Patents by Inventor Janak Singh
Janak Singh 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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Patent number: 9453039Abstract: The present invention relates to physical crystal structures of a compound of the formula I: wherein R1, R2, R2a, R3 and R4 are as defined herein, especially pharmaceutical compositions containing structures of compound I or II, processes for preparing same, intermediates used in preparing same, and methods of treating diseases such as diabetes using such structures.Type: GrantFiled: July 10, 2013Date of Patent: September 27, 2016Assignee: AstraZeneca ABInventors: Jack Z. Gougoutas, Hildegard Lobinger, Srividya Ramakrishnan, Prashant P. Deshpande, Jeffrey T. Bien, Chiajen Lai, Chenchi Wang, Peter Riebel, John Anthony Grosso, Alexandra A. Nirschl, Janak Singh, John D. DiMarco
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Publication number: 20140243517Abstract: Method for the production of C-aryl glucoside SGLT2 inhibitors useful for the treatment of diabetes and related diseases. and intermediates thereof. The C-aryl glucosides may be complexed with amino acid complex forming reagents.Type: ApplicationFiled: May 1, 2014Publication date: August 28, 2014Applicant: AstraZeneca ABInventors: Prashant P. Deshpande, Bruce A. Ellsworth, Janak Singh, Theodor W. Denzel, Chiajen Lai, Gerard Crispino, Michael E. Randazzo, Jack Z. Gougoutas
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Publication number: 20130303467Abstract: The present invention relates to physical crystal structures of a compound of the formula I: wherein R1, R2, R2a, R3 and R4 are as defined herein, especially pharmaceutical compositions containing structures of compound I or II, processes for preparing same, intermediates used in preparing same, and methods of treating diseases such as diabetes using such structures.Type: ApplicationFiled: July 10, 2013Publication date: November 14, 2013Inventors: Jack Z. Gougoutas, Hildegard Lobinger, Srividya Ramakrishnan, Prashant P. Deshpande, Jeffrey T. Bien, Chiajen Lai, Chenchi Wang, Peter Riebel, John Anthony Grosso, Alexandra A. Nirschl, Janak Singh, John D. DiMarco
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Patent number: 8501698Abstract: The present invention relates to physical crystal structures of a compound of the formula I: wherein R1, R2, R2a, R3 and R4 are as defined herein, especially pharmaceutical compositions containing structures of compound I or II, processes for preparing same, intermediates used in preparing same, and methods of treating diseases such as diabetes using such structures.Type: GrantFiled: March 16, 2011Date of Patent: August 6, 2013Assignee: Bristol-Myers Squibb CompanyInventors: Jack Z. Gougoutas, Hildegard Lobinger, Srividya Ramakrishnan, Prashant P. Deshpande, Jeffrey T. Bien, Chiajen Lai, Chenchi Wang, Peter Riebel, John Anthony Grosso, Alexandra A. Nirschl, Janak Singh, John D. DiMarco
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Publication number: 20110201795Abstract: Method for the production of C-aryl glucoside SGLT2 inhibitors useful for the treatment of diabetes and related diseases. and intermediates thereof. The C-aryl glucosides may be complexed with amino acid complex forming reagents.Type: ApplicationFiled: April 25, 2011Publication date: August 18, 2011Applicant: BRISTOL-MYERS SQUIBB COMPANYInventors: Prashant P. Deshpande, Bruce A. Ellsworth, Janak Singh, Theodor W. Denzel, Chiajen Lai, Gerard Crispino, Michael E. Randazzo, Jack Z. Gougoutas
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Publication number: 20110172176Abstract: The present invention relates to physical crystal structures of a compound of the formula I: wherein R1, R2, R2a, R3 and R4 are as defined herein, especially pharmaceutical compositions containing structures of compound I or II, processes for preparing same, intermediates used in preparing same, and methods of treating diseases such as diabetes using such structures.Type: ApplicationFiled: March 16, 2011Publication date: July 14, 2011Applicant: BRISTOL-MYERS SQUIBB COMPANYInventors: Jack Z. Gougoutas, Hildegard Lobinger, Srividya Ramakrishnan, Prashant P. Deshpande, Jeffrey T. Bien, Chiajen Lai, Chenchi Wang, Peter Riebel, John Anthony Grosso, Alexandra A. Nirschl, Janak Singh, John D. DiMarco
