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Class Information
Number: 162/50
Name: Paper making and fiber liberation > Processes of chemical liberation, recovery or purification of natural cellulose or fibrous material > Utilizing electrical or radiant energy
Description: Processes in which electrical or radiant energy is directly applied to fibrous material.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7510625 |
Device and method of using explosive forces in a contained environment |
Mar. 31, 2009 |
| 7390669 |
Simultaneous and rapid determination of multiple component concentrations in a Kraft liquor process stream |
Jun. 24, 2008 |
| 7294233 |
System and method for altering the tack of materials using an electrohydraulic discharge |
Nov. 13, 2007 |
| 7267744 |
Pulp treatment and process |
Sep. 11, 2007 |
| 7147755 |
Ultrasonic transducer system |
Dec. 12, 2006 |
| 7056418 |
Cooking method for pulp |
Jun. 6, 2006 |
| 6837971 |
Device and method of using explosive forces in a contained liquid environment |
Jan. 4, 2005 |
| 6736904 |
Method and apparatus for the generation of ultrasonic energy fields within circular structures containing a liquid |
May. 18, 2004 |
| 6572733 |
System and method for altering characteristics of materials using an electrohydraulic discharge |
Jun. 3, 2003 |
| 6511578 |
Bleaching and delignifying cellulosic pulp using caroate/caro's acid solution |
Jan. 28, 2003 |
| 6334930 |
Measurement device for quantitatively detecting constituents of a pulp/fluid mixture |
Jan. 1, 2002 |
| 6319358 |
Electrolytic causticizing of smelt from a kraft recovery furnace |
Nov. 20, 2001 |
| 6319359 |
Process for quantitatively detecting constituents of a pulp/fluid mixture |
Nov. 20, 2001 |
| 6254726 |
Process and apparatus for detecting moisture content in a supported fibrous web |
Jul. 3, 2001 |
| 6176970 |
Device and method of using explosive forces in a contained liquid environment |
Jan. 23, 2001 |
| 5961803 |
Leaching process |
Oct. 5, 1999 |
| 5843316 |
Method of separating sodium hydroxide from white liquor or polysulfide liquor using diffusion dialysis |
Dec. 1, 1998 |
| 5792315 |
Purifying aqueous effluent from a pulp mill using electro chemical membrane device |
Aug. 11, 1998 |
| 5770010 |
Pulping process employing nascent oxygen |
Jun. 23, 1998 |
| 5628874 |
Reduction of chloride in pulping chemical recovery systems |
May. 13, 1997 |
| 5595628 |
Production of pulp by the soda-anthraquinone process (SAP) with recovery of the cooking chemicals |
Jan. 21, 1997 |
| 5547542 |
Process for purification and recycle of solutions |
Aug. 20, 1996 |
| 5439557 |
Method of recovering energy and chemicals from a spent liquor using low frequency sound in a recovery boiler |
Aug. 8, 1995 |
| 5370771 |
Process for recovering energy and chemicals from spent liquor using low frequency sound |
Dec. 6, 1994 |
| 5238538 |
Method for deinking recycled fiber by applying direct current electric field |
Aug. 24, 1993 |
| 5196069 |
Apparatus and method for cellulose processing using microwave pretreatment |
Mar. 23, 1993 |
| 5061343 |
Recovery of NaOH and other values from spent liquors and bleach plant effluents |
Oct. 29, 1991 |
| 4995943 |
Pretreatment of cellulosic material with carbon dioxide |
Feb. 26, 1991 |
| 4933292 |
Method for controlling and measuring cellulose digestion |
Jun. 12, 1990 |
| 4869784 |
Controlling water input to pulp washing system based on measurements on reduced dimension stream |
Sep. 26, 1989 |
| 4840704 |
Controlling characteristics of a pulp mat on a pulp washing surface |
Jun. 20, 1989 |
| 4826566 |
Rapid disolution of lignin and other non-carbohydrates from ligno-cellulosic materials impregnated with a reaction product of triethyleneglycol and an organic acid |
May. 2, 1989 |
| RE32825 |
Process for the electrochemical reductive bleaching of lignocellulosic pulp |
Jan. 10, 1989 |
| 4596630 |
Process for the electrochemical reductive bleaching of lignocellulosic pulp |
Jun. 24, 1986 |
| 4576609 |
Process for the treatment of cellulosic materials with oxidizing agents and microwaves |
Mar. 18, 1986 |
| 4544596 |
Stabilized absorbent structure containing non-delignified wood pulp fibers |
Oct. 1, 1985 |
| 4451331 |
Process and apparatus for producing pulp |
May. 29, 1984 |
| 4327174 |
Method of preparing a carrier material for photography |
Apr. 27, 1982 |
| 4294654 |
Delignification and bleaching of lignocellulosic pulp via photo-oxygenation |
Oct. 13, 1981 |
| 4172006 |
Method of delignifying wood chips with oxygen by adding cooking liquor under pressure |
Oct. 23, 1979 |
| 4165253 |
Process for producing pulp |
Aug. 21, 1979 |
| 4141787 |
Process for preparing chemical cellulose according to the sulfite process by increasing the total SO.sub.2 content of cooking acid with liquid SO.sub.2 and digesting wood chips |
Feb. 27, 1979 |
| 4066492 |
Method and device for examining pulp for the presence of shives |
Jan. 3, 1978 |
| 4000032 |
Process of freeing cellulose fibers from lignocellulosic material by irradiation |
Dec. 28, 1976 |
| 3998688 |
Method for the production of cellulose fibers using a two-step pre-treatment |
Dec. 21, 1976 |
| 3962029 |
Method of controlling the amount of chemicals in liquids used within the cellulose industry and related industries |
Jun. 8, 1976 |
| 3933577 |
Process of sonically treating municipal waste to produce high quality paper pulp and fertilizer |
Jan. 20, 1976 |
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