Patents by Inventor Dirk Schweitzer
Dirk Schweitzer 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: 20250289831Abstract: The present disclosure relates generally to compositions comprising ligand-AI-hydride complexes, and methods to make said and related compositions. In particular, the present disclosure provides for a composition comprising a ligand-AI-hydride, wherein the composition has a purity greater than 99%.Type: ApplicationFiled: April 27, 2023Publication date: September 18, 2025Inventors: Dirk SCHWEITZER, Matthew Damien STEPHENS
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Patent number: 9850192Abstract: Processes and methods for making biobased acrylic acid products including acrylic acid, acrylic acid oligomers, acrylic acid esters, acrylic acid polymers and articles from renewable carbon resources are described herein.Type: GrantFiled: June 7, 2013Date of Patent: December 26, 2017Assignee: CJ Cheiljedang CorporationInventors: Stephen Harris, Kevin A. Sparks, Oliver P. Peoples, Yossef Shabtai, Christopher W. J. McChalicher, Johan van Walsem, Christopher Mirley, Dirk Schweitzer
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Publication number: 20150376152Abstract: Processes and methods for making ultra-pure (>99.50% by weight), biobased crotonic acid, gamma-butyro lactone, acrylic acid and delta-valerolactone from renewable carbon resources are described herein.Type: ApplicationFiled: February 12, 2014Publication date: December 31, 2015Applicant: Metabolix, Inc.Inventors: Derek Samuelson, Oliver P. Peoples, Yossef Shabtai, Johan Van Walsem, Dirk Schweitzer, Harvey H. Morgan, III, Kevin A. Sparks
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Patent number: 9073867Abstract: Provided herein are processes for preparing caprolactam from a starting material such as one or more of the cis,cis-, cis,trans- and trans,trans-double-bond isomers of muconamide, muconic acid ester, or muconic acid. The starting material, intermediates, and caprolactam prepared therefrom can contain carbon atoms derived from biomass containing detectable 14C content determined according to ASTM D6866 and optionally containing a 14C content up to 0.0000000001% (one part per trillion). Caprolactam so prepared can be used to make various polyamides.Type: GrantFiled: April 9, 2012Date of Patent: July 7, 2015Assignee: Amyris, Inc.Inventors: Laetitia Coudray, Vu Bui, John W. Frost, Dirk Schweitzer
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Publication number: 20150183708Abstract: Processes and methods for making biobased acrylic acid products including acrylic acid, acrylic acid oligomers, acrylic acid esters, acrylic acid polymers and articles from renewable carbon resources are described herein.Type: ApplicationFiled: June 7, 2013Publication date: July 2, 2015Inventors: Stephen Harris, Kevin A. Sparks, Oliver P. Peoples, Yossef Shabtai, Christopher W.J. McChalicher, Johan van Walsem, Christopher Mirley, Dirk Schweitzer
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Patent number: 8809583Abstract: A method for producing cis,trans- and trans,trans-isomers of muconate by providing cis,cis -muconate produced from a renewable carbon source through biocatalytic conversion; isomerizing cis,cis-muconate to cis,trans-muconate under reaction conditions in which substantially all of the cis,cis-muconate is isomerized to cis,trans -muconate; separating the cis,trans-muconate; and crystallizing the cis,trans-muconate. The cis,trans-isomer can be further isomerized to the trans,trans-isomer. In one example, the method includes culturing recombinant cells that express 3-dehydroshikimate dehydratase, protocatechuate decarboxylase and catechol 1,2-dioxygenase in a medium comprising the renewable carbon source and under conditions in which the renewable carbon source is converted to 3-dehydroshikimate by enzymes in the common pathway of aromatic amino acid biosynthesis of the cell, and the 3-dehydroshikimate is biocatalytically converted to cis,cis-muconate.Type: GrantFiled: January 10, 2011Date of Patent: August 19, 2014Assignee: Amyris, Inc.Inventors: Vu Bui, Man Kit Lau, Doug MacRae, Dirk Schweitzer
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Patent number: 8426639Abstract: The present invention relates to the isomerization of cis,cis and/or cis,trans muconic acid or esters thereof to trans,trans muconic acid or esters thereof and to the esterification of such muconic acids.Type: GrantFiled: June 16, 2010Date of Patent: April 23, 2013Assignee: Amyris, Inc.Inventors: John W. Frost, Adeline Miermont, Dirk Schweitzer, Vu Bui
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Patent number: 8415496Abstract: The present invention relates to polyesters prepared from benzene, cyclohexene and cyclohexane compounds having carboxylic acid groups at the 1 and 4, and optionally the 2, positions, such as terephthalic acid or dimethyl terephthalates, and alkylene glycols, such ethylene glycol or 1,4-butane diol. The invention also relates to processes for preparing such polyesters. The invention also relates to such polyesters derived from starting materials derived from renewable resources.Type: GrantFiled: June 16, 2010Date of Patent: April 9, 2013Assignee: Amyris, Inc.Inventors: John W. Frost, Adeline Miermont, Dirk Schweitzer, Vu Bui, Edward Paschke, Douglas A. Wicks
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Publication number: 20130085255Abstract: Provided herein are processes for preparing caprolactam from a starting material such as one or more of the cis,cis-, cis,trans- and trans,trans-double-bond isomers of muconamide, muconic acid ester, or muconic acid. The starting material, intermediates, and caprolactam prepared therefrom can contain carbon atoms derived from biomass containing detectable 14C content determined according to ASTM D6866 and optionally containing a 14C content up to 0.0000000001% (one part per trillion). Caprolactam so prepared can be used to make various polyamides.Type: ApplicationFiled: April 9, 2012Publication date: April 4, 2013Applicant: Amyris, Inc.Inventors: Laetitia Coudray, Vu Bui, John W. Frost, Dirk Schweitzer
