired |
| US7071238B2 | Fischer-tropsch process in the presence of a coolant introduced into the reactor system | Chemistry; Metallurgy | 12 | Expired |
| US6982357B2 | PROCESS FOR THE PREPARATION OF PROPANE-1,3-DIOL BY VAPOR PHASE HYDROGENATION OF 3-HYDROXYPROPANAL, BETA-PROPIOLACTONE, OLIGOMERS OF BETA-PROPIOLACTONE, ESTERS OF 3-HYDROXYPROPANOIC ACID OR MIXTURES THEREOF | Chemistry; Metallurgy | 11 | Expired |
| US7214721B2 | Pre-converter for methanol synthesis | Chemistry; Metallurgy | 10 | Expired |
| US7790775B2 | Process for use in gas phase reactions | Emerging Cross-Sectional Technologies | 9 | Active |
| US6835756B2 | Fischer-tropsch synthesis process | Chemistry; Metallurgy | 8 | Expired |
| US7353847B2 | Method of loading a particulate solid into a vessel | Performing Operations; Transporting | 7 | Expired |
| US6936727B2 | Process for the production of ethers, typically thf | Human Necessities | 7 | Expired |
| US6946580B2 | Hydroformylation process with recycle of active rhodium catalyst | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8722747B2 | Vessel for containing catalyst in a tubular reactor | Performing Operations; Transporting | 4 | Active |
| US7598404B2 | Process for the production of ethers | Chemistry; Metallurgy | 4 | Expired |
| US7037947B2 | Fischer-Tropsch synthesis process carried out on a floatable structure | Chemistry; Metallurgy | 4 | Expired |
| US6903140B2 | Fischer-tropsch process | Chemistry; Metallurgy | 4 | Expired |
| US6844452B2 | Process for the co-production of aliphatic diols and cyclic ethers | Chemistry; Metallurgy | 3 | Expired |
| US7012102B2 | Fischer-tropsch process | Chemistry; Metallurgy | 3 | Expired |
| US8906970B2 | Fischer-tropsch process in a radial reactor | Emerging Cross-Sectional Technologies | 3 | Active |
| US8987341B2 | Process for improving the hydrogen content of a synthesis gas | Chemistry; Metallurgy | 3 | Active |
| US8129548B2 | Process for the purification of 1,4-butanediol | Chemistry; Metallurgy | 3 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.