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53 U.S. Patents 

9,082,322 Label for receiving indicia having variable spectral emissivity values

8,992,105 Printing system ribbon including print transferable circuitry and elements

8,684,416 Label for receiving indicia having variable spectral emissivity values

8,408,602 Label for receiving indicia having variable spectral emissivity values

8,235,298 Systems and methods for reading indicium

7,931,413 Printing system ribbon including print transferable circuitry and elements

7,728,726 Radio frequency identification labels

7,651,031 Systems and methods for reading indicium

7,621,451 Radio frequency indentification labels and systems and methods for making same

7,619,520 Radio frequency indentification labels and systems and methods for making same

7,407,195
Label for receiving indicia having variable spectral emissivity values

7,267.285 Information encoding on surfaces by varying spectral emissivity

7,184,557 Methods and apparatuses for recording and playing back audio signals

7,044,386 Information encoding on surfaces by varying spectral emissivity

6,904,525 Method for preventing counterfeiting of articles of manufacture

6,802,005 Method and system for tracking a person's time at a location

6,715,687  Pen and System for writing encoded lines

6,652,893 Machine and Process for aerating and flavoring water

6,575,362 Secure money order issuing kiosk

6,532,459 System for finding, identifying, tracking, and correcting personal information in diverse databases

6,251,167 Machine and process for removing dissolved gasses from liquids

6,104,809 Apparatus for verifying an identification card

6,039,257 Postage metering system that utilizes secure invisible bar codes for postal verification

5,949,879 Auditable security system for the generation of cryptographically protected digital data

5,932,870 Documents containing a magnetic strip with a bar code affixed thereto

5,929,415 Postage metering refill system that utilizes information contained in information based indicia to audit the franking process

5,861,618 System and method of improving the signal to noise ratio of bar code and indicia scanners that utilize fluorescent inks

5,826,246 Secure postage meter in an ATM application

5,819,239 Method of verifying proper payment of postage

5,768,384 System for identifying authenticating and tracking manufactured articles

5,742,685  Method for verifying an identification card and recording verification of same

5,701,249 Service and usage data collection using a special mail piece

5,693,693 Bar code printing and scanning using wax based invisible fluorescent inks

5,598,477 Apparatus and method for issuing and validating tickets

5,542,971 Bar codes using luminescent invisible inks

5,525,798 Bar code scanner for reading a lower layer luminescent invisible ink that is printed below a upper layer luminescent invisible ink

5,514,860 Document authentication system utilizing a transparent label

5,513,563 Indicia security via variable dot size

5,502,304 Bar code scanner for reading a visible ink and a luminescent invisible ink

5,469,506 Apparatus for verifying an identification card and identifying a person by means of a biometric characteristic

5,426,700 Method and apparatus for verification of classes of documents

5,425,586 Apparatus and method of creating pre-formed images on a thermal ribbon used in a postage dispensing device

5,422,954 Apparatus and method of producing a self printed inspection label

5,420,924 Secure identification card and method and apparatus for producing and authenticating same by comparison of a portion of an image to the whole

5,413,037 Use of encapsulated ink for enhancing postage meter security

5,393,148 Postage dispensing apparatus having a thermal printer and method of using the same

5,388,158 Secure document and method and apparatus for producing and authenticating same

5,384,846 System and apparatus for controlled production of a secure identification card

5,383,732 Thermal printing postage dispensing device having security features and method of using

5,288,994 Image detecting apparatus and method for reading and or verifying the contents of sealed envelopes

4,926,193 Thermal transfer ribbon cartridge including ribbon perforating means

4,899,172 Method and apparatus for perforating indicia on used thermal transfer ribbon within a cassette

4,860,025 Thermal transfer printing process



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