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Patent number: 8367858Abstract: The present invention relates to novel substituted and unsubstituted terephthalic acid and carboxylate derivatives and products prepared therefrom having a significant renewable content. The invention also relates to processes for preparing substituted and unsubstituted terephthalic and carboxylate derivatives thereof wherein a portion of the starting materials utilized is derived from renewable resources. The invention also relates to novel cyclohexene based intermediates prepared in these processes and to conversion of these intermediates to substituted and unsubstituted cyclohexane-1,4-dicarboxylates and carboxylate derivatives thereof and novel forms of the resulting products having renewable content. The invention also relates to products prepared from substituted and unsubstituted terephthalic acid and carboxylate derivatives thereof derived from starting materials derived from renewable resources.Type: GrantFiled: June 16, 2010Date of Patent: February 5, 2013Assignee: Amyris, Inc.Inventors: John W. Frost, Adeline Miermont, Dirk Schweitzer, Vu Bui, Douglas A. Wicks
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Patent number: 8367859Abstract: The present invention relates to cyclohexanes having carboxylate derivatives at the 1 and 4, and optionally the 2, position. The invention also relates to processes for preparing such compounds wherein a portion of the starting materials utililzed is derived from renewable resources.Type: GrantFiled: June 16, 2010Date of Patent: February 5, 2013Assignee: Amyris, Inc.Inventors: John W. Frost, Adeline Miermont, Dirk Schweitzer, Vu Bui, Douglas A. Wicks
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Publication number: 20130030215Abstract: A method for producing cis,trans- and trans,trans-isomers of muconate by providing cis,cis-muconate produced from a renewable carbon source through biocatalytic conversion; isomerizing cis,cis-muconate to cis,trans-muconate under reaction conditions in which substantially all of the cis,cis-muconate is isomerized to cis,trans-muconate; separating the cis,trans-muconate; and crystallizing the cis,trans-muconate. The cis,trans-isomer can be further isomerized to the trans,trans-isomer. In one example, the method includes culturing recombinant cells that express 3-dehydroshikimate dehydratase, protocatechuate decarboxylase and catechol 1,2-dioxygenase in a medium comprising the renewable carbon source and under conditions in which the renewable carbon source is converted to 3-dehydroshikimate by enzymes in the common pathway of aromatic amino acid biosynthesis of the cell, and the 3-dehydroshikimate is biocatalytically converted to cis,cis-muconate.Type: ApplicationFiled: January 10, 2011Publication date: January 31, 2013Applicant: Amyris, Inc.Inventors: Vu Bui, Man Kit Lau, Doug MacRae, Dirk Schweitzer
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Publication number: 20110288310Abstract: The present invention relates to cyclohexanes having carboxylate derivatives at the 1 and 4, and optionally the 2, position. The invention also relates to processes for preparing such compounds wherein a portion of the starting materials utililzed is derived from renewable resources.Type: ApplicationFiled: June 16, 2010Publication date: November 24, 2011Applicant: Draths CorporationInventors: John W. Frost, Adeline Miermont, Dirk Schweitzer, Vu Bui, Douglas A. Wicks
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Publication number: 20110288311Abstract: The present invention relates to novel substituted and unsubstituted terephthalic acid and carboxylate derivatives and products prepared therefrom having a significant renewable content. The invention also relates to processes for preparing substituted and unsubstituted terephthalic and carboxylate derivatives thereof wherein a portion of the starting materials utilized is derived from renewable resources. The invention also relates to novel cyclohexene based intermediates prepared in these processes and to conversion of these intermediates to substituted and unsubstituted cyclohexane-1,4-dicarboxylates and carboxylate derivatives thereof and novel forms of the resulting products having renewable content. The invention also relates to products prepared from substituted and unsubstituted terephthalic acid and carboxylate derivatives thereof derived from starting materials derived from renewable resources.Type: ApplicationFiled: June 16, 2010Publication date: November 24, 2011Applicant: Draths CorporationInventors: John W. Frost, Adeline Miermont, Dirk Schweitzer, Vu Bui, Douglas A. Wicks
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Publication number: 20110288263Abstract: The present invention relates to polyesters prepared from benzene, cyclohexene and cyclohexane compounds having carboxylic acid groups at the 1 and 4, and optionally the 2, positions, such as terephthalic acid or dimethyl terephthalates, and alkylene glycols, such ethylene glycol or 1,4-butane diol. The invention also relates to processes for preparing such polyesters. The invention also relates to such polyesters derived from starting materials derived from renewable resources.Type: ApplicationFiled: June 16, 2010Publication date: November 24, 2011Applicant: Draths CorporationInventors: John W. Frost, Adeline Miermont, Dirk Schweitzer, Vu Bui, Edward Paschke, Douglas A. Wicks
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Publication number: 20110282078Abstract: The present invention relates to cyclohexenes having carboxylate derivatives at the 1 and 4, and optionally the 2, position. The invention also relates to processes for preparing such compounds wherein a portion of the starting materials utilized is derived from renewable resources.Type: ApplicationFiled: June 16, 2010Publication date: November 17, 2011Applicant: Draths CorporationInventors: John W. Frost, Adeline Miermont, Dirk Schweitzer, Vu Bui, Douglas A. Wicks
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Publication number: 20100314243Abstract: The present invention relates to the isomerization of cis,cis and/or cis,trans muconic acid or esters thereof to trans,trans muconic acid or esters thereof and to the esterification of such muconic acids.Type: ApplicationFiled: June 16, 2010Publication date: December 16, 2010Applicant: Draths CorporationInventors: John W. Frost, Adeline Miermont, Dirk Schweitzer, Vu Bui