| Patents for D21H 13 - Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material (4,906) |
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| 06/14/1990 | WO1990006342A1 Composite fiberboard and process of manufacture |
| 06/13/1990 | EP0373137A2 Use of a composition of impregnated mica paper as a covering for building elements, and building elements obtained |
| 06/06/1990 | EP0371957A2 Flame-retardant high-temperature resistant paperlike materials based on thermostable polymers |
| 06/05/1990 | US4931551 Dispersions of chitin and product therefrom |
| 05/29/1990 | US4929687 Polymers and process of making same |
| 05/29/1990 | US4929502 Fibrillated fibers and articles made therefrom |
| 05/29/1990 | US4929308 Pressing, molding, dehydration |
| 05/29/1990 | CA2003221A1 Flame-retardant high-temperature resistant paperlike materials based on polyimide fibers |
| 05/23/1990 | EP0369615A2 Improved thermal insulating, high temperature resistant composite |
| 05/22/1990 | CA1269482A1 Shaped structures in aromatic copolyamides, and process for their preparation |
| 05/22/1990 | CA1269283A1 Non-organic/polymer fiber composite, method of making same and use including dimensionally stable separator |
| 05/17/1990 | WO1990005211A2 Paper-like or cardboard-like raw material and process for making it |
| 05/16/1990 | EP0367989A2 Gas-permeable, liquid-impermeable nonwoven material |
| 05/15/1990 | US4925530 Fillers and papermaking fibers treated with charged polymers separately |
| 05/15/1990 | US4925528 Polymeric surfactant; thickener; antifoam agent; papermaking |
| 05/15/1990 | CA1269091A1 Non-woven activated carbon fabric |
| 05/09/1990 | CN1041981A Gas-permeable, liquid-impermeable nonwoven material |
| 05/07/1990 | CA2001784A1 Paper, cardboard or paperboard-like material and a process for its production |
| 05/03/1990 | WO1990004666A1 Wet-process nonwoven fabric and ultrafine polyester fibers therefor |
| 05/02/1990 | EP0366484A2 Erosion resistant mounting composite for catalytic converter |
| 05/01/1990 | US4921900 Stable solutions of poly(paraphenylene terephthalamide) acid crumb |
| 04/19/1990 | WO1990004066A2 Hydraulically entangled wet laid base sheets for wipers |
| 04/17/1990 | US4917714 Non-woven strong, high strength and improved permeability, chemical resistance, used in removal of particulates from gases |
| 04/10/1990 | US4915117 Thin sheet of ceramics for holding tobacco produces no harmful organic substance with smoke |
| 04/05/1990 | WO1990003262A1 Base composition for the fabrication of a flexible and porous sheet product consisting basically of elastomer powder, sheet product and preparation method |
| 04/03/1990 | US4913774 Reinforced thermoplastic material and process of preparation |
| 03/28/1990 | CN2055291U Microwave discharge-tube input-window by using inorganic fibre paper |
| 03/27/1990 | US4912067 Heat resistance, waterproofing, high tensile strength; mixture of fibers, magnesium and guanidenium fluorhecrtorite |
| 03/27/1990 | US4911789 Glass fibre-based paper |
| 03/20/1990 | US4910150 In blood sample |
| 03/13/1990 | US4908097 Applying N,N-methylenebisacrylamide to fibers, applying alkali, maintaining consistency of fibers, maintaining temperature below boiling point of water, excluding free radical initiators and air from the fibers |
| 03/07/1990 | EP0196317B1 Non-organic/polymer fiber composite, method of making same and use including dimensionally stable separator |
| 03/06/1990 | US4906521 Non-woven fibre product |
| 02/28/1990 | EP0355734A2 Cross-directional distribution of additives in synthetic papers |
| 02/27/1990 | US4904520 Gas-permeable, liquid-impermeable nonwoven material |
| 02/27/1990 | US4904343 Non-woven activated carbon fabric |
| 02/20/1990 | US4902564 Highly absorbent nonwoven fabric |
| 02/15/1990 | DE3908685A1 Paper sheets for production of a postcard for confidential communications, and process for the production thereof |
| 01/31/1990 | EP0352888A2 Filtration fabric produced by wet laid process |
| 01/10/1990 | EP0350213A1 Paper filter element |
| 01/03/1990 | EP0348996A2 Method and apparatus for producing para-aramid pulp and pulp produced thereby |
| 01/03/1990 | CN1006310B New synthetic water-dispersible fiber |
| 01/02/1990 | US4891262 Entangling fibers in a sheet made by papermaking machine using water stream |
| 12/27/1989 | EP0347810A2 Acoustical mineral fiberboard and method of manufacturing same |
| 12/19/1989 | US4888091 Low density nonwoven aramid sheets |
| 12/12/1989 | US4886578 High heat resistant oil-impregnatable electrical insulating board |
| 12/05/1989 | US4885058 Inorganic fibers with organic fibers as binders |
| 12/05/1989 | US4885057 By a concentrator with a rotary filter bed, pressing the slurry, water-washing and dispersing |
| 11/29/1989 | EP0343971A2 Process for making uncured felt |
