| Patents for D21H 21 - Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper impregnating or coating material, characterised by its function, form or properties (20,755) |
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| 04/20/1993 | US5203876 Disazo dye for dyeing in blue shades |
| 04/20/1993 | CA1316300C Method for pacifying stickies in paper |
| 04/20/1993 | CA1316298C Precipitated calcium carbonate-cationic starch binder as retention aid system for paper making |
| 04/15/1993 | WO1993006729A1 Antimicrobial-agent mixtures |
| 04/14/1993 | EP0537018A1 Foam control compositions |
| 04/14/1993 | EP0536855A2 Security strip for a security paper for currency & banknotes |
| 04/14/1993 | EP0536580A1 Application of enzymes and flocculants for enhancing the freeness of paper making pulp |
| 04/14/1993 | CN1020292C Insect adhesive paper and its fabricating method |
| 04/13/1993 | US5201944 Size composition for papermaking |
| 04/08/1993 | DE4132772A1 Antimikrobielle wirkstoffgemische Antimicrobial drug mixtures |
| 04/07/1993 | EP0535301A1 Method for the control of biofouling |
| 04/07/1993 | CN2129291Y Two-side adhesive recording paper of wei-qi |
| 04/06/1993 | US5200482 Process for the production of high molecular weight copolymers of diallyl ammonium monomers and acrylamide monomers in solution |
| 04/06/1993 | US5200037 Absorbent structures from mixed furnishes |
| 04/01/1993 | DE4232241A1 Water-soluble polymers prodn. - by suspension (co)polymerisation of N-vinyl-formamide or -acetamide, addn. of hydroxylamine to remove residual monomer, and acid hydrolysis |
| 03/31/1993 | EP0534906A1 Sizing process |
| 03/31/1993 | EP0534903A1 Process for dyeing of paper with diazo dyes |
| 03/31/1993 | CN1070444A Method for manufacturing fly-killing paper |
| 03/30/1993 | US5198453 Glutaraldehyde plus 2-(thiocyanomethlthio)-benzothiazole as a biocide for industrial waters |
| 03/28/1993 | CA2079074A1 Sizing process |
| 03/24/1993 | EP0532930A1 Process for the preparation of aqueous solutions of basic aluminium salts |
| 03/23/1993 | US5196238 Method for forming a cermet porous ceramic compact and heating the metal so that it melts and flows into the pores of the ceramic |
| 03/17/1993 | EP0532329A2 Cigarette |
| 03/17/1993 | EP0531713A1 Antifoams for paper industry based on emulsions of oil in water |
| 03/17/1993 | EP0531685A1 Mineral fillers and pigments containing carbonate |
| 03/17/1993 | CN2128256Y Non-imbibition clean toilet paper |
| 03/16/1993 | US5194120 Production of paper and paper products |
| 03/11/1993 | DE4228572A1 New 2:1 aluminium complex azo dyes with no water solubilising gps. |
| 03/10/1993 | EP0344265B1 Low-density material containing a vegetable filler |
| 03/10/1993 | CN1069649A Absorbent core for use in catamenial products |
| 03/09/1993 | US5192363 Paper sizing compositions |
| 03/04/1993 | DE4128490A1 New cationic thiazole azo dyestuff cpds. - used on polyacrylonitrile or paper or keratinous material, prepd. from methyl amino carbo-methoxy-thiazolyl-acetate and tert. aniline |
| 03/04/1993 | CA2077396A1 Synergistic pitch control process utilizing ammonium zirconium and cationic polymers |
| 03/03/1993 | EP0530059A1 System for the reversibel authentification of a security paper |
| 03/03/1993 | EP0529904A2 Specific dye set for thermal ink-jet printing on plain and coated papers |
| 03/03/1993 | EP0298120B1 Tabular acicular gypsum and method of filling paper |
| 03/03/1993 | CN1069540A Agricultural paper film and processing method thereof |
| 03/02/1993 | US5190318 Document with forgery-prevention means |
| 02/25/1993 | DE4128084A1 Beta-alanine-N,N-di:acetic acid, alkali or ammonium salt complex former in paper mfr. - useful for biodegradable alkaline earth and heavy metal ion complexant in bleaching mechanical wood pulp and printed waste paper de inking |
| 02/25/1993 | DE4127733A1 Graft polymers of natural substances containing saccharide structures or derivatives thereof and ethylenically unsaturated compounds and their use. |
| 02/24/1993 | CN1069305A High efficacy disinfecting film paper |
| 02/23/1993 | US5189142 Aminopolyamide-epichlorohydrin acid salt resin |
| 02/23/1993 | US5188871 Paper carrying starch and iodide salt and acidic solution of iodide salt, on activation produces color |
| 02/23/1993 | US5188667 Tungstic oxide-stannic oxide composite sol and method of preparing the same |
| 02/23/1993 | US5188395 Waterproof recording material having ground patterns and its manufacturing method |
| 02/23/1993 | CA1313869C Imidazolylmethylene-containing triphendioxazine dyes |
| 02/18/1993 | WO1993003223A1 Process for the treatment of water, especially for improving retention during the manufacture of paper or board |
| 02/18/1993 | WO1993003222A1 Wet strength resin composition and method of making same |
