Kortec, Inc.
32Patents
8Active
32Granted
42Portfolio score
Filing activity: Jun 11, 1985 → Mar 14, 2013 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6596213B2 | Method of molding multi-layer polymer plastic articles with control of relative shifting of the core layer | Emerging Cross-Sectional Technologies | 65 | Expired |
| US5914138A | Apparatus for throttle-valving control for the co-extrusion of plastic materials as interior core streams encased by outer and inner streams for molding and the like | Performing Operations; Transporting | 60 | Expired |
| US5730763A | Heat exchanger and apparatus for gasification and/or reforming | Emerging Cross-Sectional Technologies | 30 | Expired |
| US7306446B2 | Co-injection nozzle with improved interior layer termination | Performing Operations; Transporting | 25 | Expired |
| US6908581B2 | Optimized flow to prevent core layer breakthrough | Performing Operations; Transporting | 21 | Expired |
| US7399442B2 | Multilayer molding using temperature adjustment of flow rate in conjunction with shooting pot technology | Performing Operations; Transporting | 19 | Expired |
| US7517480B2 | Automatic process control for a multilayer injection molding apparatus | Performing Operations; Transporting | 17 | Active |
| US6187241A | Method of throttle-valving control for the co-extrusion of plastic materials | Performing Operations; Transporting | 17 | Expired |
| US4852858A | Charging material preheater for preheating charging material for a metallurgical smelting unit | Emerging Cross-Sectional Technologies | 14 | Expired |
| US8801991B2 | Heat-seal failure prevention method and article | Emerging Cross-Sectional Technologies | 13 | Active |
| US8491290B2 | Apparatus for producing non-symmetric multiple layer injection molded products | Emerging Cross-Sectional Technologies | 11 | Active |
| US5580362A | Process for gasification and/or reforming | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6649101B2 | Method for using a sprue to reduce the size of a core layer hole in an injection molding process by terminating an injection stream within the sprue | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4586897A | Installation including a heating furnace for continuous castings, which are cut to length, from a continuous casting installation | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US9227349B2 | Method of molding a multi-layer article | Emerging Cross-Sectional Technologies | 6 | Active |
| US4881972A | Process for feeding heat energy into a molten metal bath | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5201941A | Process for introducing additive substances which are capable of flow into a metallurgical vessel and a vessel for that process | Emerging Cross-Sectional Technologies | 5 | Expired |
| US8435434B1 | Non-symmetric multiple layer injection molded products and methods | Emerging Cross-Sectional Technologies | 5 | Active |
| US9221204B2 | Techniques to mold parts with injection-formed aperture in gate area | Emerging Cross-Sectional Technologies | 5 | Active |
| US5371759A | D.C. furnace with a hearth electrode, hearth electrode and electrode block, as well as process for operating said furnace | Emerging Cross-Sectional Technologies | 5 | Expired |
| US4949940A | Charging arrangement for shaft furnaces, in particular blast furnaces | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US9409333B2 | Methods of molding multi-layer polymeric articles having control over the breakthrough of the core layer | Emerging Cross-Sectional Technologies | 4 | Active |
| US4736930A | Closure apparatus for a tap hole | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US9114906B2 | Non-symmetric multiple layer injection molded products and methods | Emerging Cross-Sectional Technologies | 3 | Active |
| US5403378A | Method and apparatus for protecting an injection device disposed in a hot blast conduit of a blast furnace | Chemistry; Metallurgy | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.