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Patent number: 7932379Abstract: Method for the production of C-aryl glucoside SGLT2 inhibitors useful for the treatment of diabetes and related diseases. and intermediates thereof. The C-aryl glucosides may be complexed with amino acid complex forming reagents.Type: GrantFiled: June 19, 2007Date of Patent: April 26, 2011Assignee: Bristol-Myers Squibb CompanyInventors: Prashant P. Deshpande, Bruce A. Ellsworth, Janak Singh, Theodor W. Denzel, Chiajen Lai, Gerard Crispino, Michael E. Randazzo, Jack Z. Gougoutas
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Patent number: 7919598Abstract: The present invention relates to physical crystal structures of a compound of the formula I: wherein R1, R2, R2a, R3 and R4 are as defined herein, especially pharmaceutical compositions containing structures of compound I or II, processes for preparing same, intermediates used in preparing same, and methods of treating diseases such as diabetes using such structures.Type: GrantFiled: June 20, 2007Date of Patent: April 5, 2011Assignee: Bristol-Myers Squibb CompanyInventors: Jack Z. Gougoutas, Hildegard Lobinger, Srividya Ramakrishnan, Prashant P. Deshpande, Jeffrey T. Bien, Chiajen Lai, Chenchi Wang, Peter Riebel, John Anthony Grosso, Alexandra A. Nirschl, Janak Singh, John D. DiMarco
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Patent number: 7616987Abstract: A microprobe that is capable of using an incident and reflected radiation ray for three-dimensional (3-D) bio-imaging. The microprobe comprises a hollow body closed at one end and having an aperture at an opposite end, at least one 3-D free space micromirror, at least one focusing lens, and a beam director or a beam coupler or other kind of device for beam coupling or splitting. The beam director is arranged at the aperture end of the hollow body and is adapted to direct the incident ray into the hollow body via the aperture. Within said hollow body is the at least one focusing lens and the at least one micromirror arranged respectively from the aperture, such that the distance between the focusing lens and the micromirror allows for the incident light ray to be directed onto the micromirror.Type: GrantFiled: October 5, 2005Date of Patent: November 10, 2009Assignees: Agency For Science, Technology and Research, National University of SingaporeInventors: Chirayarikathuveedu Sankarapillai Premachandran, Janak Singh, Joseph Suresh Paul, Pamidighantam Venkata Ramana, Colin James Richard Sheppard
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Patent number: 7486430Abstract: In a 3D free space micromirror device, a mirror plate is joined with actuators through flexible springs where the other ends of the actuators have fixed support on the substrate. Single crystal silicon and aluminum are used as bi-morph materials with silicon dioxide providing electrical isolation between the two. Thickness variation in the microstructure is achieved by two-step p-n junction formed in a p-type substrate. Thick and thin n-silicon layer formation and DRIE cut mechanisms are employed in such a way that all the thick and thin silicon components of the structure are released simultaneously avoiding overetch which can be detrimental to the thin flexural springs. Working prototypes of the device have been found suitable for any optical switching array architecture where deflections up to 10 degrees are required.Type: GrantFiled: February 2, 2006Date of Patent: February 3, 2009Assignee: Agency for Science, Technology and ResearchInventors: Chih Kiong Terence Gan, Ajay Agarwal, Janak Singh, Xiaolin Zhang
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Patent number: 7375213Abstract: Method for the production of C-aryl glucoside SGLT2 inhibitors useful for the treatment of diabetes and related diseases. and intermediates thereof. The C-aryl glucosides may be complexed with amino acid complex forming reagents.Type: GrantFiled: December 23, 2003Date of Patent: May 20, 2008Assignee: Bristol-Myers Squibb CompanyInventors: Prashant P. Deshpande, Bruce A. Ellsworth, Janak Singh, Theodor W. Denzel, Chiajen Lai, Gerard Crispino, Michael E. Randazzo, Jack Z. Gougoutas
