Patents by Inventor Reddy Vangala
Reddy Vangala 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: 9487482Abstract: The present invention relate to compounds of general formula A. The invention also provides the synthesis of 3,4,5-trimethoxystyrylarylaminopropenones useful as potential antitumor agents against human cancer cell lines and a process for the preparation thereof. wherein: R=H, OMe, Cl, F, OH, Me X=aryl, heteroaryl.Type: GrantFiled: April 17, 2015Date of Patent: November 8, 2016Assignee: Council of Scientific and Industrial ResearchInventors: Kamal Ahmed, Bharath Kumar Gajjela, Basha Shaik Anver, Santhosh Reddy Vangala, Rasala Mahesh
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Publication number: 20160308264Abstract: An RF dielectric waveguide duplexer filter module with antenna and lower and upper Tx and Rx signal transmission blocks of dielectric material attached together in a side-by-side and stacked relationship. The blocks are covered with conductive material. Antenna and Tx and Rx input/outputs are defined at opposite ends of the filter module. RF signal transmission windows define direct coupling RF signal transmission paths between the antenna and the Tx and Rx blocks and between the lower and upper Tx and Rx blocks. One or more bridges of dielectric material on the lower Tx and Rx blocks define inductive cross-coupling Tx and Rx signal transmission paths. The Tx signal is transmitted only in the direction of the antenna block or between the upper and lower Tx blocks. The Rx signal is transmitted only in the direction of the Rx RF signal input/output or between the upper and lower Rx blocks.Type: ApplicationFiled: June 30, 2016Publication date: October 20, 2016Applicant: CTS CorporationInventor: Reddy Vangala
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Patent number: 9466864Abstract: An RF duplexer waveguide filter module for the transmission and filtering of TX and RX RF signals comprising a substrate with TX and RX filter assemblies mounted thereon. One or both of the TX and RX filter assemblies comprises an RF waveguide filter assembly including a plurality of blocks of dielectric material coupled together in a side-by-side relationship. Each of the blocks of dielectric material defines at least one slit and at least one internal RF signal transmission window. One or both of the end blocks defines a step and a through-hole terminating in an opening in the step. In one embodiment, the RF duplexer waveguide filter module additionally comprises an RF antenna waveguide filter extending between and coupling the TX and RX filter assemblies to an antenna RF signal transmission line.Type: GrantFiled: April 9, 2015Date of Patent: October 11, 2016Assignee: CTS CorporationInventors: Alexandre Rogozine, Reddy Vangala, Nam Phan
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Patent number: 9437909Abstract: A waveguide filter comprising a base block of dielectric material defining at least first and second resonators and a bridge block seated on top of the base block and defining at least a third resonator. In one embodiment, the base block comprises first and second base blocks that have been coupled together in an end to end relationship. An external transmission line or an interior RF signal transmission window or an RF signal transmission bridge provides a cross-coupling RF signal transmission path between the first and second resonators. At least first and second interior RF signal transmission windows provide a direct RF signal transmission path between the first and third resonators and the second and third resonators respectively.Type: GrantFiled: September 2, 2015Date of Patent: September 6, 2016Assignee: CTS CorporationInventors: Reddy Vangala, Nam Phan
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Patent number: 9437908Abstract: A dielectric waveguide filter comprising a block of dielectric material including a plurality of resonators defined by a plurality of slots defined in the block of dielectric material. The resonators are arranged on the block of dielectric material in one or more rows and columns. First and second RF signal input/output electrodes are defined on the block of dielectric material. A first direct RF signal transmission path for the transmission of an RF signal is defined by the first and second RF signal input/output electrodes and the plurality of resonators. In one embodiment, internal windows define a first direct RF signal transmission means and additional RF signal transmission means define alternate or cross-coupling paths for the transmission of the RF signal from resonators in one column to resonators in another column. In one embodiment, the filter is comprised of two separate blocks of dielectric material which have been coupled together.Type: GrantFiled: May 11, 2015Date of Patent: September 6, 2016Assignee: CTS CorporationInventor: Reddy Vangala
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Patent number: 9431690Abstract: A dielectric waveguide filter comprising a block of dielectric material covered with an exterior layer of conductive material. A plurality of stacked resonators are defined in the block of dielectric material by one or more slots in the block of dielectric material and an interior layer of conductive material that separates the stacked resonators. First and second RF signal transmission windows in the interior layer of conductive material provide for both direct and cross-coupling RF signal transmission between the stacked resonators. In one embodiment, the waveguide filter is comprised of separate blocks of dielectric material each covered with an exterior layer of conductive material, each including one or more slots defining a plurality of resonators, and coupled together in a stacked relationship.Type: GrantFiled: September 2, 2015Date of Patent: August 30, 2016Assignee: CTS CorporationInventors: Alexandre Rogozine, Reddy Vangala
