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Class Information
Number: 503/218
Name: Record receiver having plural interactive leaves or a colorless color former, method of use, or developer therefor > Having a colorless color-former, developer therefor, or method of use > Identified color-former
Description: Subject matter wherein a substance is named in the claims which changes from a colored form or other state suitable for recording information.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7582405 |
Image recording media and image layers |
Sep. 1, 2009 |
| 7560415 |
Reversible multicolor recording medium and recording method using it |
Jul. 14, 2009 |
| 7538070 |
Thermochromic recording medium |
May. 26, 2009 |
| 7425523 |
Thermal transfer recording material and thermal transfer recording method |
Sep. 16, 2008 |
| 7329630 |
Stabilizers and anti-fade agents for use in infrared sensitive leuco dye compositions |
Feb. 12, 2008 |
| 7279264 |
Dyes and use thereof in thermal imaging members and methods |
Oct. 9, 2007 |
| 7270944 |
Compositions, systems, and methods for imaging |
Sep. 18, 2007 |
| 7172991 |
Integrated CD/DVD recording and labeling |
Feb. 6, 2007 |
| 7146909 |
Image forming material |
Dec. 12, 2006 |
| 7022823 |
Diazonium salt, its synthesizing method and recording material |
Apr. 4, 2006 |
| 6900158 |
High-molecular weight gel and display device |
May. 31, 2005 |
| 6890880 |
Heat-sensitive recording material |
May. 10, 2005 |
| 6846619 |
Dye dispersion liquid and thermosensitive recording material using the same |
Jan. 25, 2005 |
| 6815679 |
Reversible thermal recording material and method of recording image on reversible thermal recording material |
Nov. 9, 2004 |
| 6720287 |
Heat sensitive recording material and microcapsule solution |
Apr. 13, 2004 |
| 6703345 |
Diazonium salt and heat-sensitive recording material |
Mar. 9, 2004 |
| 6607871 |
Image recording medium |
Aug. 19, 2003 |
| 6566302 |
Monophase solid solutions comprising a plurality of color former compounds and process for their preparation |
May. 20, 2003 |
| 6544926 |
Microcapsules having improved printing and efficiency |
Apr. 8, 2003 |
| 6432876 |
Image-recording medium containing self-developing leuco dye |
Aug. 13, 2002 |
| 6391824 |
Process for the preparation of coated continuous sheets to be printed by impact-free heat printers, and sheet thus obtained |
May. 21, 2002 |
| 6348432 |
Heat sensitive coating, recording material and methods of manufacture |
Feb. 19, 2002 |
| 6348433 |
Diazo compound and heat-sensitive recording material |
Feb. 19, 2002 |
| 6310002 |
Record material |
Oct. 30, 2001 |
| 6284706 |
Thermally sensitive recording medium |
Sep. 4, 2001 |
| 6239068 |
Process for obtaining a diffusion resistant lenticular element |
May. 29, 2001 |
| 6221806 |
Diffusion resistant lenticular element |
Apr. 24, 2001 |
| 6214766 |
Security feature for paper products |
Apr. 10, 2001 |
| 6103662 |
Pressure-sensitive copying paper |
Aug. 15, 2000 |
| 6071852 |
Pressure-sensitive record materials |
Jun. 6, 2000 |
| 5970875 |
Pressure-sensitive tamper evident system |
Oct. 26, 1999 |
| 5846901 |
Color-forming compounds and their use in carbonless imaging |
Dec. 8, 1998 |
| 5811367 |
Pressure-sensitive copying material |
Sep. 22, 1998 |
| 5789135 |
Light-and heat-sensitive recording material and recording method by use thereof |
Aug. 4, 1998 |
| 5773170 |
UV-absorbing media bleachable by IR-radiation |
Jun. 30, 1998 |
| 5707778 |
Optical recording medium |
Jan. 13, 1998 |
| 5670446 |
Sultine color-former compounds and their use in cabonless copy paper |
Sep. 23, 1997 |
| 5668080 |
Thermally-responsive record material |
Sep. 16, 1997 |
| 5605874 |
Pressure-sensitive copying material |
Feb. 25, 1997 |
| 5565402 |
Heat sensitive recording material |
Oct. 15, 1996 |
| 5552365 |
Pressure-sensitive recording material which comprises natural oils and/or derivatives thereof |
Sep. 3, 1996 |
| 5527758 |
Direct thermal imaging process with improved tone reproduction |
Jun. 18, 1996 |
| 5426085 |
Yellow color-formers |
Jun. 20, 1995 |
| 5424268 |
Imaging medium and process |
Jun. 13, 1995 |
| 5389489 |
Image-forming material |
Feb. 14, 1995 |
| 5376451 |
Yellow color-formers |
Dec. 27, 1994 |
| 5352650 |
Thermal recording sheet |
Oct. 4, 1994 |
| 5332654 |
Reversible redox-controlled imaging method |
Jul. 26, 1994 |
| 5326677 |
Optical retrieval apparatus using a tellurium (IV) leuco dye |
Jul. 5, 1994 |
| 5298063 |
Novel electrochromic compositions based on diketopyrrolopyrroles |
Mar. 29, 1994 |
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