| 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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| 12/29/1987 | US4715623 Documents having a revealable concealed identifier and the method of making such documents |
| 12/22/1987 | US4714603 Paper coating; treating calcium hydroxide slurry with carbon dioxide |
| 12/08/1987 | US4711671 With substituted cyclic dicarboxylic acid anhydride |
| 12/01/1987 | US4710627 Method and an apparatus for determining the genuineness of a security blank |
| 12/01/1987 | US4710614 Security document using optical fibers and authentication method |
| 12/01/1987 | US4710400 Forming a thin film polypyrrole by coating a monomer on one side of substrate and having an oxidizing agent penetrate from the reverse |
| 11/17/1987 | US4707373 Edible compositions colored with (2-alkoxy-4-sulfonyl-5-alkyphenyl)azo-1-hydroxynaphthalene sulfonic acids |
| 11/05/1987 | WO1987006470A1 An antimicrobially active wet wiper |
| 10/28/1987 | EP0243285A1 Security paper made tamper-proof and/or authenticatable by way of thermochromism, and process for its preparation |
| 10/27/1987 | US4702943 Pattern forming saturator and method |
| 10/21/1987 | EP0242331A2 Azo dyes |
| 10/08/1987 | WO1987006041A1 A method of reading valuable documents; a valuable document; and document reading means |
| 10/07/1987 | EP0240071A2 Package |
| 09/30/1987 | EP0238968A1 Surface-sizing agent for paper |
| 09/30/1987 | CN86101888A Process for treating wet paper with foam |
| 09/23/1987 | EP0238043A2 Security document incoporating a security thread |
| 09/22/1987 | US4695405 Process for quenching fluorescence, and new cationic or amphoteric aromatic nitro compounds |
| 09/16/1987 | EP0236365A1 Method and apparatus for checking the authenticity of documents and documents used therefor. |
| 09/16/1987 | EP0223773A4 Ferrous metal corrosion inhibiting sheet material. |
| 09/15/1987 | CA1226814A1 Pesticidal sheets or containers |
| 09/09/1987 | EP0235893A1 Production of paper and paperboard |
| 09/08/1987 | US4692374 Binding antimicrobial agent in unbonded fibers; drying, curing, bonding |
| 09/08/1987 | US4691940 Printed security with hallmarks |
| 09/01/1987 | US4691044 Reacting sulfur with phenol derivative |
| 09/01/1987 | CA1226278A1 Water-soluble triazine compounds |
| 09/01/1987 | CA1226107A1 High performance papers comprised of fibrils of thermotropic liquid crystal polymers |
| 08/18/1987 | US4687842 Monoazo compounds having an imidazolium-2 group linked through an azo radical to a substituted phenyl group |
| 08/13/1987 | WO1987004664A1 Fire retardant composition |
| 08/12/1987 | EP0232015A1 Pitch control aid |
| 08/12/1987 | EP0231505A1 Antimicrobial agent |
| 08/12/1987 | EP0168415B1 Utilization of salicylic acid esters as perfuming substances, perfuming compositions containing them and new salicylic acid esters |
| 08/05/1987 | EP0230829A1 Paper support, in particular for storing perfumes |
| 08/04/1987 | US4684469 Two component biocidal process |
| 08/04/1987 | US4684440 Method for manufacturing paper products |
| 08/04/1987 | US4684439 Creping adhesives containing polyvinyl alcohol and thermoplastic polyamide resins derived from poly(oxyethylene) diamine |
| 07/22/1987 | EP0229645A1 Process for producing an antifalsification paper with an incorporated security element |
| 07/15/1987 | EP0228710A1 Method for producing active agent-containing laminated paper |
| 06/30/1987 | US4676803 Reactive azo dyestuffs, free from anionic groups and containing a basic group and halogenotriazinyl radical and useful for dyeing cellulose/polyester |
| 06/24/1987 | EP0226408A2 Methods for manufacture of paper products |
| 06/24/1987 | EP0226367A1 Security paper |
| 06/23/1987 | US4675389 Azo dyes |
| 06/23/1987 | US4675388 Polymeric azo compounds containing at least four cationic groups |
| 06/19/1987 | DE3641757A1 Process and device for producing self-adhesive note blocks |
| 06/09/1987 | US4671799 Dye mixtures for paper stock |
| 06/03/1987 | EP0223773A1 Ferrous metal corrosion inhibiting sheet material |
| 06/02/1987 | US4670288 Ascorbic, citric acid, alum |
| 06/02/1987 | US4670183 Method and compositions relating to the activation of fluorescent whitening agents |
| 05/26/1987 | US4668273 Polyamines |
| 05/06/1987 | EP0220941A1 Paper sizing composition |
