Patents by Inventor Frank DU
Frank DU 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).
-
Patent number: 10333069Abstract: The present invention provides methods for purifying a layer of carbon nanotubes comprising providing a precursor layer of substantially aligned carbon nanotubes supported by a substrate, wherein the precursor layer comprises a mixture of first carbon nanotubes and second carbon nanotubes; selectively heating the first carbon nanotubes; and separating the first carbon nanotubes from the second carbon nanotubes, thereby generating a purified layer of carbon nanotubes. Devices benefiting from enhanced electrical properties enabled by the purified layer of carbon nanotubes are also described.Type: GrantFiled: November 17, 2016Date of Patent: June 25, 2019Assignees: The Board of Trustees of The University of Illinois, Northwestern University, University of MiamiInventors: John A. Rogers, William L. Wilson, Sung Hun Jin, Simon N. Dunham, Xu Xie, Ahmad Islam, Frank Du, Yonggang Huang, Jizhou Song
-
Patent number: 9825229Abstract: The present invention provides methods for purifying a layer of carbon nanotubes comprising providing a precursor layer of substantially aligned carbon nanotubes supported by a substrate, wherein the precursor layer comprises a mixture of first carbon nanotubes and second carbon nanotubes; selectively heating the first carbon nanotubes; and separating the first carbon nanotubes from the second carbon nanotubes, thereby generating a purified layer of carbon nanotubes. Devices benefiting from enhanced electrical properties enabled by the purified layer of carbon nanotubes are also described.Type: GrantFiled: April 3, 2014Date of Patent: November 21, 2017Assignees: The Board of Trustees of the University of Illinois, Northwestern University, University of MiamiInventors: John A. Rogers, William L. Wilson, Sung Hun Jin, Simon N. Dunham, Xu Xie, Ahmad Islam, Frank Du, Yonggang Huang, Jizhou Song
-
Publication number: 20170291817Abstract: The present invention provides methods for purifying a layer of carbon nanotubes comprising providing a precursor layer of substantially aligned carbon nanotubes supported by a substrate, wherein the precursor layer comprises a mixture of first carbon nanotubes and second carbon nanotubes; selectively heating the first carbon nanotubes; and separating the first carbon nanotubes from the second carbon nanotubes, thereby generating a purified layer of carbon nanotubes. Devices benefiting from enhanced electrical properties enabled by the purified layer of carbon nanotubes are also described.Type: ApplicationFiled: November 17, 2016Publication date: October 12, 2017Inventors: John A. ROGERS, William L. WILSON, Sung Hun JIN, Simon N. DUNHAM, Xu XIE, Ahmed ISLAM, Frank DU, Yonggang HUANG, Jizhou SONG
-
Publication number: 20160133843Abstract: The present invention provides methods for purifying a layer of carbon nanotubes comprising providing a precursor layer of substantially aligned carbon nanotubes supported by a substrate, wherein the precursor layer comprises a mixture of first carbon nanotubes and second carbon nanotubes; selectively heating the first carbon nanotubes; and separating the first carbon nanotubes from the second carbon nanotubes, thereby generating a purified layer of carbon nanotubes. Devices benefiting from enhanced electrical properties enabled by the purified layer of carbon nanotubes are also described.Type: ApplicationFiled: April 3, 2014Publication date: May 12, 2016Inventors: John A. ROGERS, William L. WILSON, Sung Hun JIN, Simon N. DUNHAM, Xu XIE, Ahmed ISLAM, Frank DU, Yonggang HUANG, Jizhou SONG
-
Publication number: 20140296498Abstract: Methods, processes and materials for the production and recovery of Tiacumicins produced by culturing a microorganism belonging to the species Dactylosporangium aurantiacum subspecies hamdenensis having the ability to produce and accumulate one or more Tiacumicin in a nutrient medium comprising a carbon source, a nitrogen source, trace elements such as inorganic salts, and an adsorbent, wherein said nitrogen source comprises fish powder, and wherein said Tiacumicin is produced in a yield greater than about 50 mg/L broth.Type: ApplicationFiled: May 19, 2014Publication date: October 2, 2014Applicant: Optimer Pharmaceuticals, Inc.Inventors: Youe-Kong Shue, Chi-Jen Frank Du, Ming-His Chiou, Mei-Chiao Wu, Yuan-Ting Chen, Franklin W. Okumu, Jonathan James Duffield
