Welch Allyn Data Collection, Inc.
25Patents
1Active
25Granted
38Portfolio score
Filing activity: Oct 17, 1997 → Feb 17, 2012
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8559767B2 | Imaging apparatus having imaging assembly | Electricity | 545 | Active |
| US6298176A | Symbol-controlled image data reading system | Physics | 350 | Expired |
| US6722569B2 | Optical reader having a color imager | Electricity | 324 | Expired |
| US6254003A | Optical reader exposure control apparatus comprising illumination level detection circuitry | Physics | 264 | Expired |
| US6045047A | Two-dimensional part reader having a focussing guide | Physics | 251 | Expired |
| US6575367B1 | Image data binarization methods enabling optical reader to read fine print indicia | Physics | 239 | Expired |
| US6164544A | Adjustable illumination system for a barcode scanner | Physics | 235 | Expired |
| US6161760A | Multiple application multiterminal data collection network | Physics | 234 | Expired |
| US6371374B1 | Adjustable illumination system for a barcode scanner | Physics | 231 | Expired |
| US6547139B1 | Method and apparatus for extending operating range of bar code scanner | Physics | 229 | Expired |
| US6585159B1 | Indicia sensor system for optical reader | Physics | 215 | Expired |
| US6298175A | Object sensor system comprising controlled light source | Physics | 208 | Expired |
| US6264105A | Bar code reader configured to read fine print barcode symbols | Physics | 206 | Expired |
| US6601768B2 | Imaging module for optical reader comprising refractive diffuser | Physics | 198 | Expired |
| US6607128B1 | Optical assembly for barcode scanner | Physics | 188 | Expired |
| US6155491A | Lottery game ticket processing apparatus | Human Necessities | 185 | Expired |
| US6578766B1 | Data structure for an optical reader | Physics | 168 | Expired |
| US6969003B2 | Method and apparatus for extending operating range of bar code scanner | Physics | 168 | Expired |
| US6942151B2 | Optical reader having decoding and image capturing functionality | Physics | 165 | Expired |
| US6275388A | Image sensor mounting system | Electricity | 164 | Expired |
| US6186404A | Security document voiding system | Human Necessities | 135 | Expired |
| US6304660A | Apparatuses for processing security documents | Human Necessities | 79 | Expired |
| US6370003B1 | Electrostatic charge resistant instrument system | Electricity | 76 | Expired |
| USD456808S1 | Optical reader | General | 29 | Expired |
| US6572012B1 | Transaction terminal having a protective cover assembly | Physics | 17 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.