A method to process cellulosic material in a treatment vessel including: introducing the cellulosic material to a processing chamber of the vessel; adding heat energy or pressure to the vessel to hydrolyze the cellulosic material in the processing chamber and dissolve hemi-cellulosic from the cellulosic material; compressing the cellulosic material in the processing chamber; extracting …

Legal parties

Inventors (applicants): Namhee Shin, Bertil Stromberg, Peter Mraz, Thomas Pschorn
Assignees (initial): Andritz Inc. (Glens Falls, US)
Agents: Nixon & Vanderhye P.C. (attorney)

The application was examined by David A Reifsnyder (USPTO dept. 1778)


  • 1. A method to process biomass in a treatment vessel comprising: …
  • 2. The method of claim 1 wherein the step of compressing is performed with a pressing …
  • 3. The method of claim 1 further comprising crumbling the biomass after being compressed. …

Cited documents


  • Strickland, Jr. US 4036359 A, Jul. 1, 1977
  • WO 2007/051269 A1, May. 1, 2007
  • Haygreen US 4630535 A, Dec. 1, 1986

Brief Description of the Drawings

FIG. 1 is a perspective view of the top and front of a biomass treatment device. FIG. 2 is a side view of the biomass treatment device shown in FIG. …


Background of the Invention

The present invention relates to pre-treatment of cellulosic biomass feedstocks such as: agricultural residues, e.g., corn stalks, corn stover, hulls, cereal straws; energy plants, e.g., high yielding grasses including switch …

Related Application

This application is a divisional of U.S. application Ser. No. 12/503,617 filed on Jul. 15, 2009, now U.S. Pat. No. 8,353,989 B2, and claims the benefit of U.S. Provisional Patent …

Detailed Description of the Invention

FIG. 1 shows a perspective view and FIG. 2 shows a side view of a biomass treatment device 10 mounted between horizontal support beams 12 and cross-beams 14. The device …

More details about Method for Treating, Pressing and Washing Biomass

Miscellaneous patent data

Originally classified under Cellulose material, the invention description is illustrated by 9 drawings, the invention details are shown in 12 figures, the inventor's state is IL, city - Lake Forest, the recorded inventor's name is Namhee Shin, numbered 13/740,680 (application), the patent grant was extended by 30 days, the grant number is 08715419, the patent particularly claims a method to process biomass in a treatment vessel comprising…, 20 claims comprise the protection scope, the claim number 1 is selected as exemplary, developed by Bertil Stromberg et al., the assignee organization is Andritz Inc., located in Glens Falls (US), the invention is titled Method for Treating, Pressing and Washing Biomass, the grant publication date is May. 6, 2014, the application publication date is Jan. 14, 2013, the known agent's organization is Nixon & Vanderhye P.C., the drawings include the following: Side view of the biomass, Method for Treating, Pressing and Washing, Perspective view of the top and front, biomass treatment device shown in FIG., the assignee is a United States company, similar classification categories are Mixing, obtaining at least one reaction product which, at normal temperature, is in the solid state, Tubular cell, Stationary reactors without moving elements inside, Melting or dissolving, Treating amylaceous material, Alkali metals, Miscellaneous, Added chemical, having mainly transverse, i.e. lateral, flow of oxygen-containing gas and material, the application was examined by David A Reifsnyder (1778 USPTO department).

Invention classification information

The invention is classified under With separation from material of liquid expressed, obtained by saccharification of cellulosic materials, Cellulose material, With heating or cooling, Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter, Apparatus therefor, Screens or washers, Movable surface, Box, frame, cage, or annular wall. The designated search classifications include With separation from material of liquid expressed, Cellulose material, Movable surface, With heating or cooling, Screens or washers, Box, frame, cage, or annular wall.

Patent details
Publication number 08715419
Publication date May. 6, 2014
Kind code B2
Application number 13/740,680
Application date Jan. 14, 2013
Application type U
Application series code 13
Extension term 30
National classification 127/37
Total number of claims 20
Exemplary claims 1
Number of drawings 9
Number of figures 12
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