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Class Information
Number: 162/110
Name: Paper making and fiber liberation > Processes and products > Non-uniform, irregular or configured web or sheet > Watermarking
Description: Processes including a step or redistributing the fibers in the web or sheet or altering their configuration in a limited area of the web or sheet so as to produce a mark or design in the product which is visible when viewed by transmitted light, and the products of such processes.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7427334 |
Method and apparatus for encoding substrates with information |
Sep. 23, 2008 |
| 7399513 |
Paper including watermarks and/or embossing |
Jul. 15, 2008 |
| 7381296 |
Method of forming decorative tissue sheets |
Jun. 3, 2008 |
| 7367592 |
Marking substance and security markings for testing the authenticity of documents |
May. 6, 2008 |
| 7326318 |
Hydraulically entangled nonwoven material and method for making it |
Feb. 5, 2008 |
| 7070678 |
Paper webs having a watermark pattern |
Jul. 4, 2006 |
| 6974623 |
Antifalsification paper provided with applied coding consisting of luminescent mottled fibers |
Dec. 13, 2005 |
| 6926308 |
Toilet paper, paper towel and facial tissue |
Aug. 9, 2005 |
| 6824647 |
Method for marking a sheet of paper and sheet with a watermark |
Nov. 30, 2004 |
| 6630055 |
Coated paper including a pseudo-watermark, and a method of manufacture |
Oct. 7, 2003 |
| 6592636 |
Flow control within a press fabric using batt fiber fusion methods |
Jul. 15, 2003 |
| 6582556 |
Security paper and methods for production thereof |
Jun. 24, 2003 |
| 6531032 |
Security paper |
Mar. 11, 2003 |
| 6451168 |
Method and apparatus for making patterned paper |
Sep. 17, 2002 |
| 6402888 |
Security paper comprising localized areas with reduced thickness and opacity, and method for making same |
Jun. 11, 2002 |
| 6368455 |
Method for making security paper |
Apr. 9, 2002 |
| 6136146 |
Non-through air dried paper web having different basis weights and densities |
Oct. 24, 2000 |
| 6086966 |
Method for authenticating a textile product and a thread and a woven label usable therewith |
Jul. 11, 2000 |
| 6063239 |
Security paper |
May. 16, 2000 |
| 5961432 |
Forgery preventive sheet and method of manufacturing same |
Oct. 5, 1999 |
| 5928471 |
Security features for paper |
Jul. 27, 1999 |
| 5897746 |
Method for equipping papers of value with authenticity features |
Apr. 27, 1999 |
| 5871615 |
Method for the manufacture of security paper |
Feb. 16, 1999 |
| 5766416 |
Method of producing watermark paper |
Jun. 16, 1998 |
| 5405500 |
Method for making sheet materials and security paper |
Apr. 11, 1995 |
| 5399412 |
Uncreped throughdried towels and wipers having high strength and absorbency |
Mar. 21, 1995 |
| 5100512 |
Dandy roll having a twill weave wiremark and related method for papermaking |
Mar. 31, 1992 |
| 4919848 |
Process for the quenching of fluorescence, and new cationic naphthalene-peri-dicarboxylic acid imide derivatives |
Apr. 24, 1990 |
| 4879000 |
Process for determining dimension errors |
Nov. 7, 1989 |
| 4824691 |
Imaged microcapsule-coated paper |
Apr. 25, 1989 |
| 4760239 |
Method of and apparatus for applying a mark to paper and a paper for use in such method |
Jul. 26, 1988 |
| 4720325 |
Method for the manufacture of a material in the form of sheets or a web provided with a watermarklike pattern |
Jan. 19, 1988 |
| 4552617 |
Security features in paper |
Nov. 12, 1985 |
| 4526652 |
Dandy roll for manufacturing paper having simulated oxford cloth watermark and related method for papermaking |
Jul. 2, 1985 |
| 4462866 |
Sheet materials |
Jul. 31, 1984 |
| 3985927 |
Compositions and method for producing a chemical watermark on finished paper products |
Oct. 12, 1976 |
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