| 11/23/1989 | EP0342519A2 Process for the production of products based on silicone resin, starting from an inorganic fibrous material |
| 11/15/1989 | EP0341977A2 Composites from wet formed blends of glass and thermoplastic fibers |
| 11/08/1989 | CN1005734B New water-dispersible synthetic fiber |
| 10/31/1989 | US4877484 Flocced 2:1 layered silicates and water-resistant articles made therefrom |
| 10/18/1989 | EP0337296A2 A fibrous composition for absorbent pads, a method for the manufacture of an absorbent material from such a composition, and an absorbent material produced by the method |
| 10/17/1989 | US4874495 Apparatus for producing a fiber aggregate |
| 10/10/1989 | US4873143 Hydrophilic crosslinked and a core of uncrosslinked polymers; no agglutination |
| 10/10/1989 | US4872952 Method for manufacturing a board- or sheet-shaped material with a high proportion of glass or mineral wool fibres |
| 10/05/1989 | WO1989009187A1 Process for preparing calcium sulphate with an elongated crystalline structure, the length and shape factor of which are controlled |
| 10/04/1989 | CN1036060A Paper of manufacturing by wet process and for basic level of cover material |
| 09/27/1989 | EP0334739A1 Process for manufacturing papers and boards from recycled fibres which have been treated with enzymes |
| 09/27/1989 | EP0334292A1 Process for the preparation of calcium sulfate dihydrate with elongated shaped crystals provided with an imposed length and shape factor |
| 09/26/1989 | CA1261557A1 Aqueous slurry process for preparing reinforced polymeric composites |
| 09/26/1989 | CA1261526A1 Wettable olefin polymer fibers |
| 09/26/1989 | CA1261109A1 High density para-aramid papers |
| 09/21/1989 | WO1989008148A3 Process for preparing aqueous suspensions or slurries from cellulose microfibrils, cellulose microfibril aqueous suspension or slurry and its use |
| 09/20/1989 | EP0333300A2 Reinforced polymer articles |
| 09/12/1989 | US4865691 Using polyvinyl alcohol |
| 09/08/1989 | WO1989008148A2 Process for preparing aqueous suspensions or slurries from cellulose microfibrils, cellulose microfibril aqueous suspension or slurry and its use |
| 09/05/1989 | US4863979 Latex compositions useful as binders in composite board having dimensional stability and strength |
| 08/30/1989 | EP0330635A1 Substantially inorganic fibrous material and method for the production thereof |
| 08/29/1989 | US4861428 Reinforced polymer sheet |
| 08/23/1989 | EP0329200A2 Moulded fibre reinforced plastics articles |
| 08/15/1989 | US4857147 Method of composite part fabrication |
| 08/15/1989 | US4856650 Oxygen absorbent package |
| 08/09/1989 | EP0326771A2 Highly absorbent nonwoven fabric |
| 08/02/1989 | EP0326135A1 Carrier fleece for impregnated releasable reagents |
| 08/01/1989 | US4853085 Neutral sized paper for use in the production of gypsum wallboard |
| 08/01/1989 | US4853083 Method of forming beater-saturated sheet using carbonate ion |
| 07/25/1989 | US4851021 Multi-ply composites and sheets of epoxy and flocced 2:1 layered silicates and methods for them |
| 07/11/1989 | US4847354 Shaped structure of aromatic copolyamide from aromatic diamine mixture |
| 07/11/1989 | CA1257054A1 Flocced mineral materials and water-resistant articles materials made therefrom |
| 07/11/1989 | CA1257053A1 Inorganic gels and asbestos-free sheet material made therefrom |
| 06/28/1989 | EP0322287A1 Wet-laid sheet for use as a coating support |
| 06/28/1989 | EP0322169A2 Microporous filaments and fibers, process of making same, and articles made therefrom |
| 06/28/1989 | EP0321583A1 Formed calcium silicate plate and process for its production |
| 06/21/1989 | EP0321237A2 High strength wet-laid nonwoven fabric and process for producing same |
| 06/20/1989 | CA1256009A1 Antistatic laminates containing long carbon fibers |
| 06/06/1989 | US4836875 Method of making an electrically resistive sheet |
| 05/31/1989 | EP0317576A1 Composite materials and method of preparation |
| 05/23/1989 | CA1254424A1 Calender roll and use of a fibrous material for the production thereof |
| 05/17/1989 | EP0316195A2 Polyallylene Sulfide nonwoven fabric |
| 05/10/1989 | EP0315476A1 Process for internally strengthening paper and board products and products resulting therefrom |
| 05/02/1989 | US4826569 Electrostatic orientation |
| 04/18/1989 | US4822452 Polyetherurethane block copolymer thickener |
| 04/04/1989 | CA1251980A1 Composite nonwoven sheet |
| 04/04/1989 | CA1251978A1 Fibrous webs of enhanced bulk and method of manufacturing same |
| 04/04/1989 | CA1251905A1 Sheet type felt |
| 03/08/1989 | EP0305433A1 Method for manufacturing a mineral fibre panel. |
| 03/07/1989 | US4810785 Crosslinked corn bran and utilization in papermaking |
| 03/07/1989 | US4810576 Treated glass fibers and aqueous dispersion and nonwoven mat of the glass fibers |