Weirton Steeel Corporation
70Patents
0Active
70Granted
36Portfolio score
Filing activity: Jun 28, 1977 → Jul 30, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5657603A | Preparing sheet metal and fabricating roofing shingles | Emerging Cross-Sectional Technologies | 45 | Expired |
| US5495654A | Preparing sheet metal and fabricating roofing shingles | Emerging Cross-Sectional Technologies | 44 | Expired |
| US5038956A | Abuse resistant, safety-edge, controlled-opening convenience-feature end closures | Performing Operations; Transporting | 40 | Expired |
| US5014536A | Method and apparatus for drawing sheet metal can stock | Performing Operations; Transporting | 38 | Expired |
| US4804106A | Measures to control opening of full-panel safety-edge, convenience-feature end closures | Performing Operations; Transporting | 36 | Expired |
| US4947579A | Computer operated automatic seedling plant transplanting machine | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4576305A | Sheet metal wall panel and integral opener structure | Performing Operations; Transporting | 24 | Expired |
| US4848623A | Disc removal end wall structure with safety features | Performing Operations; Transporting | 21 | Expired |
| US4584859A | In-line control during draw-redraw of one-piece sheet metal can bodies | Performing Operations; Transporting | 21 | Expired |
| US5252019A | Convenience-feature non-circular end closure with interrupted panel profiling | Performing Operations; Transporting | 21 | Expired |
| US5209099A | Draw-process methods, systems and tooling for fabricating one-piece can bodies | Performing Operations; Transporting | 19 | Expired |
| USD312404S | End closure for container with integral opener | General | 18 | Expired |
| US5347839A | Draw-process methods, systems and tooling for fabricating one-piece can bodies | Performing Operations; Transporting | 17 | Expired |
| US5674633A | Light-gage composite-coated flat-rolled steel manufacture and product | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6628378B1 | Methods and apparatus for aligning rolls | Performing Operations; Transporting | 15 | Expired |
| USD394718S | Roofing panel | General | 14 | Expired |
| US4875597A | Convenience packaging | Performing Operations; Transporting | 14 | Expired |
| USD394719S | Roofing panel | General | 14 | Expired |
| US5941050A | Protecting flat-rolled sheet metal for shipment and storage | Performing Operations; Transporting | 12 | Expired |
| US6305210A | One-piece can bodies for pressure pack beverage cans | Performing Operations; Transporting | 12 | Expired |
| US5692634A | Rigid packaging using gas-permeable membrane | Performing Operations; Transporting | 12 | Expired |
| US5590558A | Draw-processing of can bodies for sanitary can packs | Performing Operations; Transporting | 12 | Expired |
| US5343729A | Fabricating one-piece can bodies with controlled side wall elongation | Performing Operations; Transporting | 11 | Expired |
| USD307720S | Container end closure | General | 11 | Expired |
| US5689992A | Draw-processing of can bodies for sanitary can packs | Performing Operations; Transporting | 10 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.