Patents by Inventor Bandaru V. Ramarao
Bandaru V. Ramarao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20180245285Abstract: An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes.Type: ApplicationFiled: March 21, 2018Publication date: August 30, 2018Applicant: The Research Foundation for The State University of New YorkInventors: Thomas E. Amidon, Raymond Francis, Gary M. Scott, Jeremy Bartholomew, Bandaru V. Ramarao, Christopher D. Wood
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Patent number: 9951363Abstract: A significant fraction of short fibers (fines) is produced while recycling Old Corrugated Containerboards (OCC), which are usually rejected as solid waste stream, requiring landfilling and posing environmental problems. The major component of these fines rejects are primarily cellulose that can be hydrolyzed into sugars for possible fermentation into biofuels, bioplastics or other sugar based products. Use of fines also offers benefits such as negative costs and production of fermentable sugars without requiring complex pretreatment processes, now required to hydrolyze and eliminate inhibitors from hydrolyzate. Enzymatic hydrolysis of reject fines from a recycled OCC mill, employing different strains of cellulases, were investigated. Fillers (up to 30 mass %) in the fines increases the required dosage of enzymes and costs. Enzyme loading can be lowered by addition of surfactants to reduce their inhibitory activity. The nonionic surfactant Triton X-80 improved hydrolysis yields by up to 10 percent points.Type: GrantFiled: March 13, 2015Date of Patent: April 24, 2018Assignee: The Research Foundation for the State University of New York College of Environmental Science and ForestryInventors: Byeong Cheol Min, Bhavin V. Bhayani, Bandaru V. Ramarao
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Patent number: 9945073Abstract: An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes.Type: GrantFiled: June 16, 2017Date of Patent: April 17, 2018Assignee: The Research Foundation for The State University of New YorkInventors: Thomas E. Amidon, Raymond Francis, Gary M. Scott, Jeremy Bartholomew, Bandaru V. Ramarao, Christopher D. Wood
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Patent number: 9850512Abstract: A method for processing a stream of cellulosic fines containing inorganic particles, to increase a hydrolysis yield of polysaccharide degradation enzymes, such fines in a waste stream from a recycled packaging paper mill to produce a stream of fermentable sugars, comprising treating the fines with a surfactant which selectively binds to the inorganic particles and which reduces binding to the inorganic particles by the polysaccharide degradation enzymes, and degrading polysaccharides in the waste stream with the polysaccharide degradation enzymes.Type: GrantFiled: March 14, 2014Date of Patent: December 26, 2017Assignee: The Research Foundation For The State University of New YorkInventors: Byeong Cheol Min, Bhavin V. Bhayani, Bandaru V. Ramarao
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Publication number: 20170306557Abstract: An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes.Type: ApplicationFiled: June 16, 2017Publication date: October 26, 2017Applicant: The Research Foundation for The State University of New YorkInventors: Thomas E. Amidon, Raymond Francis, Gary M. Scott, Jeremy Bartholomew, Bandaru V. Ramarao, Christopher D. Wood
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Patent number: 9751781Abstract: A method of separating a lignin-rich solid phase from a solution suspension, by pretreating a lignocellulosic biomass with a pretreatment fluid having remove soluble components, colloidal material and primarily lignin containing particles; separating the pretreated lignocellulosic biomass from the pretreatment fluid with soluble components, colloidal material and primarily lignin containing particles; flocculating the separated pretreatment fluid with soluble components, colloidal material and primarily lignin containing particles using polyethylene oxide (i.e., PEO) or cationic Poly acrylamide (i.e., CPAM) as a flocculating agent; and filtering the flocculated separated pretreatment fluid with soluble components, colloidal material and primarily lignin containing particles to remove agglomerates.Type: GrantFiled: March 15, 2013Date of Patent: September 5, 2017Assignee: The Research Foundation for The State University of New YorkInventors: Lakshmi Rakesh Kumar Yasarla, Bandaru V. Ramarao, Thomas Amidon