| 05/05/1987 | US4663239 Fire retardant composition |
| 05/05/1987 | US4662653 Optically diffracting security element |
| 05/05/1987 | US4662403 Glycerol laurate |
| 04/29/1987 | EP0219743A1 Security paper containing vesiculated beads |
| 04/28/1987 | CA1221080A1 Fibrous media containing millimicron-sized particulates |
| 04/21/1987 | US4659431 Cationic sizing agent for paper, and a process for its preparation |
| 04/21/1987 | CA1220739A1 Two component biocidal system |
| 04/15/1987 | EP0218388A1 Novel dispersible active sizing compositions |
| 04/15/1987 | EP0218110A1 Storage stable paper size composition containing ethoxylated lanolin |
| 04/08/1987 | EP0217696A1 Diffusion of an active component from paper by combustion, and pyrotechnical dispersal system using such paper |
| 04/07/1987 | US4656268 Colorfast yellow paper dyes |
| 04/07/1987 | US4655788 Security fibers and other materials made luminescent by a dyeing process, processes for their manufacture and their applications |
| 04/07/1987 | US4655756 Treated non-woven material |
| 04/01/1987 | EP0216387A2 Process for preparing vinyl amine-containing water soluble copolymers and their use as wet and dry strength agents for paper |
| 04/01/1987 | EP0216002A2 Process for beneficiating natural calcite ores |
| 03/31/1987 | US4654384 Basic water-soluble bis-(β-azo-α-naphtholamino)-triazine compounds |
| 03/31/1987 | CA1219730A1 Calcium carbonate, especially natural calcium carbonate |
| 03/26/1987 | WO1987001845A1 Method and apparatus for checking the authenticity of documents and documents used therefor |
| 03/25/1987 | EP0215225A2 Moth-proofing agents and method of making them |
| 03/24/1987 | US4652645 Cationic compounds |
| 03/24/1987 | US4652015 Security paper for currency and banknotes |
| 03/17/1987 | CA1219103A1 Flexible fibrous endothermic sheet material for fire protection |
| 03/12/1987 | WO1987001400A1 An antimicrobially active, non-woven web used in a wet wiper |
| 03/11/1987 | EP0213231A1 Waterproof paper support for photographic layers |
| 03/11/1987 | CN86106279A Dispersible active sizing composition |
| 03/05/1987 | DE3628240A1 Allyl ethers of galactopyranose, process for their preparation and polymerisation and use of the polymers |
| 03/04/1987 | EP0212553A2 Process for dyeing paper |
| 03/03/1987 | US4647675 Rhodamine dyes |
| 03/03/1987 | US4647497 Composite nonwoven sheet |
| 03/03/1987 | US4647409 Copper-phthalocyanine dyestuffs |
| 03/03/1987 | CA1218503A1 Agents and process for the protection of wood and coatings against deterioration by micro-organisms |
| 02/25/1987 | EP0211754A2 Security marking process and material provided with security markings |
| 02/10/1987 | US4642654 Recording method |
| 02/06/1987 | EP0160647A4 Pesticidal sheets or containers. |
| 02/03/1987 | US4640885 Becomes solvent insoluble when exposed to ultraviolet light |
| 01/29/1987 | WO1987000565A1 Paper with improved properties |
| 01/29/1987 | DE3625254A1 Non-flammable paper |
| 01/28/1987 | EP0191758A4 Fire retardant powders and methods. |
| 01/27/1987 | US4639331 Process for making pulverulent ammonium polyphosphates stable to hydrolysis |
| 01/20/1987 | CA1216711A1 Manufacture of paper using copolymers of 2-acrylamido- 2-methylpropane sulfonic acid for increasing rate of dewatering of high mechanical/themomechanical pulp furnishes |
| 01/14/1987 | EP0208573A1 Security document using optical fibres, and authentication process |
| 01/13/1987 | US4636410 Inks, jets, fibers, fillers, surface tension |
| 01/08/1987 | DE3622363A1 Dye mixtures |
| 01/07/1987 | EP0207592A1 Testing polyelectrolytes |
| 01/06/1987 | US4634764 Non-azo and azo compounds containing at least one 4,6-diamino-1-substituted-5-substituted carbamoylpyrid-2-one group |
| 12/30/1986 | US4632730 Method for increasing the absorption rate of paper |
| 12/30/1986 | EP0206414A1 Chemical process for conferring conductor, antistatic and flame-proofing properties to porous materials |
| 12/30/1986 | CA1216092A1 Creping adhesives containing poly 2-ethyl-2-oxazoline |
| 12/30/1986 | CA1215890A1 Method for the production of fibre composite material impregnated with resin |
| 12/23/1986 | CA1215725A1 Process for the production of paper |
| 12/17/1986 | EP0204916A1 High bulk calendered paper containing vesiculated beads |