| Patents for D21H 25 - After-treatment of paper not provided for in groups (4,291) |
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| 09/19/1990 | CN1045435A Plasma technique for increasing surface strength of paper |
| 09/13/1990 | DE3907483A1 Smoothing or metering device |
| 09/12/1990 | EP0386436A2 Rational process for the deacidification of books and other paper products without pollution |
| 09/04/1990 | US4954364 Method for coating substrates with UV curable epoxysilicone compositions |
| 08/29/1990 | EP0384582A1 Treatment of a surface by laser energy |
| 08/16/1990 | CA2010113A1 Treatment of a surface by laser energy |
| 08/11/1990 | CA2009621A1 Method and apparatus for environmentally-friendly mass de-acidification of books and other paper products |
| 08/08/1990 | CN1044420A Inverted blade metering unit and method for blade-coating material web |
| 07/31/1990 | CA1272018A1 Treatment of celulosic materials |
| 07/04/1990 | EP0375924A2 Process for producing coated papers and coated cardboards endowed with barrier properties against the migration of water vapour, and so obtained products |
| 06/20/1990 | EP0373974A2 Method of preparation of a highly absorbent nonwoven fabric |
| 06/06/1990 | EP0185742B1 Method for impregnating a plane compressible support material with synthetic resin and plant for implementing such method |
| 05/31/1990 | DE3839564A1 Doctor shaft for the volumetric metering out of coating material |
| 05/29/1990 | US4929474 Method of making high quality extrusion coated paper for quality printing |
| 05/29/1990 | US4929470 Casting drums, particles, paper coating |
| 05/22/1990 | US4927497 Preservative for books |
| 05/22/1990 | US4927495 Polyolefin coating, smoothness |
| 05/16/1990 | EP0368491A2 Receptor sheet with image-bearing non-receptor surface |
| 05/01/1990 | US4921034 Embossed paper having alternating high and low strain regions |
| 04/24/1990 | US4919758 Heat treatment of paper products having starch additives |
| 04/05/1990 | WO1990003466A1 Mass treatment of cellulosic materials |
| 04/04/1990 | CN1040999A Glazing and moisture-proof coating for paper products and its process |
| 04/03/1990 | US4913084 Apparatus useful in devices for controlling the thickness of coating applied to a substrate |
| 03/20/1990 | US4910066 Applying anionic acrylic copolymer and water; drying |
| 03/14/1990 | EP0358313A1 Method for producing an article containing a radiation cross-linked polymer and the article produced thereby |
| 03/13/1990 | US4908229 Method for producing an article containing a radiation cross-linked polymer and the article produced thereby |
| 03/13/1990 | US4907528 Deflection compensating device for a smoothing device for a coating applying unit |
| 02/13/1990 | US4900583 Electrically heating using light source |
| 02/13/1990 | US4899687 Device for coating a web of material traveling around a backing roller |
| 01/31/1990 | EP0352440A2 Apparatus for continuously coating a web led over a counter roll |
| 01/10/1990 | CN1038680A Process for preservation of printed cellulosic materials |
| 01/03/1990 | CN1038475A Multifunctional material for calligraphy and painting and its making technology |
| 12/19/1989 | US4888091 Low density nonwoven aramid sheets |
| 12/19/1989 | US4887545 Air knife |
| 11/02/1989 | WO1989010448A1 Method of making a water-sensitive substrate water-resistant and rigid in the wet state, and composition for carrying out the method |
| 10/25/1989 | EP0338792A2 Embossed paper product |
| 10/18/1989 | CN1036344A Method of in-line production of successive barrier and silicone-coated inexpensive porous and absorbent paper and similar substrates |
| 10/12/1989 | DE3810990A1 Process for producing a creped transfer printing paper |
| 10/11/1989 | EP0336439A2 Foam saturation and release coating of a fibrous substrate |
| 10/10/1989 | US4873273 Thermosetting resin |
| 09/21/1989 | WO1989008555A1 Silicone polymer encapsulated substrates |
| 09/21/1989 | WO1989008554A1 Silicone polymer-internally coated webs |
| 09/21/1989 | WO1989008553A1 Silicone polymer fiber encapsulated webs |
| 09/19/1989 | US4867828 Method of in-line production of successive barrier-and silicone-coated inexpensive porous and absorbent paper and similar substrates, and products produced thereby |
| 09/19/1989 | CA1259747A1 Low density fiber-reinforced plastic composites |
| 09/05/1989 | US4863566 Process for the preservation of printed cellulosic materials |
| 09/05/1989 | US4863287 Waxed bag with wax-free area |