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Patent number: 9683329Abstract: An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes.Type: GrantFiled: February 24, 2016Date of Patent: June 20, 2017Assignee: The Research Foundation for The State University of New YorkInventors: Thomas E. Amidon, Raymond Francis, Gary M. Scott, Jeremy Bartholomew, Bandaru V. Ramarao, Christopher D. Wood
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Publication number: 20160168791Abstract: An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes.Type: ApplicationFiled: February 24, 2016Publication date: June 16, 2016Applicant: The Research Foundation for The State University of New YorkInventors: Thomas E. Amidon, Raymond Francis, Gary M. Scott, Jeremy Bartholomew, Bandaru V. Ramarao, Christopher D. Wood
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Publication number: 20160083808Abstract: A method of flocculating a lignin-containing hydrolyzate solution, comprising adding at least two agents, comprising at least one flocculant, effective for flocculating the hydrolyzate, resulting in a cake having a solids content greater than a solids content of a cake obtained from a hydrolyzate treated with an optimum flocculating amount of the flocculant aloneType: ApplicationFiled: September 18, 2015Publication date: March 24, 2016Inventors: Bandaru V. Ramarao, Vignesh Gnanavel, Mary Jennifer Puthota
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Patent number: 9273431Abstract: An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes. The aqueous extract in embodiments including a water extract step is separated into acetic acid and hemicellulose sugar aqueous solutions.Type: GrantFiled: January 23, 2015Date of Patent: March 1, 2016Assignee: The Research Foundation for The State University of New YorkInventors: Thomas E. Amidon, Raymond Francis, Gary M. Scott, Jeremy Bartholomew, Bandaru V. Ramarao, Christopher D. Wood
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Publication number: 20150259719Abstract: A significant fraction of short fibers (fines) is produced while recycling Old Corrugated Containerboards (OCC), which are usually rejected as solid waste stream, requiring landfilling and posing environmental problems. The major component of these fines rejects are primarily cellulose that can be hydrolyzed into sugars for possible fermentation into biofuels, bioplastics or other sugar based products. Use of fines also offers benefits such as negative costs and production of fermentable sugars without requiring complex pretreatment processes, now required to hydrolyze and eliminate inhibitors from hydrolyzate. Enzymatic hydrolysis of reject fines from a recycled OCC mill, employing different strains of cellulases, were investigated. Fillers (up to 30 mass %) in the fines increases the required dosage of enzymes and costs. Enzyme loading can be lowered by addition of surfactants to reduce their inhibitory activity. The nonionic surfactant Triton X-80 improved hydrolysis yields by up to 10 percent points.Type: ApplicationFiled: March 13, 2015Publication date: September 17, 2015Inventors: Byeong Cheol Min, Bhavin V. Bhayani, Bandaru V. Ramarao
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Publication number: 20150136344Abstract: An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes. The aqueous extract in embodiments including a water extract step is separated into acetic acid and hemicellulose sugar aqueous solutions.Type: ApplicationFiled: January 23, 2015Publication date: May 21, 2015Applicant: The Research Foundation for The State University of New YorkInventors: Thomas E. Amidon, Raymond Francis, Gary M. Scott, Jeremy Bartholomew, Bandaru V. Ramarao, Christopher D. Wood
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Publication number: 20150044733Abstract: A method of separating a lignin-rich solid phase from a solution, comprising: pretreating a lignocellulosic biomass with a pretreatment fluid having to remove soluble components, colloidal material and primarily lignin containing particles; separating the pretreated lignocellulosic biomass from the pretreatment fluid with soluble components, colloidal material and primarily lignin containing particles; flocculating the separated pretreatment fluid with soluble components, colloidal material and primarily lignin containing particles using PEO or CPAM as a flocculating agent; and filtering the flocculated separated pretreatment fluid with soluble components, colloidal material and primarily lignin containing particles to remove agglomerates.Type: ApplicationFiled: March 15, 2013Publication date: February 12, 2015Applicant: The Research Foundation for The State University of New YorkInventors: Lakshmi Rakesh Kumar Yasarla, Bandaru V. Ramarao, Thomas Amidon
