Patents by Inventor T. Raj
T. Raj 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: 20100076199Abstract: The present invention relates to methods for the preparation of pyridone carboxylic acids for use as intermediates in the preparation of various synthetic organic compounds. The pyridone carboxylic acids can for example be used as intermediates in the production of potent antitumor agents, antifungal agents, antiviral agents, psychotherapeutic agents or contrast imaging agents for MRI.Type: ApplicationFiled: September 17, 2009Publication date: March 25, 2010Applicant: GE HEALTHCARE ASInventors: VIJAYA RAJ KUNIYIL KULANGARA, TILAK T. RAJ
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Publication number: 20090326181Abstract: A polycarbonate polymer or copolymer comprising pendant silylated dihydroxy aromatic compound of the formula (1a); wherein Ga and Gb are each independently C1-12 alkyl, —OSi(C1-12 alkyl)3, C1-12 arylalkyl, or —OSi(C1-12 arylalkyl)3; Za and Zb are each independently a straight or branched C2-18 is alkylene, a C8-18 arylalkylene, or a C8-18 alkylarylene, Xa is a direct bond, a heteroatom-containing group, or a C1-18 organic group, and r and s are each independently 1 or 2 is disclosed.Type: ApplicationFiled: September 8, 2009Publication date: December 31, 2009Applicant: MOMENTIVE PERFORMANCE MATERIALS INC.Inventors: Jan Pleun LENS, Tilak T. RAJ, Binod Behari SAHOO, Arakali Sreenivasarao Radhakrishna
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Publication number: 20080306294Abstract: A silylated dihydroxy aromatic compound of the formula (1a); wherein Ga and Gb are each independently C1-12 alkyl, —OSi(C1-12 alkyl)3, C1-12 arylalkyl, or —OSi(C1-12 arylalkyl)3; Za and Zb are each independently a straight or branched C2-18 alkylene, a C8-18 arylalkylene, or a C8-18 alkylarylene, Xa is a direct bond, a heteroatom-containing group, or a C1-18 organic group, and r and s are each independently 1 or 2 is disclosed.Type: ApplicationFiled: December 21, 2007Publication date: December 11, 2008Applicant: MOMENTIVE PERFORMANCE MATERIALS INC.Inventors: Jan Pleun Lens, Tilak T. Raj, Binod Behari Sahoo, Arakali Sreenivasarao Radhakrishna
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Publication number: 20070260033Abstract: Disclosed herein is a process for preparing a polymer comprising structural units derived from polycyclic dihydroxy compound having Formula (I), wherein R1 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic functionality having 1 to 10 carbons, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; R2 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; and each R3 and R4, at each occurrence, can be the same or different and are independently at each occurrence an aliphatic functionality having 1 to 10 carbons or a cycloaliphatic functionality having 3 to 10 carbons, “n” is an integer having a value 0 to 4 and “m” is an integer hType: ApplicationFiled: March 29, 2007Publication date: November 8, 2007Applicant: GENERAL ELECTRIC COMPANYInventors: Jan Kamps, Jan-Pleun Lens, James Mahood, Arakali Radhakrishna, T. Raj, Ravindra Singh
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Publication number: 20070123682Abstract: A polymer comprising structural units derived from a polycyclic dihydroxy compound of Formula (I) wherein R1, R2 and R3 are independently at each occurrence selected from the group consisting of a cyano functionality, a halogen, an aliphatic functionality having 1 to 10 carbons, a cycloaliphatic functionality having 3 to 10 carbons, and an aromatic functionality having 6 to 10 carbons; wherein each occurrence of “n”, “m”, and “p” independently has a value of 0, 1, 2, 3, or 4; and wherein the polymer is substantially linear.Type: ApplicationFiled: November 29, 2005Publication date: May 31, 2007Inventors: T. Raj, A.S. Radhakrishna, Jan-Pleun Lens, Subrahmanya K., Umesh Hasyagar, Subash Scindia
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Publication number: 20070123713Abstract: A process of forming a polycyclic dihydroxy compound is described. The polycyclic dihydroxy compound has Formula (I) wherein R1, R2 and R3 are independently at each occurrence selected from the group consisting of a cyano functionality, a halogen, an aliphatic functionality having 1 to 10 carbons, a cycloaliphatic functionality having 3 to 10 carbons, and an aromatic functionality having 6 to 10 carbons; and wherein each occurrence of “n”, “m”, and “p” independently has a value of 0, 1, 2, 3, or 4. Also described are polycyclic dihydroxy compounds of Formula (I) in which the phthalimide group is meta to the triaryl-substituted carbon.Type: ApplicationFiled: November 29, 2005Publication date: May 31, 2007Inventors: T. Raj, A.S. Radhakrishna, Jan-Pleun Lens, Subrahmanya K., Umesh Hasyagar
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Publication number: 20070100113Abstract: A polycarbonate comprises structural units derived from a polycyclic dihydroxy compound of Formula (I) wherein R1 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic functionality having 1 to 10 carbons, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; R2 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; and R3 and R4 are independently at each occurrence a hydrogen, an aliphatic functionality having 1 to 10 carbons or a cycloaliphatic functionality having 3 to 10 carbons.Type: ApplicationFiled: October 28, 2005Publication date: May 3, 2007Inventors: Jan Kamps, Jan-Pleun Lens, James Mahood, A.S. Radhakrishna, T. Raj, Ravindra Singh
