Charles Preston
21Patents
5h-index
30Co-inventors
69Inventor score
Filing activity: Aug 30, 1994 → Jan 31, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5510997A | Dynamic forms and envelopes verification system | Performing Operations; Transporting | 22 | Expired |
| US5816773A | Collator apparatus | Performing Operations; Transporting | 13 | Expired |
| US5555701A | Envelope wetting and sealing apparatus | Performing Operations; Transporting | 13 | Expired |
| US8682479B1 | Opportunistic mail document commingling | Physics | 7 | Active |
| US6209860A | Billing statement system | Performing Operations; Transporting | 6 | Expired |
| US5596861A | System and method for establishing an absolute reference point for an envelope inserter cycle | Performing Operations; Transporting | 3 | Expired |
| US10192276B1 | Multiple mail piece assembly and wrapping system | Physics | 3 | Active |
| US5829953A | Billing statement system | Performing Operations; Transporting | 2 | Expired |
| US8805576B1 | Opportunistic mail document commingling | Physics | 2 | Active |
| US5568392A | Document edge marking apparatus | Physics | 2 | Expired |
| US10133970B1 | Bitmap processing of digital documents | Physics | 1 | Active |
| US8172090B1 | Large and small document combination optimization for document sequencing system | Emerging Cross-Sectional Technologies | 1 | Active |
| US11059073B1 | Commingling physical tray boundaries | Physics | 1 | Active |
| US8857624B1 | Large and small document combination optimization for document sequencing system | Emerging Cross-Sectional Technologies | 1 | Active |
| US10460218B2 | Bitmap processing of digital documents | Physics | 1 | Active |
| US11911800B2 | Commingling physical tray boundaries | Physics | 0 | Active |
| US11783149B2 | Bitmap processing of digital documents | Physics | 0 | Active |
| US10810694B2 | Multiple mail piece assembly and wrapping system | Physics | 0 | Active |
| US10832105B2 | Bitmap processing of digital documents | Physics | 0 | Active |
| US11508023B2 | Multiple mail piece assembly and wrapping system | Physics | 0 | Active |
| US8707099B1 | Dynamic cue generator | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.