Davy McKee Aktiengesellschaft
27Patents
0Active
27Granted
34Portfolio score
Filing activity: Oct 31, 1979 → Feb 23, 1989
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4584419A | Process for the production of butane-1,4-diol | Chemistry; Metallurgy | 43 | Expired |
| US4865820A | Gas mixer and distributor for reactor | Chemistry; Metallurgy | 41 | Expired |
| US4496768A | Process for the production of aldehydes by hydroformylation of alpha-olefins | Performing Operations; Transporting | 28 | Expired |
| US5055273A | Apparatus for processing high viscosity materials | Performing Operations; Transporting | 23 | Expired |
| US4767869A | Process for the production of gamma-butyrolactone | Chemistry; Metallurgy | 16 | Expired |
| US4503018A | Desulfurization of phosphogypsum | Chemistry; Metallurgy | 14 | Expired |
| US4446299A | Melt spinning of synthetic fibers | Textiles; Paper | 14 | Expired |
| US4499261A | Process for the continuous production of polybutylene terephthalate of high molecular weight | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4261692A | Roll press for forming briquettes | Performing Operations; Transporting | 14 | Expired |
| US4513162A | Dehydrogenation process | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4402923A | Process for making phosphoric acid | Chemistry; Metallurgy | 12 | Expired |
| US4940559A | Process for the production of uniform POY filaments | Textiles; Paper | 12 | Expired |
| US4877572A | Process for the production of PBT carpet yarn | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4960915A | Process for the production of linear polyesters, particularly for films and foils | Chemistry; Metallurgy | 11 | Expired |
| US4906130A | Anti-scouring device for a dam stilling basin or approach | Fixed Constructions | 11 | Expired |
| US4437827A | Spinning manifold with serial nozzle blocks | Performing Operations; Transporting | 10 | Expired |
| US4374797A | Process for the production of high strength yarns by spin-stretching and yarns produced by the process, especially from polyamide-6 and polyester filaments | Textiles; Paper | 9 | Expired |
| US4528362A | Method for producing spinnable polyamide from dinitrile with phosphorus ester catalyst | Chemistry; Metallurgy | 8 | Expired |
| US4337224A | Apparatus for conducting the catalytic oxidation of gaseous sulfur compounds to sulfur trioxide | Chemistry; Metallurgy | 8 | Expired |
| US4501725A | Process for the combustion of H.sub.2 S containing gases | Chemistry; Metallurgy | 8 | Expired |
| US4503264A | Process for the manufacture of methyl tert.-butyl ether | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4466574A | Cooling apparatus | Chemistry; Metallurgy | 5 | Expired |
| US4436688A | Process for melt-spinning of synthetic polymers | Textiles; Paper | 4 | Expired |
| US4430163A | Process for the continuous separation of slightly volatile components from a crude phthalic acid anhydride | Chemistry; Metallurgy | 3 | Expired |
| US4881848A | Method of forming an immersed dam foundation and a dam structure thereon | Fixed Constructions | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.