Bell and Howell, LLC
562Patents
50Active
562Granted
47Portfolio score
Filing activity: Oct 10, 1966 → Jun 10, 2022 · 26 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4492504A | Materials handling system | Performing Operations; Transporting | 208 | Expired |
| US4734865A | Insertion machine with audit trail and command protocol | Performing Operations; Transporting | 145 | Expired |
| US4578718A | Control arrangement and method for video tape recorder | Physics | 128 | Expired |
| US4576578A | Interactive training apparatus | Physics | 119 | Expired |
| US3930889A | Multiple source battery-powered apparatus | Emerging Cross-Sectional Technologies | 115 | Expired |
| US4798543A | Interactive training method and system | Physics | 111 | Expired |
| US5119954A | Multi-pass sorting machine | Emerging Cross-Sectional Technologies | 93 | Expired |
| US4639873A | Insertion machine with postage categorization and selective merchandising | Physics | 89 | Expired |
| US4352200A | Wireless aircraft passenger audio entertainment system | Electricity | 88 | Expired |
| US8520888B2 | Apparatus, method and programmable product for identification of a document with feature analysis | Physics | 68 | Active |
| US4076247A | Moving target assembly and control | Mechanical Engineering; Lighting; Heating | 67 | Expired |
| US8477992B2 | Document processing system control using document feature analysis for identification | Physics | 67 | Active |
| US4210785A | Tape replay system | Physics | 63 | Expired |
| US4268119A | Color-separating optical system | Emerging Cross-Sectional Technologies | 63 | Expired |
| US4802096A | Controlled direction non-contact detection system for automatic guided vehicles | Emerging Cross-Sectional Technologies | 60 | Expired |
| US4379497A | Vehicle collision avoidance system | Performing Operations; Transporting | 55 | Expired |
| US4316196A | Illumination and light gate utilization methods and apparatus | Physics | 54 | Expired |
| US3956701A | Personal paging receiver with swivel clip and distributed antenna | Emerging Cross-Sectional Technologies | 50 | Expired |
| US4307791A | Line follower vehicle with scanning head | Physics | 49 | Expired |
| US4179709A | Video information bandwidth compression | Electricity | 49 | Expired |
| US4959795A | Insertion machine with distributed chargeback | Physics | 47 | Expired |
| US4891088A | Document forwarding system | Emerging Cross-Sectional Technologies | 47 | Expired |
| US4473746A | Multiple head optical scanner | Physics | 44 | Expired |
| US4797830A | Insertion machine with postage categorization and selective merchandising | Physics | 43 | Expired |
| US5142662A | Electronic publishing system | Physics | 42 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.