Patents by Inventor John Mathai
John Mathai 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: 20170177435Abstract: In some cases, a wireless sensor device includes a radio frequency (RF) processor system. The RF processor system includes a forward error correction (FEC) device, a digital signal processor (DSP) device and a shared memory device that is connected between the FEC device and the DSP device. The DSP device is directly connected to the shared memory device and configured to selectively access individual memory elements of the shared memory device. The FEC device is directly connected to the shared memory device and configured to collectively access arrays of memory elements of the shared memory device.Type: ApplicationFiled: December 16, 2015Publication date: June 22, 2017Applicant: Cognitive Systems Corp.Inventors: Karanvir Chattha, William Suriaputra, Nebu John Mathai
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Publication number: 20170177542Abstract: In some aspects of what is described, a wireless sensor device includes a radio frequency (RF) processor system. The RF processor system includes a very large instruction word (VLIW) processor device that has multiple execution units. The RF processor system also includes storage units and an interconnect device. The storage units store instruction words to be routed to the execution units. The interconnect device provides connectivity between the storage units and the execution units. The interconnect device is adapted to route instruction words from storage units to respective execution units according to routing indices for each clock cycle of the VLIW device.Type: ApplicationFiled: December 16, 2015Publication date: June 22, 2017Applicant: Cognitive Systems Corp.Inventors: Karanvir Chattha, Nebu John Mathai
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Patent number: 8793298Abstract: A reconfigurable digital signal filter processing unit for use in a communication device is provided. The reconfigurable filters processor can implement different filter topologies to adapt to a range or wireless technology characteristics. The reconfigurable filter processor comprises a plurality of filter blocks whose inputs can be selected based on the desired configuration of the filter. Each filter block applies a transfer function to a received signal to achieve a desired filtering function.Type: GrantFiled: November 1, 2010Date of Patent: July 29, 2014Assignee: BlackBerry LimitedInventors: Nebu John Mathai, Oleksiy Kravets
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Patent number: 8766729Abstract: An apparatus, and an associated method, for synthesizing a discrete-valued oscillating signal. Input parameters are provided that are determinative of the frequency, gain, and phase characteristics of the resultant, oscillating signal. The discrete-valued, oscillating signal is combinable with another signal to form a mixed signal of a desired frequency, gain, and phase characteristic using a single complex multiplication operation.Type: GrantFiled: October 5, 2011Date of Patent: July 1, 2014Assignee: BlackBerry LimitedInventors: Nebu John Mathai, Stephen Arnold Devison, Oleksiy Kravets
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Publication number: 20130088303Abstract: An apparatus, and an associated method, for synthesizing a discrete-valued oscillating signal. Input parameters are provided that are determinative of the frequency, gain, and phase characteristics of the resultant, oscillating signal. The discrete-valued, oscillating signal is combinable with another signal to form a mixed signal of a desired frequency, gain, and phase characteristic using a single complex multiplication operation.Type: ApplicationFiled: October 5, 2011Publication date: April 11, 2013Applicant: RESEARCH IN MOTION LIMITEDInventors: Nebu John Mathai, Stephen Arnold Devison, Oleksiy Kravets
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Publication number: 20120110051Abstract: A reconfigurable digital signal filter processing unit for use in a communication device is provided. The reconfigurable filters processor can implement different filter topologies to adapt to a range or wireless technology characteristics. The reconfigurable filter processor comprises a plurality of filter blocks whose inputs can be selected based on the desired configuration of the filter. Each filter block applies a transfer function to a received signal to achieve a desired filtering function.Type: ApplicationFiled: November 1, 2010Publication date: May 3, 2012Applicant: Research In Motion LimitedInventors: Nebu John MATHAI, Oleksiy Kravets
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Patent number: 5399611Abstract: This invention relates to novel hydroxy-functional polyester diluents, and more particularly, to acrylic-modified hydroxy-functional polyester reactive diluents useful for blending with a variety of thermosetting or thermoplastic film-forming polymers. More specifically, the hydroxy-functional polyester reactive diluents are essentially low molecular weight polyesters derived from triols, and a combination of unsaturated monocarboxylic acids and saturated monocarboxylic acids. These hydroxy-functional polyester diluents may be copolymerized with one or more acrylic monomers, i.e. hydroxy-functional acrylic monomers, and blended with a variety of thermosetting or thermoplastic film-forming polymers. These blends of the film-forming polymers and the hydroxy-functional polyester diluents can be crosslinked with conventional crosslinking agents such as isocyanates and used in the formulation of low VOC paint compositions particularly useful as automotive topcoats.Type: GrantFiled: September 27, 1993Date of Patent: March 21, 1995Assignee: The Sherwin-Williams CompanyInventor: John Mathai
