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Class Information
Number: 283/93
Name: Printed matter > Having revealable concealed information, fraud preventer or detector, use preventer or detector, or identifier > Utilizing electromagnetic radiation > Having dot pattern
Description: Subject matter wherein the printed matter is provided with structure in the form of a specific arrangement of a plurality of small geometric marks generally made by an imprinting process.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5340159 |
Varying tone security document |
Aug. 23, 1994 |
| 5297815 |
Security printed documents |
Mar. 29, 1994 |
| 5241166 |
Low resolution target acquisition |
Aug. 31, 1993 |
| 5227815 |
Color registration test pattern |
Jul. 13, 1993 |
| 5197765 |
Varying tone securing document |
Mar. 30, 1993 |
| 5193853 |
Nonreplicable document and method for making same |
Mar. 16, 1993 |
| 5193854 |
Tamper-resistant article and method of authenticating the same |
Mar. 16, 1993 |
| 5189292 |
Finder pattern for optically encoded machine readable symbols |
Feb. 23, 1993 |
| 5171040 |
Copy-invalidating document |
Dec. 15, 1992 |
| 5153418 |
Multiple resolution machine readable symbols |
Oct. 6, 1992 |
| 5149140 |
Security, information document |
Sep. 22, 1992 |
| 5128779 |
Non-continuous holograms, methods of making them and articles incorporating them |
Jul. 7, 1992 |
| 5123352 |
Bar code printing plate and method |
Jun. 23, 1992 |
| 5093184 |
Security paper with metallic patterned elongated security element |
Mar. 3, 1992 |
| 5078428 |
Copy-proof sheet |
Jan. 7, 1992 |
| 5044707 |
Holograms with discontinuous metallization including alpha-numeric shapes |
Sep. 3, 1991 |
| 5018767 |
Counterfeit protected document |
May. 28, 1991 |
| 4944533 |
Forging-by-copying-proof prints |
Jul. 31, 1990 |
| 4891666 |
Copy indicator for a document |
Jan. 2, 1990 |
| 4813330 |
Coded card for use in a melody playing apparatus |
Mar. 21, 1989 |
| 4790566 |
Identity document difficult to falsify and a process for manufacturing such a document |
Dec. 13, 1988 |
| 4780397 |
Process for preparing film positive sheets for forging-by-copying-proof prints and prints therefrom |
Oct. 25, 1988 |
| 4708920 |
Microlens sheet containing directional half-tone images and method for making the same |
Nov. 24, 1987 |
| 4692394 |
Method of forming a personal information card |
Sep. 8, 1987 |
| 4684593 |
Secure and self-verifiable image |
Aug. 4, 1987 |
| 4668597 |
Dormant tone imaging |
May. 26, 1987 |
| 4632430 |
Secure and self-verifiable image |
Dec. 30, 1986 |
| 4627819 |
Teaching or amusement apparatus |
Dec. 9, 1986 |
| 4604065 |
Teaching or amusement apparatus |
Aug. 5, 1986 |
| 4596409 |
Identification card and method of producing it |
Jun. 24, 1986 |
| 4582346 |
Document security system |
Apr. 15, 1986 |
| 4579370 |
Multi-tone cancellation phrase and background |
Apr. 1, 1986 |
| 4464448 |
Method of producing an identity document |
Aug. 7, 1984 |
| 4420175 |
Color copy resistant document using irregular outline letters in a multi-void background |
Dec. 13, 1983 |
| 4389063 |
Reusable tamper-indicating security seal |
Jun. 21, 1983 |
| 4360728 |
Banking card for automatic teller machines and the like |
Nov. 23, 1982 |
| 4351547 |
Security document and method for making same using an alternating dot pattern |
Sep. 28, 1982 |
| 4341404 |
Security document using a variable dot screen |
Jul. 27, 1982 |
| 4325981 |
Method of preventing color accurate reproductions using color photocopiers and the like |
Apr. 20, 1982 |
| 4310180 |
Protected document and method of making same |
Jan. 12, 1982 |
| 4265469 |
Protected document and method of making same |
May. 5, 1981 |
| 4234214 |
Document carrying a legible code, and method and apparatus for producing same |
Nov. 18, 1980 |
| 4227720 |
Protected document |
Oct. 14, 1980 |
| 4210346 |
Protected document bearing watermark and method of making |
Jul. 1, 1980 |
| 4176859 |
Non-counterfeitable documents |
Dec. 4, 1979 |
| 4175774 |
Non-copying printed document and method of printing same |
Nov. 27, 1979 |
| 4173082 |
Paper for teaching writing skills |
Nov. 6, 1979 |
| 4168088 |
Protected document and method of making the same |
Sep. 18, 1979 |
| 4040353 |
Process for coloring surfaces |
Aug. 9, 1977 |
| 4039066 |
Forgery-resistant impact printing with matrix printer |
Aug. 2, 1977 |
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