| 08/29/1989 | US4860685 Treatment of cellulosic materials |
| 08/22/1989 | US4859527 Cellulosic nonwoven products of enhanced water and/or solvent resistance by pretreatment of the cellulosic fibers |
| 08/15/1989 | US4856454 Applicator mechanism for coating running webs |
| 07/27/1989 | DE3800669A1 Device for vacuuming dust at the drying cylinder of a paper machine |
| 07/04/1989 | US4844777 (meth)acrylate coating hardened by electron beams |
| 07/04/1989 | US4844764 Concurrent curing of overcoat and adhesive |
| 06/29/1989 | WO1989005833A1 Composite materials, their preparation and articles made therefrom |
| 06/27/1989 | CA1256397A1 Method and apparatus for electron curing on a cooled drum |
| 06/22/1989 | DE3741680A1 Method and device for glazing the surface of a paper web |
| 06/01/1989 | WO1989004890A1 Method and device in on-machine coating-drying of a paper web or equivalent |
| 05/30/1989 | US4834838 Fibrous tape base material |
| 05/10/1989 | EP0315297A1 Method of in-line production of successive barrier and silicone-coated inexpensive porous and absorbent paper and similar substrates, and products produced thereby |
| 05/09/1989 | US4828650 Heat treatment of paper products having milk and other additives |
| 04/11/1989 | CA1252258A1 Method of brown stock washing |
| 04/04/1989 | US4818342 Improving stiffness and strength, rewetting |
| 03/22/1989 | EP0307618A1 Apparatus for coating a web material moving around a counter roll |
| 03/08/1989 | EP0305366A1 Arrangement for drying a running web |
| 02/28/1989 | US4808433 Treatment of archival material |
| 02/15/1989 | EP0303528A1 Hydroentangled disintegratable fabric |
| 02/09/1989 | WO1988010155A3 A coating apparatus |
| 01/17/1989 | US4798574 Method of making a bag with a barrier material |
| 01/10/1989 | US4796557 Device for application with use of web vibration absorber |
| 12/29/1988 | WO1988010155A2 A coating apparatus |
| 12/22/1988 | DE3817973A1 Smoothing device of an application mechanism |
| 12/07/1988 | EP0190354B1 Process for producing release paper |
| 11/17/1988 | WO1988008757A1 Method for treating and/or coating nonwoven cellulosic substrates |
| 11/09/1988 | EP0290194A1 Method of producing cast coated paper |
| 11/09/1988 | EP0289824A2 Apparatus for coating a moving paper or cardboard web |
| 10/25/1988 | US4780336 Doctor blade for paper coater |
| 10/25/1988 | CA1243529A1 Tissue paper |
| 10/18/1988 | US4778711 Paper for receiving toner images in electrophotography |
| 10/18/1988 | US4778694 Method for application with use of web vibration absorber |
| 10/13/1988 | DE3710059A1 Doctor rod |
| 10/05/1988 | EP0285227A1 A process for preserving paper sheets or webs and a device for carrying out that process |
| 10/04/1988 | US4775580 Porous random fiber composites and a method for preparing same |
| 09/22/1988 | WO1988007103A1 Arrangement for drying a running web |
| 09/20/1988 | US4772499 Novel tearable non-woven webs and products employing same |
| 08/24/1988 | EP0279465A2 Fibrous tape base material |
| 08/18/1988 | DE3703834A1 Rollschaberauftragwerk zum auftragen von beschichtungen auf materialbahnen Roll-ductor applicator deposition of coatings on material webs |
| 08/11/1988 | WO1988005698A1 Applicator with rolling scraper for applying coatings on webs of material |
| 08/09/1988 | CA1240218A1 Process for impregnating a planar compressible carrier material with synthetic resin, as well as device for working this process |
| 08/02/1988 | CA1239902A1 Electron beam curing of organic polymer coated substrate with rough surface |
| 07/26/1988 | US4759977 Produced by carbonizing carbon fiber and binder |
| 07/06/1988 | EP0273902A2 Process and apparatus for the conservation treatment of paper |
| 07/05/1988 | US4755421 Web containing wood pulp fibers, short staple length regenerated cellulose fibers; wet strength |
| 06/30/1988 | DE3741128A1 Method of controlling and/or monitoring a web-coating drying process |
| 06/07/1988 | US4749432 Coating, scraping with blade, binding |
| 04/26/1988 | US4740392 Epoxide coating composition and method of forming a coating on a substrate |
| 04/26/1988 | CA1235555A1 Deacidification of library materials |
| 04/12/1988 | CA1235140A1 High charge density, cationic methacrylamide based monomers and their polymers |
| 03/16/1988 | EP0259584A1 Process for accelerating the regeneration of the degree of whiteness of heat-treated papers |
| 02/24/1988 | EP0256059A1 Wet-laid, non-woven, fiber-reinforced composites containing stabilizing pulp |
| 02/09/1988 | US4724158 Treatment of archival material |