-
Patent number: 8728796Abstract: Methods, processes and materials for the production and recovery of Tiacumicins produced by culturing a microorganism belonging to the species Dactylosporangium aurantiacum subspecies hamdenensis having the ability to produce and accumulate one or more Tiacumicin in a nutrient medium comprising a carbon source, a nitrogen source, trace elements such as inorganic salts, and an adsorbent, wherein said nitrogen source comprises fish powder, and wherein said Tiacumicin is produced in a yield greater than about 50 mg/L broth.Type: GrantFiled: June 12, 2012Date of Patent: May 20, 2014Assignee: Optimer Pharmaceuticals, Inc.Inventors: Youe-Kong Shue, Chi-Jen Frank Du, Ming-His Chiou, Mei-Chiao Wu, Yuan-Ting Chen, Franklin W. Okumu, Jonathan James Duffield
-
Publication number: 20130123477Abstract: Methods, processes and materials for the production and recovery of Tiacumicins produced by culturing a microorganism belonging to the species Dactylosporangium aurantiacum subspecies hamdenensis having the ability to produce and accumulate one or more Tiacumicin in a nutrient medium comprising a carbon source, a nitrogen source, trace elements such as inorganic salts, and an adsorbent, wherein said nitrogen source comprises fish powder, and wherein said Tiacumicin is produced in a yield greater than about 50 mg/L broth.Type: ApplicationFiled: June 12, 2012Publication date: May 16, 2013Applicant: OPTIMER PHARMACEUTICALS, INC.Inventors: Youe-Kong Shue, Chi-Jen Frank Du, Ming-His Chiou, Mei-Chiao Wu, Yuan-Ting Chen, Franklin W. Okumu, Jonathan James Duffield
-
Publication number: 20100028970Abstract: Methods, processes and materials for the production and recovery of Tiacumicins produced by culturing a microorganism belonging to the species Dactylosporangium aurantiacum subspecies hamdenensis having the ability to produce and accumulate one or more Tiacumicin in a nutrient medium comprising a carbon source, a nitrogen source, trace elements such as inorganic salts, and an adsorbent, wherein said nitrogen source comprises fish powder, and wherein said Tiacumicin is produced in a yield greater than about 50 mg/L broth.Type: ApplicationFiled: February 4, 2009Publication date: February 4, 2010Inventors: Youe-Kong Shue, Chi-Jen Frank Du, Ming-Hsi Chiou, Mei-Chiao Wu, Yuan-Ting Chen, Franklin W. Okumu, Jonathan James Duffield
-
Patent number: 7507564Abstract: Methods, processes and materials for the production and recovery of Tiacumicins produced by culturing a microorganism belonging to the species Dactylosporangium aurantiacum subspecies hamdenensis having the ability to produce and accumulate one or more Tiacumicin in a nutrient medium comprising a carbon source, a nitrogen source, trace elements such as inorganic salts, and an adsorbent, wherein said nitrogen source comprises fish powder, and wherein said Tiacumicin is produced in a yield greater than about 50 mg/L broth.Type: GrantFiled: July 15, 2003Date of Patent: March 24, 2009Assignee: Optimer Pharmaceuticals, Inc.Inventors: Youe-Kong Shue, Chi-Jen Frank Du, Ming-Hsi Chiou, Mei-Chiao Wu, Yuan-Ting Chen, Franklin W. Okumu, Jonathan James Duffield
-
Patent number: 5172917Abstract: A sealing device for sealing an annular space between two machine elements (2, 4) rotatable in relation to each other, comprising an elastic material sealing ring (8) and a counterface (36) engaged by a sealing lip (14) of the sealing ring. The sealing ring (8) has a main body (12) received in a groove (22) in one of the machine elements (2). The main body (12) of the sealing ring has, at least one of two side surfaces of the groove (22), at least one annular projection (18) engaging the opposite side surface of the groove.Type: GrantFiled: April 29, 1991Date of Patent: December 22, 1992Assignee: Forsheda ABInventor: Frank du Gay
-
Patent number: D322120Type: GrantFiled: October 29, 1990Date of Patent: December 3, 1991Assignee: Forsheda ABInventor: Frank du Gay