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Publication number: 20070100156Abstract: A dihydroxy aromatic compound having a Formula (I) wherein R1 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic functionality having 1 to 10 carbons, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; R2 is selected from the group consisting of a cyano functionality, a nitro functionality, an aliphatic ester functionality having 2 to 10 carbons, a cycloaliphatic ester functionality having 4 to 10 carbons and an aromatic ester functionality having 4 to 10 carbons; and each R3 and R4, at each occurrence, can be the same or different and are independently at each occurrence an aliphatic functionality having 1 to 10 carbons or a cycloaliphatic functionality having 3 to 10 carbons, “n” is an integer having a value 0 to 4 and “m” is an integer having a value 0 to 4.Type: ApplicationFiled: October 28, 2005Publication date: May 3, 2007Applicant: General Electric CompanyInventors: Jan Kamps, Jan-Pleun Lens, A.S. Radhakrishna, T. Raj, Ravindra Singh
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Patent number: 7186853Abstract: The invention relates to phosphites comprising substituted or unsubstituted tricyclodecylmethyl groups. The phosphites may also contain substituted and unsubstituted alcohols having about C6–C18 carbon atoms. The alcohol chain may be aliphatic, arylakyl and alkylaryl groups. The method of making of the phosphite composition is also described.Type: GrantFiled: June 5, 2003Date of Patent: March 6, 2007Assignee: Crompton CorporationInventors: William Palmer Enlow, Marshall D. Moore, Vaikunth Sitaram Prabhu, Tilak T. Raj, Arakali S. Radhakrishna, Timmanna Upadhya, Surendra U. Kulkarni
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Patent number: 6919389Abstract: The invention discloses a stabilized resin composition comprising a thermoplastic resin and a stabilizing benzimidazole based additive compound. In a second embodiment, the invention discloses a method to make a stabilized composition comprising a benzimidazole based stabilizing compound and a resin, said method comprising mixing said benzimidazole based stabilizing compound with said resin.Type: GrantFiled: March 13, 2003Date of Patent: July 19, 2005Assignee: Crompton CorporationInventors: William Palmer Enlow, Marshall D. Moore, Vaikunth Sitaram Prabhu, Tilak T. Raj, Arakali Srinivasarao Radhakrishna, Raju Kharatkar
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Publication number: 20040249030Abstract: The invention relates to phosphites comprising substituted or unsubstituted tricyclodecylmethyl groups. The phosphites may also contain substituted and unsubstituted alcohols having about C6-C18 carbon atoms. The alcohol chain may be aliphatic, arylakyl and alkylaryl groups. The method of making of the phosphite composition is also described.Type: ApplicationFiled: June 5, 2003Publication date: December 9, 2004Inventors: William Palmer Enlow, Marshall D. Moore, Vaikunth Sitaram Prabhu, Tilak T. Raj, A. S. Radhakrishna, Timmanna Upadhya, Surendra U. Kulkarni
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Publication number: 20040180995Abstract: The invention discloses a stabilised resin composition comprising a thermoplastic resin and a stabilizing benzimidazole based additive compound. In a second embodiment, the invention discloses a method to make a stabilized composition comprising a benzimidazole based stabilising compound and a resin, said method comprising mixing said benzimidazole based stabilising compound with said resin.Type: ApplicationFiled: March 13, 2003Publication date: September 16, 2004Inventors: William Palmer Enlow, Marshall D. Moore, Vaikunth Sitaram Prabhu, Tilak T. Raj, A. S. Radhakrishna, Raju Kharatkar
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Patent number: 5608803Abstract: A programmable customized universal digital listening system is provided with one or more digital signal processor chips which are implemented as one or more digital filters whose parameters are established by one or more erasable programmable read-only memories (EPROMs). The information included in the EPROMs directed to the parameters of the digital filters are determined based upon the user's response to various audio signals provided from an audiologist. Based upon these responses, the EPROMs are programmed. Additionally, this listening system is provided with an additional digital filter which changes its responses based upon the frequency of any background noise.Type: GrantFiled: May 17, 1995Date of Patent: March 4, 1997Assignee: The University of New MexicoInventors: Neeraj Magotra, T. Raj Natarajan, Frank Livingston, Sarala R. Gopalan