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Patent number: 8940133Abstract: An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes. The aqueous extract in embodiments including a water extract step is separated into acetic acid and hemicellulose sugar aqueous solutions.Type: GrantFiled: March 6, 2014Date of Patent: January 27, 2015Assignee: The Research Foundation for The State University of New YorkInventors: Thomas E. Amidon, Raymond Francis, Gary M. Scott, Jeremy Bartholomew, Bandaru V. Ramarao, Christopher D. Wood
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Publication number: 20140273107Abstract: A method for processing a stream of cellulosic fines containing inorganic particles, to increase a hydrolysis yield of polysaccharide degradation enzymes, such fines in a waste stream from a recycled packaging paper mill to produce a stream of fermentable sugars, comprising treating the fines with a surfactant which selectively binds to the inorganic particles and which reduces binding to the inorganic particles by the polysaccharide degradation enzymes, and degrading polysaccharides in the waste stream with the polysaccharide degradation enzymes.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: The Research Foundation for The State University of New YorkInventors: Bhavin V. Bhayani, Byeong Cheol Min, Bandaru V. Ramarao
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Publication number: 20140182796Abstract: An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes. The aqueous extract in embodiments including a water extract step is separated into acetic acid and hemicellulose sugar aqueous solutions.Type: ApplicationFiled: March 6, 2014Publication date: July 3, 2014Applicant: THE RESEARCH FOUNDATION FOR THE STATE UNIVERSITY OF NEW YORKInventors: Thomas E. Amidon, Raymond Francis, Gary M. Scott, Jeremy Bartholomew, Bandaru V. Ramarao, Christopher D. Wood
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Patent number: 8668806Abstract: An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes. The aqueous extract in embodiments including a water extract step is separated into acetic acid and hemicellulose sugar aqueous solutions.Type: GrantFiled: November 21, 2012Date of Patent: March 11, 2014Assignee: The Research Foundation of the State University of New YorkInventors: Thomas E. Amidon, Raymond Francis, Gary M. Scott, Jeremy Bartholomew, Bandaru V. Ramarao, Christopher D. Wood
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Publication number: 20130112359Abstract: An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes. The aqueous extract in embodiments including a water extract step is separated into acetic acid and hemicellulose sugar aqueous solutions.Type: ApplicationFiled: November 21, 2012Publication date: May 9, 2013Inventors: Thomas E. Amidon, Raymond Francis, Gary M. Scott, Jeremy Bartholomew, Bandaru V. Ramarao, Christopher D. Wood
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Patent number: 8317975Abstract: An omnibus process of pulping and bleaching lignocellulosic materials in which a charge of a lignocellulosic material is biopulped and/or water extracted prior to pulping and bleaching. The lignocellulosic material may be mechanically pulped and bleached in the presence of an enzyme that breaks lignin-carbohydrate complexes. The aqueous extract in embodiments including a water extract step is separated into acetic acid and hemicellulose sugar aqueous solutions.Type: GrantFiled: April 27, 2006Date of Patent: November 27, 2012Assignee: The Research Foundation of the State University of New YorkInventors: Thomas E. Amidon, Raymond Francis, Gary M. Scott, Jeremy Bartholomew, Bandaru V. Ramarao, Christopher D. Wood
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Patent number: 5954922Abstract: Method and apparatus are presented for use in a papermaking process for determining permeability and/or compressibility characteristics of a pulp suspension within the process. The method/apparatus includes monitoring height of pulp suspension within one or more test columns as a function of time while allowing pulp suspension drainage from each test column. At least one parameter representative of permeability or compressibility of the pulp suspension is determined, via computer processing, using the monitored height as a function of time of the pulp suspension within the test column. The at least one parameter representative of permeability or compressibility can comprise specific surface area (S.sub.w), specific volume (v.sub.f) compressibility constant m or compressibility constant n for the pulp suspension.Type: GrantFiled: May 29, 1997Date of Patent: September 21, 1999Assignee: The Research Foundation of State University of New YorkInventor: Bandaru V. Ramarao