Robert McCallum
19Patents
8h-index
26Co-inventors
72Inventor score
Filing activity: Aug 28, 1978 → May 9, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4286149A | Apparatus and method for detection of overlapping objects | Performing Operations; Transporting | 24 | Expired |
| US4679060A | Ionic print cartridge and printer | Performing Operations; Transporting | 17 | Expired |
| US5006869A | Charged particle printer | Performing Operations; Transporting | 12 | Expired |
| US6500367B2 | Method of forming a seamless belt | Performing Operations; Transporting | 11 | Expired |
| US4958172A | Charge transfer imaging cartridge | Physics | 10 | Expired |
| US4999653A | Venetian blinding | Electricity | 10 | Expired |
| US4662300A | Offshore load-handling system | Performing Operations; Transporting | 10 | Expired |
| USD726528S1 | Connector for educational construction kits | General | 8 | Active |
| US4745421A | Ionic print cartridge and printer | Performing Operations; Transporting | 7 | Expired |
| US4890123A | Print cartridge | Performing Operations; Transporting | 6 | Expired |
| US5030975A | Charge transfer imaging cartridge | Performing Operations; Transporting | 6 | Expired |
| USD726529S1 | Connector for educational construction kits | General | 6 | Active |
| US4203675A | Pressure printer | Performing Operations; Transporting | 5 | Expired |
| US10343420B2 | Media sheet transport apparatus and method | Performing Operations; Transporting | 1 | Active |
| US10525745B2 | Electrostatic charging apparatus and method for sheet transport | Performing Operations; Transporting | 0 | Active |
| US9090097B2 | Inkjet printer with selectable simplex and duplex printing | Performing Operations; Transporting | 0 | Active |
| US8794727B2 | Multiple print head printing apparatus and method of operation | Performing Operations; Transporting | 0 | Active |
| US8172152B2 | Method for inkjet printing of E13B magnetic ink character recognition characters and substrate having such characters printed thereon | Physics | 0 | Active |
| US8851642B2 | Ink delivery system for inkjet printheads | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.