11
Kjell R Andersson, Pavol Barla, Johnny Yrjans: Papermaking process. Eka Nobel, Burns Doane Swecker & Mathis, December 25, 1990: US04980025 (47 worldwide citation)

In a process for making paper from an aqueous paper pulp, especially a pulp containing bleached/unbleached mechanical pulps or unbleached chemical pulps, a combination of chemicals is added for improving drainage and retention. As drainage-and retention-improving aids are added a cationic polyacryla ...


12
Lee J Hesler, Stanley C Park: Aramid papers containing aramid paper pulp. E I Du Pont de Nemours and Company, June 25, 1991: US05026456 (45 worldwide citation)

An aramid paper which has high porosity while exhibiting the usual tensile properties is disclosed. The paper has good saturability and a smooth surface while retaining high break strength.


13
Debort Jean Pierre, Doignie Jean Claude, Fuentes Jean Luc, Pommier Jean Claude: Enzymatic preparation of a pulp for chemical use.. Du Pin Cellulose, May 14, 1986: EP0181249-A1 (45 worldwide citation)

1. A method of treating a bisulphitic paper pulp having a high mean degree of polymerization of approximately 1,100, characterized in that, in order to give it the characteristics of a pulp for chemical purposes, there is caused to act upon the paper pulp an enzymatic preparation on a basis of fungi ...


14
Harold V Green, Thomas J Fox, Anthony M Scallan: Lumen-loaded paper pulp, its production and use. Pulp and Paper Research Institute of Canada, Millen & White, April 9, 1985: US04510020 (45 worldwide citation)

Paper of improved properties is produced from pulp in which filler is selectively loaded within the fiber lumens by agitating a suspension of pulp and filler until the fiber lumens become loaded with filler, separating the residual suspended filler from the loaded fibers and vigorously washing the p ...


15
Dennis M Riggs, Dwayne W Beeson, Billy T Conner: Fuel element composition. R J Reynolds Tobacco Company, September 3, 1996: US05551451 (44 worldwide citation)

The present invention is directed to a composition suitable for making fuel elements for smoking articles, which comprises at least about 50 weight percent, preferably at least about 60 weight percent, and most preferably at least about 70 weight percent powdered elemental carbon, preferably carbon ...


16
Rasmussen Grethe, Mikkelsen Jan Moeller, Schuelein Martin, Patkar Shamkant Anant, Hagen Fred, Hjort Carsten Mailand, Hastrup Sven: A cellulase preparation comprising an endoglucanase enzyme.. Novonordisk, March 17, 1993: EP0531372-A1 (42 worldwide citation)

A cellulase preparation consisting essentially of a homogeneous endoglucanase component which is immunoreactive with an antibody raised against a highly purified SIMILAR 43kD endoglucanase derived from Humicola insolens, DSM 1800, or which is homogeneous to said SIMILAR 43kD endoglucanase, may be em ...


17
Harald Selder: Stain removal apparatus. Escher Wyss G m b H, Kenyon & Kenyon Reilly Carr & Chapin, March 8, 1977: US04011027 (41 worldwide citation)

The stain removal apparatus uses alternating rows of teeth between a rotor and the housing to clean paper pulp during passage of the paper pulp by the teeth. Check members are employed adjacent the teeth of the innermost row of teeth to preclude accumulations of material in front of the teeth. The c ...


18
Jean Luc Fuentes, Michel Robert: Method for treating a paper pulp with an enzyme solution. La Cellulose Du Pin, Oblon Spivak McClelland Maier & Neustadt, May 8, 1990: US04923565 (41 worldwide citation)

An enzyme preparation containing cellulases and/or hemicellulases is reacted on a homogeneous aqueous suspension of paper pulp having a Schopper-Riegler (SR) degree determined in accordance with standard NFQ 50 003 of at least equal to 25. A paper pulp based on recycled fibers is treated.


19
Thomas Ericsson: Particulate oil-absorbing composition to absorb oil. Papyrus Kopparfors, August 27, 1985: US04537877 (41 worldwide citation)

A process for absorbing oil and a particulate oil-absorbing composition are provided, which composition in dust form displays a low explosion hazard and a low flammability, but which after absorption of oil is flammable and entirely consumed when burned, the particles comprising as the major compone ...


20
William Gero, Frank Paskowski: Wave screen plate. Beloit Corporation, Dirk J Veneman, Raymond W Campbell, September 4, 1990: US04954249 (40 worldwide citation)

A paper pulp screening apparatus wherein a modular cylindrically-shaped screen plate is formed of a thin material of uniform thickness bent to form an undulating shape to increase the screening area, and the screen plate is supported by cylindrical-backing members to give the plate strength, with th ...



Click the thumbnails below to visualize the patent trend.