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Publication number: 20160087322Abstract: A waveguide filter comprising a base block of dielectric material defining at least first and second resonators and a bridge block seated on top of the base block and defining at least a third resonator. In one embodiment, the base block comprises first and second base blocks that have been coupled together in an end to end relationship. An external transmission line or an interior RF signal transmission window or an RF signal transmission bridge provides a cross-coupling RF signal transmission path between the first and second resonators. At least first and second interior RF signal transmission windows provide a direct RF signal transmission path between the first and third resonators and the second and third resonators respectively.Type: ApplicationFiled: September 2, 2015Publication date: March 24, 2016Inventors: Reddy Vangala, Nam Phan
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Publication number: 20150380792Abstract: A dielectric waveguide filter comprising a block of dielectric material covered with an exterior layer of conductive material. A plurality of stacked resonators are defined in the block of dielectric material by one or more slots in the block of dielectric material and an interior layer of conductive material that separates the stacked resonators. First and second RF signal transmission windows in the interior layer of conductive material provide for both direct and cross-coupling RF signal transmission between the stacked resonators. In one embodiment, the waveguide filter is comprised of separate blocks of dielectric material each covered with an exterior layer of conductive material, each including one or more slots defining a plurality of resonators, and coupled together in a stacked relationship.Type: ApplicationFiled: September 2, 2015Publication date: December 31, 2015Inventors: Alexandre Rogozine, Reddy Vangala
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Publication number: 20150322009Abstract: The present invention relate to compounds of general formula A. The invention also provides the synthesis of 3,4,5-trimethoxystyrylarylaminopropenones useful as potential antitumor agents against human cancer cell lines and a process for the preparation thereof.Type: ApplicationFiled: April 17, 2015Publication date: November 12, 2015Inventors: Kamal Ahmed, Bharath Kumar Gajjela, Basha Shaik Anver, Santhosh Reddy Vangala, Rasala Mahesh
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Publication number: 20150295294Abstract: An RF duplexer waveguide filter module for the transmission and filtering of TX and RX RF signals comprising a substrate with TX and RX filter assemblies mounted thereon. One or both of the TX and RX filter assemblies comprises an RF waveguide filter assembly including a plurality of blocks of dielectric material coupled together in a side-by-side relationship. Each of the blocks of dielectric material defines at least one slit and at least one internal RF signal transmission window. One or both of the end blocks defines a step and a through-hole terminating in an opening in the step. In one embodiment, the RF duplexer waveguide filter module additionally comprises an RF antenna waveguide filter extending between and coupling the TX and RX filter assemblies to an antenna RF signal transmission line.Type: ApplicationFiled: April 9, 2015Publication date: October 15, 2015Inventors: Alexandre Rogozine, Reddy Vangala, Nam Phan
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Patent number: 9130258Abstract: A waveguide filter comprising a base block of dielectric material defining at least first and second resonators and a bridge block seated on top of the base block and defining at least a third resonator. In one embodiment, the base block comprises first and second base blocks that have been coupled together in an end to end relationship. An external transmission line or an interior RF signal transmission window or an RF signal transmission bridge provides a cross-coupling RF signal transmission path between the first and second resonators. At least first and second interior RF signal transmission windows provide a direct RF signal transmission path between the first and third resonators and the second and third resonators respectively.Type: GrantFiled: September 18, 2014Date of Patent: September 8, 2015Assignee: CTS CORPORATIONInventors: Reddy Vangala, Nam Phan
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Patent number: 9130256Abstract: A dielectric waveguide filter which, in one embodiment, is comprised of a plurality of monoblocks coupled together in a side-by-side relationship. In one embodiment, the waveguide filter includes two end monoblocks and two interior monoblocks each defining two resonators. First and second RF signal input/output electrodes are defined on the two end monoblocks. In one embodiment, a direct RF signal transmission path is defined in part by the combination of the resonators, RF signal transmission bridges on each of the monoblocks that interconnect the resonators on each of the monoblocks, and RF signal transmission windows between and interconnecting the resonators of adjacent monoblocks. In one embodiment, alternate or cross-coupling RF signal transmission paths are defined by external RF signal transmission lines that extend between adjacent monoblocks.Type: GrantFiled: May 29, 2014Date of Patent: September 8, 2015Assignee: CTS CORPORATIONInventors: Alexandre Rogozine, Reddy Vangala
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Patent number: 9130255Abstract: A dielectric waveguide filter comprising a block of dielectric material covered with an exterior layer of conductive material. A plurality of stacked resonators are defined in the block of dielectric material by one or more slots in the block of dielectric material and an interior layer of conductive material that separates the stacked resonators. First and second RF signal transmission windows in the interior layer of conductive material provide for both direct and cross-coupling RF signal transmission between the stacked resonators. In one embodiment, the waveguide filter is comprised of separate blocks of dielectric material each covered with an exterior layer of conductive material, each including one or more slots defining a plurality of resonators, and coupled together in a stacked relationship.Type: GrantFiled: November 25, 2013Date of Patent: September 8, 2015Assignee: CTS CORPORATIONInventors: Alexandre Rogozine, Reddy Vangala