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Patent number: 5033788Abstract: A combined hard top and convertible top car comprises a car and a cap which has the configuration of the convertible top when the top is in up or elevated position and overlies the convertible top. The cap comprises of top wall, a rear wall, a rear wall and side walls. The cap includes front flanges along the front edge of the top wall which engage under the front edge of the convertible top, rear flanges along the rear wall which engage under the front edge of the car body adjacent the rear wall of the convertible top and side flanges along the side walls that engage the sides of the car body.Type: GrantFiled: March 6, 1990Date of Patent: July 23, 1991Assignee: Evans Automotive, Division of Evans Industries Inc.Inventor: Joseph T. Raj
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Patent number: 5020848Abstract: A customized automobile body and method of changing the appearance of an automobile utilizing a plastic body that has a recess that is adapted to overlie at least a portion of a window of the automobile body, the recess having a base wall and a peripheral wall merging with the remainder of the plastic body. In one embodiment, the recess is filled with a filler and the plastic body is covered with a plastic sheet or woven cloth sheet. In another embodiment, a plastic louver assembly is inserted in the recess. In another embodiment, the base wall of the recess is cut away to expose a portion of the window. In a further embodiment, the window is covered with an overlay of a deeply tinted transparent panel. In one form, the plastic body is a roof cap. In another form, the plastic body overlies a door of the automobile.Type: GrantFiled: December 22, 1988Date of Patent: June 4, 1991Assignee: Evans Industries, Inc.Inventor: Joseph T. Raj
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Patent number: 5009938Abstract: A customized automobile having a rear window and a top including a plastic cap overlying the rear window and a portion of the top and one or more sections provided in partially overlapping relation. The plastic cap and sections are provided with a cloth covering. In one form, each section includes a transverse raised portion to simulate the support structure of a convertible. The cap and sections may be provided in a kit so that the plastic cap maybe used alone or together with one or more section.Type: GrantFiled: February 5, 1990Date of Patent: April 23, 1991Assignee: Evans Automotive, Division of Evans Industries, Inc.Inventor: Joseph T. Raj
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Patent number: 5010480Abstract: A Digital Service (DS) interface interfaces a Personal Computer (PC) to the DS directly at the PC's data bus. The DS interface has independent transmit and receive memories for transmitting and receiving the digital data at high speeds. FIFO memories buffer data between the PC's data bus and the DS interface prior to being converted to bipolar digital signals before transmission and after being received and converted to amplitude discrete digital signals from bipolar digital signals.Type: GrantFiled: July 21, 1987Date of Patent: April 23, 1991Assignee: DSP TechnologyInventor: T. Raj Natarajan
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Patent number: 4937856Abstract: A conferencing bridge provides conferencing capabilities for a plurality of input lines and for a plurality of output lines. The conferencing bridge has a signal processor which processes the audio information transferred between the input lines and the output lines. A plurality of codecs analog to digital conversion and digital to analog conversion for interfacing the signal processor to the plurality of input lines and output lines. A control processor is operatively connected to the signal processor and controls and operation of the signal processor as well as the conferencing bridge through number codes that are inputted to the conference bridge via the telephone key pad. A tone converter converts the inputted tones to digital information to which the control processor will respond. The signal processor provides not only identification of the telephone line on which a speaker is talking but also performs an amplitude adjustment so that there is a minimum loss involved for the conferencing network.Type: GrantFiled: June 1, 1987Date of Patent: June 26, 1990Inventor: T. Raj Natarajan
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Patent number: 4793650Abstract: A customized roof construction and method of making for changing the appearance of an automobile which has a side window opening wherein a portion of the body of the automobile covers a desired window position in the customized roof which comprises masking a portion of the window while leaving another portion of the window and the portion of the body associated with the window unmasked, applying a deeply tinted transparent panel over the unmasked portion of the window and the portion of the body where it is desired to provide the effect of the desired window, thereafter, applying a roof cap with a window opening corresponding substantially to the area of the tinted panel such as to provide a window having the substantially different configuration from the original window of the automobile with a portion of the window overlying a portion of the body of the automobile.Type: GrantFiled: September 28, 1987Date of Patent: December 27, 1988Assignee: Evans Automotive, Division of Evans Industries, Inc.Inventor: Joseph T. Raj