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Publication number: 20080004336Abstract: The present invention relates to physical crystal structures of a compound of the formula I: wherein R1, R2, R2a, R3 and R4 are as defined herein, especially pharmaceutical compositions containing structures of compound I or II, processes for preparing same, intermediates used in preparing same, and methods of treating diseases such as diabetes using such structures.Type: ApplicationFiled: June 20, 2007Publication date: January 3, 2008Inventors: Jack Gougoutas, Hildegard Lobinger, Srividya Ramakrishnan, Prashant Deshpande, Jeffrey Bien, Chiajen Lai, Chenchi Wang, Peter Riebel, John Grosso, Alexandra Nirschl, Janak Singh, John DiMarco
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Publication number: 20070238866Abstract: Method for the production of C-aryl glucoside SGLT2 inhibitors useful for the treatment of diabetes and related diseases. and intermediates thereof. The C-aryl glucosides may be complexed with amino acid complex forming reagents.Type: ApplicationFiled: June 19, 2007Publication date: October 11, 2007Inventors: Prashant Deshpande, Bruce Ellsworth, Janak Singh, Theodor Denzel, Chiajen Lai, Gerard Crispino, Michael Randazzo, Jack Gougoutas
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Publication number: 20060195019Abstract: A microprobe that is capable of using an incident and reflected radiation ray for three-dimensional (3-D) bio-imaging. The microprobe comprises a hollow body closed at one end and having an aperture at an opposite end, at least one 3-D free space micromirror, at least one focusing lens, and a beam director or a beam coupler or other kind of device for beam coupling or splitting. The beam director is arranged at the aperture end of the hollow body and is adapted to direct the incident ray into the hollow body via the aperture. Within said hollow body is the at least one focusing lens and the at least one micromirror arranged respectively from the aperture, such that the distance between the focusing lens and the micromirror allows for the incident light ray to be directed onto the micromirror.Type: ApplicationFiled: October 5, 2005Publication date: August 31, 2006Inventors: Chirayarikathuveedu Premachandran, Janak Singh, Joseph Paul, Pamidighantam Ramana, Colin Sheppard
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Patent number: 7091057Abstract: First and second n-doped regions are formed at a surface of a p-doped single crystal silicon substrate. An aluminum layer is patterned overlying some of the second n-doped regions to form thermal actuators. A dielectric layer is deposited overlying the patterned aluminum layer and an underlying thermal oxide layer. A metal layer is deposited thereover and patterned to form bond pads to the thermal actuators and to form reflecting mirror surfaces overlying others of the second n-doped regions to form micromirrors. The substrate is etched away from the backside stopping at the first and second n-doped regions. Then the wafer is diced into mirror array chips. Portions of the first n-doped regions are etched away from the frontside to form flexible springs wherein the second n-doped regions covered by the patterned aluminum layer form thermal actuators and wherein the flexible springs connect the micromirrors to the thermal actuators.Type: GrantFiled: December 19, 2003Date of Patent: August 15, 2006Assignee: Agency for Science, Technology and ResearchInventors: Chih Kiong Terence Gan, Ajay Agarwal, Janak Singh, Xiaolin Zhang
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Publication number: 20060141659Abstract: In a 3D free space micromirror device, a mirror plate is joined with actuators through flexible springs where the other ends of the actuators have fixed support on the substrate. Single crystal silicon and aluminum are used as bi-morph materials with silicon dioxide providing electrical isolation between the two. Thickness variation in the microstructure is achieved by two-step p-n junction formed in a p-type substrate. Thick and thin n-silicon layer formation and DRIE cut mechanisms are employed in such a way that all the thick and thin silicon components of the structure are released simultaneously avoiding overetch which can be detrimental to the thin flexural springs. Working prototypes of the device have been found suitable for any optical switching array architecture where deflections up to 10 degrees are required.Type: ApplicationFiled: February 2, 2006Publication date: June 29, 2006Inventors: Chih Kiong Gan, Ajay Agarwal, Janak Singh, Xiaolin Zhang
