| Patents for D21H 23 - Processes or apparatus for adding material to the pulp or to the paper (8,452) |
|---|
| 04/15/1980 | US4198446 Curl-free dimensional stability |
| 03/18/1980 | US4193841 Latex binder |
| 03/11/1980 | US4192712 Combined breaker size press coater |
| 01/22/1980 | US4184914 Foam coating of paper employing a hydrolyzed protein foaming agent |
| 01/01/1980 | US4181567 Paper manufacture employing filler and acrylamide polymer conglomerates |
| 11/20/1979 | CA1066461A1 Pre-treatment of non-wovens |
| 10/30/1979 | CA1065127A1 Machine for applying liquid to absorbent material |
| 08/28/1979 | CA1061200A1 Coater for both sides of traveling web |
| 08/22/1979 | EP0003481A2 Highly filled sheets and method of preparation thereof |
| 08/14/1979 | CA1060244A1 Method for the manufacture of a mineral fibre sheet |
| 06/12/1979 | US4158076 Pressure drop causes foam to burst releasing treating agent to surface |
| 05/29/1979 | CA1055292A1 Manufacture of paper |
| 04/24/1979 | CA1053088A1 Wax impregnation of corrugated paperboard |
| 04/18/1979 | EP0001539A1 A method for the production of a fibrous mat or sheet |
| 03/20/1979 | CA1050837A1 Cast coating with improved speed and quality |
| 03/06/1979 | CA1049712A1 Discontinuous cellulose fiber treated with plastic polymer and lubricant |
| 02/13/1979 | CA1048321A1 Dense paper and method of manufacturing |
| 02/06/1979 | CA1047848A1 Process and apparatus for the manufacture of flat-shaped articles |
| 01/23/1979 | CA1046815A1 Paper manufacture |
| 01/02/1979 | CA1045431A1 Method of making biaxially oriented nonwoven fabrics |
| 10/17/1978 | CA1040489A1 Method of making electrical coils using patterned dry resin coated sheet insulation |
| 10/03/1978 | US4118273 Incorporation of fine perlite particles in slurry |
| 08/29/1978 | US4110155 Method of manufacturing synthetic resin coated papers |
| 08/22/1978 | US4108110 Apparatus for coating both sides of a travelling web |
| 06/20/1978 | US4096305 Rigid-when-wet paperboard containers and their manufacture |
| 06/20/1978 | US4095557 Apparatus for making electrical coils using patterned dry resin coated sheet insulation |
| 04/25/1978 | US4085701 Apparatus for wax impregnation |
| 04/18/1978 | US4085237 Method and apparatus for manufacturing pressure sensitive copying sheet |
| 04/11/1978 | US4083749 Treating an aqueous pulp slurry containing a cationic neutral sizing agent with an oxidizing agent |
| 04/11/1978 | CA1029156A1 Process and apparatus for the retraction of a non woven web |
| 03/28/1978 | US4081318 Applying foamed aqueous binder to rotating cylindrical transfer surface above web |
| 02/14/1978 | US4073264 Device for impregnating paper |
| 12/20/1977 | US4063531 Coater for both sides of traveling web |
| 09/27/1977 | US4051277 Rigid-when-wet paperboard containers and their manufacture |
| 09/27/1977 | US4050982 Process and apparatus for continuously shrinking a non-woven sheet |
| 09/06/1977 | US4046935 Phenolic resins |
| 08/16/1977 | US4042451 Nitro compounds, amines, phosphorus acids |
| 04/19/1977 | US4018647 Process for the impregnation of a wet fiber web with a heat sensitized foamed latex binder |
| 04/12/1977 | US4017651 Application of latex followed by coagulation and gelation |
| 02/15/1977 | US4008121 Method of curtain coating pigment particles on paper plies |
| 12/28/1976 | US4000343 Substitute textile materials composed of vinyl polymer impregnated creped tissue paper and process of producing same |
| 12/28/1976 | US4000237 Method for producing a soft, absorbent, unitary, laminate-like fibrous web with delaminating strength |
| 09/28/1976 | US3982993 Preparation of a wax containing paper sheet |
| 08/10/1976 | US3974302 Method of making patterned dry resin coated sheet insulation |
| 07/20/1976 | US3970626 Ethylene interpolymer compositions and process |
| 06/29/1976 | US3966543 Cellulase enzyme complex |
| 05/18/1976 | US3958056 Fiberboard carton product |
| 04/27/1976 | US3953638 Multi-ply absorbent wiping product having relatively inextensible center ply bonded to highly extensible outer plies |
| 03/09/1976 | US3943079 Discontinuous cellulose fiber treated with plastic polymer and lubricant |
| 03/02/1976 | US3941902 Sizing |
| 03/02/1976 | US3941634 Method for the preparation of paper containing plastic particles |
| 02/03/1976 | US3936544 Process for the manufacture of flat-shaped articles |