| 02/18/1993 | CA2114722A1 Wet strength resin composition and method of making same |
| 02/16/1993 | US5187219 For creping cellulosic webs; tissue manufacturing |
| 02/16/1993 | CA1313672C Nitrogen-containing water-soluble compounds |
| 02/11/1993 | DE4126051A1 Sicherheitsdokument mit eingebettetem sicherheitselement Security document with embedded security element |
| 02/09/1993 | US5185206 Polysilicate microgels as retention/drainage aids in papermaking |
| 02/09/1993 | US5185202 Raw paper containing a cationic acrylamide copolymer coated with a polyolefin; impervious to developer |
| 02/09/1993 | US5185061 Processes for the production of paper and paper board |
| 02/09/1993 | US5185034 Dye set containing Acid yellow 23, Direct red 227, Acid blue 9, Food black 2 |
| 02/04/1993 | WO1993002251A1 Absorbent core for use in catamenial products |
| 02/03/1993 | EP0525993A1 Wallpaper having a polyolefin surface layer |
| 02/03/1993 | EP0525081A1 Flame-proofing compositions |
| 02/03/1993 | EP0236365B1 Method and apparatus for checking the authenticity of documents and documents used therefor |
| 01/28/1993 | DE4124948A1 Continuous process for grafting sec. amino gp.-contg. cpds. with ethyleneimine - by heating mixt. of e.g. polyamido-amine, ethyleneimine and catalyst under pressure, reacting further at up to 170 deg. C, and de-pressurising |
| 01/27/1993 | EP0524220A1 A pulping process using cellulase. |
| 01/27/1993 | EP0399010B1 Paper-like or cardboard-like raw material and process for making it |
| 01/26/1993 | US5182138 Luminescent sheet for stamp and a method for the production thereof |
| 01/26/1993 | US5181988 Method for preventing the discoloration of paper and paper treated to prevent discoloring |
| 01/20/1993 | EP0523230A1 Reinforced films made from water soluble polymers |
| 01/19/1993 | US5180817 Black dyes for cellulose fibers, paper, leather and inks |
| 01/17/1993 | CA2062038A1 Retention and drainage aid for alkaline fine papermaking process |
| 01/13/1993 | CN1067937A Anti-mouldy anti-rubbing packing paper for plane glass and it making method |
| 01/13/1993 | CA2055939A1 Methods of controlling deposition in a paper machine dryer section |
| 01/12/1993 | US5179150 Polyvinyl alcohols in combination with glyoxlated-vinyl amide polymers as yankee dryer adhesive compositions |
| 01/12/1993 | US5178730 Paper making |
| 01/10/1993 | CA2073079A1 Wallpaper |
| 01/07/1993 | WO1993000394A1 Applying a fluoropolymer film to a body |
| 01/07/1993 | WO1993000145A1 Reaction products of triglycerides with polyamines, a method of preparing them, and their use |
| 01/07/1993 | WO1993000144A1 Anti-foaming agents |
| 01/07/1993 | DE4121147A1 Antischaummittel Anti-foaming agent |
| 01/07/1993 | DE4120961A1 Umsetzungsprodukte von triglyceriden mit polyaminen, ein verfahren zu ihrer herstellung und deren verwendung Reaction products of triglycerides with polyamines, a process for their preparation and their use |
| 01/07/1993 | CA2112491A1 Anti-foam agents |
| 01/06/1993 | CN1067692A Deodorizing and cleaning paper towel for refrigerator |
| 01/05/1993 | US5176891 Papermaking |
| 01/05/1993 | US5176796 Avoiding pitch troubles using acylgerol lipase |
| 01/05/1993 | US5176748 Paper sizing |
| 01/05/1993 | US5176405 Security document having a security element embedded therein with visually and machine-testable marks |
| 01/03/1993 | WO1993001353A1 A process for the production of paper |
| 01/03/1993 | WO1993001352A1 A process for the manufacture of paper |
| 12/30/1992 | EP0520060A1 Security paper for bank notes and other documents |
| 12/30/1992 | EP0520059A1 Method for obtaining security paper and security paper obtained by such method |
| 12/23/1992 | WO1992022601A1 Epihalohydrin-based resins having a reduced halogen content |
| 12/23/1992 | EP0518909A1 Water-insoluble azo dyes, their manufacture and use. |
| 12/23/1992 | CN2125607U Toughness gaseous anti-rust paper |
| 12/22/1992 | US5173284 Process for preparation of purified calcium sulfate in an aqueous medium |
| 12/22/1992 | US5173086 Concentrated aqueous solutions of 2-phenylbenzothiazoleazo dyes with mixed cations |
| 12/17/1992 | DE4119116A1 Biologisch leicht eliminierbare entschaeumer fuer waessrige systeme Biologically easily be eliminated defoamer for aqueous systems |
| 12/16/1992 | EP0518740A1 Safety sheet |
| 12/16/1992 | CN1067081A Sepecial paper for exercising in caligraphy with writing brush |
| 12/15/1992 | US5171808 Cross-linked anionic and amphoteric polymeric microparticles |
| 12/15/1992 | US5171783 Emulsion copolymerization in presence of chain tranfer agent to prevent braching and crosslinking |
| 12/15/1992 | US5171782 Invert microlatices useful as flotation and drainage additives and for absorption and retention of aqueous fluids |
| 12/11/1992 | WO1992022369A1 Readily biodegradable anti-foaming agent for aqueous systems |