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Class Information
Number: 250/271
Name: Radiant energy > Coded record and readers; invisible radiant energy type
Description: Subject matter comprising data bearing means containing information in symbolic form and detection means to sense invisible radiation from or modified by the form to produce an electric signal corresponding to the form, and methods of using such means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7164133 |
Delivery device and method for its operation |
Jan. 16, 2007 |
| 7138903 |
Lock module using colored light rays to identify the application of an accurate key |
Nov. 21, 2006 |
| 7095033 |
Multi-sided die with authenticating characteristics and method for authenticating same |
Aug. 22, 2006 |
| 7030371 |
Luminescence characteristics detector |
Apr. 18, 2006 |
| 6903342 |
Banknote acceptor |
Jun. 7, 2005 |
| 6775381 |
Method and apparatus for editing and reading edited invisible encodements on media |
Aug. 10, 2004 |
| 6741336 |
Sensor for authenticity identification of signets on documents |
May. 25, 2004 |
| 6734420 |
Differentiable spectral bar code methods and systems |
May. 11, 2004 |
| 6707042 |
Apparatus for reading codes of thermoluminescence detectors |
Mar. 16, 2004 |
| 6669093 |
Hand-held dataform reader having multiple target area illumination sources for independent reading of superimposed dataforms |
Dec. 30, 2003 |
| 6542622 |
Methods and articles for determining invisible ink print quality |
Apr. 1, 2003 |
| 6384409 |
Optical tracking system |
May. 7, 2002 |
| 6378976 |
Use of an essentially colorless marker to allow evaluation of nozzle health for printing colorless "fixer" agents in multi-part ink-jet images |
Apr. 30, 2002 |
| 6303929 |
Fluorescent substance, fluorescent composition, fluorescent mark carrier and optical reader therefor |
Oct. 16, 2001 |
| 6274873 |
Spectrum analyzer for reading authentication marks |
Aug. 14, 2001 |
| 6259112 |
Apparatus and method for determining imaging quality in a computed radiography system |
Jul. 10, 2001 |
| 6153879 |
Invisible information detecting apparatus |
Nov. 28, 2000 |
| 6061121 |
Device and process for checking sheet articles such as bank notes or securities |
May. 9, 2000 |
| 6042150 |
Playing cards security system |
Mar. 28, 2000 |
| 5959296 |
Scanners for reading near infrared fluorescent marks |
Sep. 28, 1999 |
| 5763891 |
Non-visualized information recording medium and apparatus for detecting the same |
Jun. 9, 1998 |
| 5760961 |
Optical information carrier having diffractive features and diffraction modulation layers |
Jun. 2, 1998 |
| 5724244 |
Microwave oven and a cash register system including the same |
Mar. 3, 1998 |
| 5686725 |
Method for reading of invisible marking |
Nov. 11, 1997 |
| 5617187 |
Image reading apparatus, copying apparatus, image processing apparatus, and image processing method |
Apr. 1, 1997 |
| 5611958 |
Infrared phosphor and material having latent images and optical reading system using said phosphor |
Mar. 18, 1997 |
| 5608225 |
Fluorescent detecting apparatus and method |
Mar. 4, 1997 |
| 5600115 |
Flexible cable with security system for code markings |
Feb. 4, 1997 |
| 5525798 |
Bar code scanner for reading a lower layer luminescent invisible ink that is printed below a upper layer luminescent invisible ink |
Jun. 11, 1996 |
| 5508520 |
Method and apparatus for discriminating printings |
Apr. 16, 1996 |
| 5502304 |
Bar code scanner for reading a visible ink and a luminescent invisible ink |
Mar. 26, 1996 |
| 5497001 |
Flash tube devices |
Mar. 5, 1996 |
| 5474394 |
Printing apparatus |
Dec. 12, 1995 |
| 5471281 |
Image reading apparatus and copying apparatus having means for radiating visible and non-visible light, image processing apparatus having means for discriminating a specific orginal and image |
Nov. 28, 1995 |
| 5463212 |
Latent image forming member and method of manufacturing, latent image reading apparatus and latent image reading system |
Oct. 31, 1995 |
| 5414262 |
Imaging device and method for developing, duplicating and printing graphic media |
May. 9, 1995 |
| 5401960 |
Process for marking an article |
Mar. 28, 1995 |
| 5380992 |
Bar code detection using background-correlated bar criterion for ascertaining the presence of a bar |
Jan. 10, 1995 |
| 5369273 |
Method for labeling an object using laser radiation |
Nov. 29, 1994 |
| 5334836 |
Imaging device having a passive compliant card scanner and a validation sensor |
Aug. 2, 1994 |
| 5326677 |
Optical retrieval apparatus using a tellurium (IV) leuco dye |
Jul. 5, 1994 |
| 5321263 |
Recording target |
Jun. 14, 1994 |
| 5313193 |
Object-marking means, method for making such means and reading device |
May. 17, 1994 |
| 5311017 |
Imaging device and method for developing, duplicating and printing graphic media |
May. 10, 1994 |
| 5302825 |
Franking machine and method of forming franking impression |
Apr. 12, 1994 |
| 5283699 |
Micro-bar code reader system |
Feb. 1, 1994 |
| 5220166 |
Information reading method |
Jun. 15, 1993 |
| 5210411 |
Detection mark and method and apparatus for detecting mark |
May. 11, 1993 |
| 5206496 |
Sub-surface marking |
Apr. 27, 1993 |
| 5196682 |
Infrared optical card having an opaque case for hiding internal components |
Mar. 23, 1993 |
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