| Patents for D21F 1 - Wet end of machines for making continuous webs of paper (14,078) |
|---|
| 03/13/1990 | US4908103 Rigid base, first and second laminates having hardness differentials |
| 03/07/1990 | CN1007072B Web transfer apparatus |
| 03/07/1990 | CN1007071B Apparatus for assisting transfer of web to drying section |
| 03/07/1990 | CN1007070B Vertical fibre recoverer |
| 03/06/1990 | US4906364 Filter deck assembly sliding seal |
| 03/06/1990 | US4906336 Headbox device for a papermaking machine |
| 03/06/1990 | US4906334 Broke pulping apparatus and reel stand with brake |
| 03/06/1990 | CA1266393A1 Adjustable means for profile correction for a headbox slice |
| 02/28/1990 | EP0356415A2 Backflushing pressure diffuser screens |
| 02/28/1990 | EP0355734A2 Cross-directional distribution of additives in synthetic papers |
| 02/21/1990 | CN1006916B Electromagnetic extended nip press |
| 02/14/1990 | EP0354889A2 A method of controlling microbiological deposits on paper making equipment and paper obtained thereby |
| 02/14/1990 | EP0354741A2 Apparatus for thickening pulp and paper stock |
| 02/07/1990 | EP0353255A1 A headbox. |
| 02/07/1990 | CN2052415U Cylinder machine paper-shaper with clip wire-cloth |
| 02/06/1990 | US4898643 Headbox control apparatus for a papermaking machine |
| 01/31/1990 | EP0352464A1 Arrangement for the measurement of the bending of an elongated element |
| 01/30/1990 | US4897160 Head box for a paper making machine |
| 01/30/1990 | US4897158 Headbox apparatus for a papermaking machine |
| 01/30/1990 | US4896702 Seam construction for papermaking fabrics |
| 01/25/1990 | DE3823966A1 Vorrichtung zum fuehren der siebe einer doppelsiebpartie einer papier- oder kartonmaschine Apparatus for lead of a twin-screened a paper or cardboard machine |
| 01/24/1990 | EP0351535A2 Fabric for paper-making machines |
| 01/23/1990 | US4895624 Turbulence generator made of plastic with ceramic coated flow ducts in the head box of a paper machine |
| 01/23/1990 | US4895623 Meshes, horizontal, compression, depressurization |
| 01/23/1990 | US4895622 Press felt conditioner for neutral and alkaline papermaking systems |
| 01/17/1990 | EP0350827A2 Suction box |
| 01/17/1990 | EP0350673A2 Papermakers double layer type fabrics |
| 01/17/1990 | EP0350574A1 Seaming machine for producing a seam for making a textile web endless. |
| 01/10/1990 | EP0349779A2 Double-layer fabric for use in the wet end section of a papermachine |
| 01/09/1990 | US4892781 Base fabric structures for seamed wet press felts |
| 01/09/1990 | US4892623 Two-speed stepper actuator |
| 01/09/1990 | US4892622 Air curtain traveling with web |
| 01/03/1990 | EP0348398A1 Method and apparatus for spreading pulp to a web. |
| 01/02/1990 | US4891100 Apparatus for retaining a partition foil |
| 12/28/1989 | WO1989012717A1 Papermaker's fabrics |
| 12/26/1989 | US4889625 Filter for concentrating suspensions |
| 12/26/1989 | US4889597 Dialdehyde-crosslinked cellulosic fibers; slurrying, flocculation, setting |
| 12/20/1989 | EP0346519A1 Dewatering unit for Fourdrinier machines |
| 12/20/1989 | CN1038139A Hydraulic headbox of paper or board making machine |
| 12/19/1989 | US4888096 Roll press for removing water from a web of paper using solid grooved roll and compressed air |
| 12/19/1989 | US4888095 Method for extracting water from a paper web in a papermaking machine using a ceramic foam member |
| 12/19/1989 | US4888094 Controlling flow of fiber dispersion over web gives uniform distribution and orientation; preventing transverse flow |
| 12/19/1989 | US4887648 Method for making a multi-layered papermakers fabric with seam |
| 12/19/1989 | US4887362 Method and an apparatus for drying a paper web or the like |
| 12/13/1989 | EP0346174A2 Process and system for controlling the basis weight of a sheet material |
| 12/13/1989 | EP0345643A2 Weft-wear type papermarkers' fabric |
| 12/13/1989 | EP0345287A1 Method and apparatus for dewatering and squeezing material. |
| 12/13/1989 | CN1037940A Active attenuator for attenuation of pressure pulsation in headbox in paper and board machines |
