R & D Tool & Engineering Co.
34Patents
21Active
34Granted
46Portfolio score
Filing activity: Dec 1, 1993 → Dec 16, 2020 · 5 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD595581S1 | Bottle base | General | 54 | Expired |
| US6726467B1 | Injection molding nozzle | Performing Operations; Transporting | 20 | Expired |
| US6391244B1 | Air-powered ejection system for preform take out plate assembly | Performing Operations; Transporting | 19 | Expired |
| US5980234A | Blow mold apparatus for minimal gate | Performing Operations; Transporting | 14 | Expired |
| US7381045B2 | Quick change blow mold tooling | Performing Operations; Transporting | 13 | Active |
| US5635227A | Replaceable air cylinder unit and valve gate for injection molding machines | Performing Operations; Transporting | 13 | Expired |
| US5496166A | Highly accurate position adjustment mechanism for the mold sections of an injection stretch blow molding machine | Performing Operations; Transporting | 11 | Expired |
| US5454707A | Non-scuffing, non-sticking blow core for stretch blow molding machines | Performing Operations; Transporting | 10 | Expired |
| US6923638B2 | Apparatus for obtaining balanced flow of hot melt in a distribution manifold | Performing Operations; Transporting | 8 | Expired |
| US6450795B1 | Quick change mounting apparatus at the eject station of an injection stretch blow molding machine | Performing Operations; Transporting | 7 | Expired |
| US7704069B2 | Injection molding apparatus having swiveling nozzles | Performing Operations; Transporting | 5 | Active |
| US8562334B2 | Injection blow molding system with enhanced parison neck mold configuration | Performing Operations; Transporting | 4 | Active |
| US7771189B2 | Injection molding apparatus with replaceable gate insert | Performing Operations; Transporting | 4 | Active |
| US8512625B2 | Injection blow molding system with enhanced heat transfer channel configuration | Performing Operations; Transporting | 3 | Active |
| US7267537B2 | Lock apparatus for the base portion of a blow mold | Performing Operations; Transporting | 3 | Expired |
| US8877117B2 | Injection blow molding system with enhanced parison temperature control | Performing Operations; Transporting | 3 | Active |
| US8523556B2 | Injection blow molding system with enhanced parison body mold configuration | Performing Operations; Transporting | 3 | Active |
| US10189200B2 | Tooling, system, and process for injection stretch blow molded container with integral handle | Performing Operations; Transporting | 3 | Active |
| US8714965B2 | Injection nozzle with enhanced heat transfer characteristics | Performing Operations; Transporting | 3 | Active |
| US6824377B2 | Blow station bottom plug actuating mechanism | Emerging Cross-Sectional Technologies | 2 | Expired |
| US8512028B2 | Injection blow molding system with enhanced supply of heat transfer fluid to parison molds | Performing Operations; Transporting | 2 | Active |
| US8475157B2 | Injection nozzle with enhanced heat transfer characteristics | Performing Operations; Transporting | 2 | Active |
| USD964178S1 | Bottle | General | 2 | Active |
| US6902119B2 | Injection molding distribution manifold having improved uniformity of manifold block temperatures | Performing Operations; Transporting | 2 | Expired |
| US7481644B2 | Universal mounting brackets for attaching a hot injection manifold to the lower die set of an injection blow molding machine | Performing Operations; Transporting | 2 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.