Patent ID: 11958209
Assignee: UNIVERSITY OF MARYLAND, COLLEGE PARK
Field: Machine tools (Mechanical engineering)
Classification: CPC B  F | IPC B

Claim 16:
17. The method of claim 16, wherein the removing comprises immersing the piece of natural wood in a chemical solution comprising at least one of NaOH, Na2S, NaHSO3, SO2, H2O, Na2SO3, Anthraquinone (AQ), Na2Sn (where n is an integer), CH3OH, C2H5OH, C4H9OH, HCOOH, NH3, p-TsOH, NH3-H2O, H2O2, NaClO, NaClO2, CH3COOH (acetic acid), ClO2, and Cl2.