Robert Grubba
15Patents
5h-index
14Co-inventors
59Inventor score
Filing activity: May 21, 1991 → Apr 20, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6441570B1 | Controller for a model toy train set | Emerging Cross-Sectional Technologies | 35 | Expired |
| US6765356B1 | Control and motor arrangement for use in model train | Electricity | 18 | Expired |
| US7215092B2 | Radio-linked, bi-directional control system for model electric trains | Human Necessities | 16 | Expired |
| US6485347B1 | Puffing fan driven smoke unit for a model train | Human Necessities | 11 | Expired |
| US5188173A | Pressure control system and cable guiding device for use in drilling wells | Fixed Constructions | 10 | Expired |
| US7298103B2 | Control and motor arrangement for use in model train | Electricity | 4 | Expired |
| US7307394B1 | Control and motor arrangement for use in model train | Electricity | 4 | Active |
| US8127952B2 | Model train coupler with linear actuator | Human Necessities | 3 | Active |
| US7656110B2 | Control and motor arrangement for use in model train | Electricity | 3 | Active |
| US7211976B2 | Control and motor arrangement for use in model train | Electricity | 3 | Expired |
| US7749040B2 | Smoke production system for model locomotive | Human Necessities | 2 | Active |
| US7634411B2 | Synchronized externally generated sound effects for model trains | Human Necessities | 2 | Active |
| US6186074A | Drive assembly for model train | Human Necessities | 2 | Expired |
| US6616506B1 | Inserted molded traction tire for a model toy train | Human Necessities | 2 | Expired |
| US7880414B2 | Control and motor arrangement for use in model train | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.