Keith E. Smith
31Patents
12h-index
51Co-inventors
84Inventor score
Filing activity: Mar 24, 1987 → Oct 18, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5590181A | Call-processing system and method | Emerging Cross-Sectional Technologies | 189 | Expired |
| US5483587A | System and method for call conferencing | Electricity | 167 | Expired |
| US5646982A | System and method for message delivery | Electricity | 164 | Expired |
| US5586175A | Call-processing system and method | Emerging Cross-Sectional Technologies | 116 | Expired |
| US6016343A | Call-processing system and method | Emerging Cross-Sectional Technologies | 89 | Expired |
| US5546449A | System and method for call conferencing | Electricity | 86 | Expired |
| US6643362B2 | Call-processing system and method | Electricity | 83 | Expired |
| US6279038A | Client interface | Electricity | 75 | Expired |
| US5873099A | System and method for maintaining redundant databases | Emerging Cross-Sectional Technologies | 70 | Expired |
| US5903637A | System and method for call conferencing | Electricity | 55 | Expired |
| US6263372A | Method and apparatus for interfacing two or more applications in a client server | Emerging Cross-Sectional Technologies | 47 | Expired |
| USD826497S1 | Cleaning sponge | General | 23 | Active |
| US4926517A | Sweeper | Fixed Constructions | 10 | Expired |
| US6581326B1 | Telescoping device employing a spray insecticide for use with elevated insect nests | Human Necessities | 6 | Expired |
| US4854002A | Gutter broom with locking mechanism | Human Necessities | 6 | Expired |
| US5542635A | File container assembly including brackets for wall or cart mounting | Performing Operations; Transporting | 6 | Expired |
| USRE38973E1 | Sweeper | General | 5 | Expired |
| US5470030A | Fabric take-up frame for a textile fabric producing machine | Performing Operations; Transporting | 3 | Expired |
| US10309069B1 | Street sweeper | Fixed Constructions | 2 | Active |
| US10662593B1 | Drag box apparatus | Fixed Constructions | 1 | Active |
| US11918540B2 | Cap for spout and modified spout | Human Necessities | 0 | Active |
| US11701970B2 | Systems and methods for controlled traversal of phase breaks | Performing Operations; Transporting | 0 | Active |
| US11871234B2 | Secure vehicle to vehicle PTC communication | Electricity | 0 | Active |
| US10689820B1 | Surface cleaning machine for road construction | Fixed Constructions | 0 | Active |
| US11574261B2 | System and method for preparing a vehicle for a trip | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.