| 12/12/1989 | CA1263821A1 Felt of fabric for use in papermaking machines |
| 12/12/1989 | CA1263820A1 Press for extracting a liquid phase carried in a pulp type material |
| 12/06/1989 | EP0344941A1 Hydraulic headbox of a paper or board making machine |
| 12/06/1989 | EP0344181A1 Multi-ply paper forming fabric with ovate warp yarns in lowermost ply. |
| 12/05/1989 | US4885060 Papermachine headbox profiling bar with fluid discharge orifices along its length |
| 12/05/1989 | US4885059 Edge curling device for Fourdrinier fabric |
| 12/05/1989 | CA1263551A1 Pressure roll for use in calenders or the like |
| 11/30/1989 | WO1989011561A1 Headbox for paper-making machines |
| 11/29/1989 | EP0343711A2 Device for cleaning drier clothes or felts in paper producing plants |
| 11/29/1989 | EP0343393A2 Multiscreen pressure diffuser |
| 11/28/1989 | US4883097 Papermakers wet felts |
| 11/28/1989 | US4883096 Seam design for seamed felts |
| 11/28/1989 | US4882922 Rolling mill roll with rotating shell |
| 11/23/1989 | EP0342684A2 Double layer tissue for the forming section of a paper machine |
| 11/21/1989 | US4881286 Effective diffuser/thickener screen backflushing |
| 11/21/1989 | CA1263045A1 Method for subjecting a sector in a roll to negative pressure as well as a suction roll |
| 11/15/1989 | EP0341913A2 Endless wire for pulp thickener |
| 11/15/1989 | EP0341888A2 Threading of wires |
| 11/14/1989 | US4880500 Stationary ceramic couch device with water spray cleaning nozzles |
| 11/08/1989 | EP0341043A2 Single layer seamed papermakers fabric |
| 11/08/1989 | EP0341042A2 Seam design for seamed felts |
| 11/08/1989 | EP0341041A2 Single layer pin seam fabric having perpendicular seaming loops and method |
| 11/08/1989 | EP0340252A1 Double-screen format |
| 11/08/1989 | CN1037001A Technology for making pasted original paper for offset printing |
| 11/07/1989 | US4879003 Slice lip protector system |
| 11/07/1989 | CA1262669A1 Pin seamed fabric |
| 10/31/1989 | US4877503 Electrodes of movable endless belts to create electrostatic field |
| 10/31/1989 | US4877486 Headbox for paper machine with hollow expanding member for profile bar adjustment |
| 10/25/1989 | EP0256009B1 Scraping strip for a paper machine |
| 10/24/1989 | US4875977 Horizontal twin wire machine with vertically adjustable open roll and deflector blade |
| 10/19/1989 | WO1989009848A1 Dual warp forming fabric |
| 10/18/1989 | EP0195807B1 Headbox system for a paper machine |
| 10/18/1989 | CN1005492B Treatmeat technology of fibreboard waste water in hydro-processing |
| 10/17/1989 | US4874660 Polylaurolactam; durability, nonflattening |
| 10/17/1989 | US4874469 Heated extended nip press with porous roll layers |
| 10/17/1989 | US4874467 Method of controlling cross profile of properties of paper web |
| 10/17/1989 | CA1262329A1 Forming fabric |
| 10/11/1989 | EP0228396B1 Arrangement for the flocculation of flocculable substances, particularly for the purification of effluents from deinking installations for used paper processing |
| 10/11/1989 | EP0185907B1 Process for making a hinge seam for connecting the ends of a woven band together, and apparatus for carrying it out |
| 10/11/1989 | CN1005392B Heated variable crown roll |
| 10/10/1989 | US4872246 Roll with an arched shaft |
| 10/04/1989 | EP0335821A2 An apparatus for forming a web |
| 10/04/1989 | EP0335343A2 Active attenuator for attenuation of the pressure pulsation in the headbox in paper and board machines |
| 10/04/1989 | EP0334899A1 Apparatus for sequentially drying both sides of a paper web. |
| 10/03/1989 | US4871425 Fixation device |
| 10/03/1989 | US4870998 Low stretch papermaking fabric |
| 09/27/1989 | EP0209696B1 Headbox for a paper-making machine |
| 09/26/1989 | CA1261989A1 Dryer fabric having warp strands made of melt- extrudable polyphenylene sulphide |
| 09/26/1989 | CA1261724A1 Cellular structure for the covering of an arced surface, and its manufacture |
| 09/26/1989 | CA1261662A1 Endless wire belt for paper machines or the like |
| 09/26/1989 | CA1261141A1 Dryer section drive arrangement for paper making machines |
| 09/26/1989 | CA1261140A1 Paper making machine dryer section drive |