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Patent number: 9130257Abstract: A structure and method for adjusting the bandwidth of a ceramic waveguide filter comprising, in one embodiment, a monoblock of dielectric ceramic material defining respective steps and respective input/output through-holes extending through the monoblock and the respective steps. In one embodiment, the steps are defined by notches in the monoblock and the input/output through-holes define openings terminating in the notch. The bandwidth of the ceramic waveguide filter may be adjusted by adjusting the height/thickness and direction of the steps relative to an exterior surface of the monoblock and/or the diameter of the input/output through-holes.Type: GrantFiled: August 25, 2014Date of Patent: September 8, 2015Assignee: CTS CORPORATIONInventor: Reddy Vangala
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Publication number: 20150244049Abstract: A dielectric waveguide filter comprising a block of dielectric material including a plurality of resonators defined by a plurality of slots defined in the block of dielectric material. The resonators are arranged on the block of dielectric material in one or more rows and columns. First and second RF signal input/output electrodes are defined on the block of dielectric material. A first direct RF signal transmission path for the transmission of an RF signal is defined by the first and second RF signal input/output electrodes and the plurality of resonators. In one embodiment, internal windows define a first direct RF signal transmission means and additional RF signal transmission means define alternate or cross-coupling paths for the transmission of the RF signal from resonators in one column to resonators in another column. In one embodiment, the filter is comprised of two separate blocks of dielectric material which have been coupled together.Type: ApplicationFiled: May 11, 2015Publication date: August 27, 2015Inventor: Reddy Vangala
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Patent number: 9030279Abstract: A dielectric waveguide filter comprising a block of dielectric material including a plurality of resonators defined by a plurality of slots defined in the block of dielectric material. The resonators are arranged on the block of dielectric material in one or more rows and columns. First and second RF signal input/output electrodes are defined on the block of dielectric material. A first direct RF signal transmission path for the transmission of an RF signal is defined by the first and second RF signal input/output electrodes and the plurality of resonators. In one embodiment, internal windows define a first direct RF signal transmission means and additional RF signal transmission means define alternate or cross-coupling paths for the transmission of the RF signal from resonators in one column to resonators in another column. In one embodiment, the filter is comprised of two separate blocks of dielectric material which have been coupled together.Type: GrantFiled: December 3, 2011Date of Patent: May 12, 2015Assignee: CTS CorporationInventor: Reddy Vangala
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Publication number: 20150084720Abstract: A waveguide filter comprising a base block of dielectric material defining at least first and second resonators and a bridge block seated on top of the base block and defining at least a third resonator. In one embodiment, the base block comprises first and second base blocks that have been coupled together in an end to end relationship. An external transmission line or an interior RF signal transmission window or an RF signal transmission bridge provides a cross-coupling RF signal transmission path between the first and second resonators. At least first and second interior RF signal transmission windows provide a direct RF signal transmission path between the first and third resonators and the second and third resonators respectively.Type: ApplicationFiled: September 18, 2014Publication date: March 26, 2015Applicant: CTS CorporationInventors: Reddy Vangala, Nam Phan
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Patent number: 8969558Abstract: There is provided a process for preparation of sitagliptin of Formula II or a pharmaceutically acceptable salt thereof by deprotection of Formula IX.Type: GrantFiled: December 5, 2013Date of Patent: March 3, 2015Assignee: Dr. Reddy's Laboratories LimitedInventors: Pratap Reddy Padi, Babu Ireni, Srinivas Polavarapu, Shailaja Padamata, Kavitha Nerella, Vijaya Anand Ramasamy, Ranga Reddy Vangala
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Publication number: 20140361853Abstract: A structure and method for adjusting the bandwidth of a ceramic waveguide filter comprising, in one embodiment, a monoblock of dielectric ceramic material defining respective steps and respective input/output through-holes extending through the monoblock and the respective steps. In one embodiment, the steps are defined by notches in the monoblock and the input/output through-holes define openings terminating in the notch. The bandwidth of the ceramic waveguide filter may be adjusted by adjusting the height/thickness and direction of the steps relative to an exterior surface of the monoblock and/or the diameter of the input/output through-holes.Type: ApplicationFiled: August 25, 2014Publication date: December 11, 2014Applicant: CTS CORPORATIONInventor: Reddy Vangala
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Publication number: 20140266514Abstract: A dielectric waveguide filter which, in one embodiment, is comprised of a plurality of monoblocks coupled together in a side-by-side relationship. In one embodiment, the waveguide filter includes two end monoblocks and two interior monoblocks each defining two resonators. First and second RF signal input/output electrodes are defined on the two end monoblocks. In one embodiment, a direct RF signal transmission path is defined in part by the combination of the resonators, RF signal transmission bridges on each of the monoblocks that interconnect the resonators on each of the monoblocks, and RF signal transmission windows between and interconnecting the resonators of adjacent monoblocks. In one embodiment, alternate or cross-coupling RF signal transmission paths are defined by external RF signal transmission lines that extend between adjacent monoblocks.Type: ApplicationFiled: May 29, 2014Publication date: September 18, 2014Applicant: CTS CorporationInventors: Alexandre Rogozine, Reddy Vangala