Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing oxygen-containing organic compound
Reexamination Certificate
2007-02-01
2010-02-23
Tate, Christopher R (Department: 1651)
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Preparing oxygen-containing organic compound
C435S041000, C435S161000, C435S209000
Reexamination Certificate
active
07666637
ABSTRACT:
The invented process separates main components in lignocellulosic biomass, specifically hardwoods, softwoods into lignin and fractions of high purity sugars which are used for ethanol production. The invented process comprises of treatment stages at high temperature and high pressure with hydrochloric acid or sulfuric acid. Residual lignin and extractives in the cellulosic solid fraction are selectively removed by chemical treatments of sodium chlorite, anhydrous acetic acid, chlorine and chlorine dioxide to enhance the purity and biological conversion of cellulose to ethanol. The pre-hydrolysate generated from the acid treatment stage, containing xylose, arabinose, galactose, glucose and the purified cellulosic fraction are enzymatically hydrolyzed and fermented to produce ethanol. Significant amount of lignin from the process is recovered as a by-product.
REFERENCES:
patent: 2140189 (1938-12-01), Mason
patent: 2234188 (1941-03-01), Mason
patent: 3212939 (1965-10-01), Hess et al.
patent: 3707436 (1972-12-01), O'Connor et al.
patent: 3817786 (1974-06-01), Algeo et al.
patent: 4136207 (1979-01-01), Bender et al.
patent: 4368268 (1983-01-01), Gong
patent: 4490468 (1984-12-01), Gong
patent: 4511656 (1985-04-01), Gong
patent: 4520105 (1985-05-01), Sinner et al.
patent: 4529699 (1985-07-01), Gerez et al.
patent: 4600590 (1986-07-01), Dale
patent: 4615742 (1986-10-01), Wright et al.
patent: 4663284 (1987-05-01), Jefferies
patent: 4731329 (1988-03-01), Lawford
patent: 4812410 (1989-03-01), Lawford
patent: 4816399 (1989-03-01), Lawford
patent: 4840903 (1989-06-01), Wu
patent: 4876196 (1989-10-01), Salzbrunn et al.
patent: 4912237 (1990-03-01), Zeitsch et al.
patent: 4964995 (1990-10-01), Chum et al.
patent: 5000000 (1991-03-01), Ingram et al.
patent: 5028539 (1991-07-01), Ingram et al.
patent: 5047332 (1991-09-01), Chahal et al.
patent: 5100791 (1992-03-01), Spindler et al.
patent: 5328562 (1994-07-01), Rafferty et al.
patent: 5372939 (1994-12-01), Lastick et al.
patent: 5411594 (1995-05-01), Brelsfud
patent: 5424417 (1995-06-01), Torget et al.
patent: 5503996 (1996-04-01), Torget et al.
patent: 5514583 (1996-05-01), Picataggio et al.
patent: 5536325 (1996-07-01), Brink
patent: 5705369 (1998-01-01), Torget et al.
patent: 5712133 (1998-01-01), Picataggio et al.
patent: 5726053 (1998-03-01), Picataggio et al.
patent: 5730837 (1998-03-01), Black et al.
patent: 5785852 (1998-07-01), Rivard et al.
patent: 5798237 (1998-08-01), Picataggio et al.
patent: 5807952 (1998-09-01), Agblevor
patent: 5843760 (1998-12-01), Zhang et al.
patent: 5868997 (1999-02-01), Wyman
patent: 5879463 (1999-03-01), Proenca
patent: 6022419 (2000-02-01), Torget et al.
patent: 6172272 (2001-01-01), Shabtai et al.
patent: 6423145 (2002-07-01), Nguyen et al.
patent: 6498029 (2002-12-01), Keller et al.
patent: 6566107 (2003-05-01), Zhang et al.
patent: 6660506 (2003-12-01), Nguyen et al.
patent: 6719908 (2004-04-01), Hames
patent: 6737258 (2004-05-01), Hames et al.
patent: 2007/0141693 (2007-06-01), Berg et al.
Kosar Aaron J
Tate Christopher R
LandOfFree
Integrated process for separation of lignocellulosic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Integrated process for separation of lignocellulosic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated process for separation of lignocellulosic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4193732