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Publication number: 20050136663Abstract: In a 3D free space micromirror device, a mirror plate is joined with actuators through flexible springs where the other ends of the actuators have fixed support on the substrate. Single crystal silicon and aluminum are used as bi-morph materials with silicon dioxide providing electrical isolation between the two. Thickness variation in the microstructure is achieved by two-step p-n junction formed in a p-type substrate. Thick and thin n-silicon layer formation and DRIE cut mechanisms are employed in such a way that all the thick and thin silicon components of the structure are released simultaneously avoiding overetch which can be detrimental to the thin flexural springs. Working prototypes of the device have been found suitable for any optical switching array architecture where deflections up to 10 degrees are required.Type: ApplicationFiled: December 19, 2003Publication date: June 23, 2005Inventors: Chih Terence Gan, Ajay Agarwal, Janak Singh, Xiaolin Zhang
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Patent number: 6858459Abstract: Method of fabricating a micro-mirror switching device in single crystal silicon are described. The device is fabricated as three main elements: silicon mirror plate with metal-mirror, secondary actuator, and hinge/spring mechanism to integrate the mirror plate with the actuator. p-n junction is first formed on p-type silicon. Trenches are then etched in n-silicon to define the device element boundaries and filled with silicon dioxide. Three layers of sacrificial oxide and two structural poly-silicon layers are deposited and patterned to form device elements. Novel release processes, consisting of backside electrochemical etching in potassium-hydroxide, reactive ion etching to expose oxide-filled trenches from the bottom, and hydrofluoric acid etching of sacrificial oxide layers and oxide in silicon trenches, form the silicon blocks; those that are not attached to structural poly-silicon are sacrificed and those that are attached are left in place to hold together the switching device elements.Type: GrantFiled: May 23, 2002Date of Patent: February 22, 2005Assignee: Institute of MicroelectronicsInventors: Janak Singh, Uppili Sridhar, Ranganathan Nagarajan, Quanbo Zou
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Patent number: 6808644Abstract: A process to form a capillary that is well insulated from its environment is described. Said process has two stages. The first stage, which is the same for both of the invention's two embodiments, comprises forming a micro-channel in the surface of a sheet of glassy material. For the first embodiment, this sheet is bonded to a layer of oxide, that lies on the surface of a sheet of silicon, thereby sealing in the capillary. After all silicon has been selectively removed, a thin membrane of oxide remains. Using a low temperature bonding process, a second sheet of glassy material is then bonded to this membrane. In the second embodiment, the silicon is not fully removed. Instead, the oxide layer of the first embodiment is replaced by an oxide/nitride/oxide trilayer which provides improved electrical insulation between the capillary and the remaining silicon at a lower level of inter-layer stress.Type: GrantFiled: May 2, 2002Date of Patent: October 26, 2004Assignee: Institute of MicroelectronicsInventors: Yu Chen, Janak Singh
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Publication number: 20040138439Abstract: Method for the production of C-aryl glucoside SGLT2 inhibitors useful for the treatment of diabetes and related diseases. and intermediates thereof. The C-aryl glucosides may be complexed with amino acid complex forming reagents.Type: ApplicationFiled: December 23, 2003Publication date: July 15, 2004Inventors: Prashant P. Deshpande, Bruce A. Ellsworth, Janak Singh, Theodor W. Denzel, Chiajen Lai, Gerard Crispino, Michael E. Randazzo, Jack Z. Gougoutas