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Patent number: 5248717Abstract: This invention relates to novel hydroxy-functional polyester diluents, and more particularly, to acrylic-modified hydroxy-functional polyester reactive diluents useful for blending with a variety of thermosetting or thermoplastic film-forming polymers. More specifically, the hydroxy-functional polyester reactive diluents are essentially low molecular weight polyesters derived from triols, and a combination of unsaturated monocarboxylic acids and saturated monocarboxylic acids. These hydroxy-functional polyester diluents may be copolymerized with one or more acrylic monomers, i.e. hydroxy-functional acrylic monomers, and blended with a variety of thermosetting or thermoplastic film-forming polymers. These blends of the film-forming polymers and the hydroxy-functional polyester diluents can be crosslinked with conventional crosslinking agents such as isocyanates and used in the formulation of low VOC paint compositions particularly useful as automotive topcoats.Type: GrantFiled: December 31, 1991Date of Patent: September 28, 1993Assignee: The Sherwin-Williams CompanyInventor: John Mathai
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Patent number: 5104955Abstract: This invention relates to novel hydroxy-functional polyester diluents, and more particularly, to acrylic-modified hydroxy-functional polyester reactive diluents useful for blending with a variety of thermosetting or thermoplastic film-forming polymers. More specifically, the hydroxy-functional polyester reactive diluents are essentially low molecular weight polyesters derived from triols, and a combination of unsaturated monocarboxylic acids and saturated monocarboxylic acids. These hydroxy-functional polyester diluents may be copolymerized with one or more acrylic monomers, i.e. hydroxy-functional acrylic monomers, and blended with a variety of thermosetting or thermoplastic film-forming polymers. These blends of the film-forming polymers and the hydroxy-functional polyester diluents can be crosslinked with conventional crosslinking agents such as isocyanates and used in the formulation of low VOC paint compositions particularly useful as automotive topcoats.Type: GrantFiled: December 19, 1988Date of Patent: April 14, 1992Assignee: The Sherwin-Williams CompanyInventor: John Mathai
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Patent number: 5004828Abstract: This invention relates to novel hydroxy-functional polyester diluents, and more particularly, to acrylic-modified hydroxy-functional polyester reactive diluents useful for blending with a variety of thermosetting or thermoplastic film-forming polymers. More specifically, the hydroxy-functional polyester reactive diluents are essentially low molecular weight polyesters derived from triols, and a combination of unsaturated monocarboxylic acids and saturated monocarboxylic acids. These hydroxy-functional polyester diluents may be compolymerized with one or more acrylic monomers, i.e. hydroxy-functional acrylic monomers, and blended with a variety of thermosetting or thermoplastic film-forming polymers. These blends of the film-forming polymers and the hydroxy-functional polyester diluents can be crosslinked with conventional crosslinking agents as isocyanates and used in the formulation of low VOC paint compositions particularly useful as automotive topcoats.Type: GrantFiled: April 27, 1987Date of Patent: April 2, 1991Assignee: The Sherwin-Williams CompanyInventor: John Mathai
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Patent number: 4362770Abstract: Disclosed is a primer-surfacer composition comprising a vehicle of a balanced acrylic polymer of methyl methacrylate, butyl methacrylate and methacrylic acid, the resultant polymer having an acid value in the range of about 25 to 35, the polymer having a relative viscosity of about 16 to 32 poise measured at 40% polymer solids in a toluene and isopropyl alcohol solvent at 25.degree. C. The primer-surfacer may also contain dispersed pigments and/or fillers such as carbon blacks, talc, iron oxide, clay, etc. The primer-surfacer composition is primarily used over unprimed, primed or previously finished metal or plastic substrates to provide a surface to which an acrylic lacquer, an acrylic enamel, an alkyd enamel or a polyurethane enamel coating can be applied. The primer-surfacer of this invention may be easily sanded to provide a finish for vehicles of excellent intercoat adhesion, excellent chip and corrosion resistance and excellent fill.Type: GrantFiled: April 2, 1981Date of Patent: December 7, 1982Assignee: The Sherwin-Williams CompanyInventors: John Mathai, Larry J. Morrison
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Patent number: 4124551Abstract: This invention relates to novel fast-drying aliphatic solvent soluble acrylic-styrene polymer vehicles of paramount value as the binder vehicle for enamels and particularly for automotive after-market refinishing.Improvement in the quality and durability of automotive enamels in general has been outstanding with the advent of acrylic polymers useful as the adhesive binder in coatings for cars. When applied in production lines to automobile bodies originally under factory conditions, the use of high solvency enamel solvents and reducers has been a relatively obscure problem until recognition of the contribution of aromatic hydrocarbons solvents to smog development. Priorly curing or drying automotive paint films at a rapid speed has been feasible with elevated temperatures with little or no concern for energy consumption or atmospheric pollution. Large capital expenditures for high production rates with concurrent energy consumption have been heretofore acceptable generally.Type: GrantFiled: September 26, 1977Date of Patent: November 7, 1978Assignee: The Sherwin-Williams CompanyInventors: John Mathai, Thomas W. Druetzler
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Patent number: 4101527Abstract: Polymer forming reactions have been previously known comprising five and six member oxazoline ring oxazolidines and reaction products containing the basic structure with polyfunctional aromatic and aliphatic isocyanates and moisture. Five types of oxazolidines have been previously illustrated. Use of these polymeric products have been found to be limited as the class of oxazolidines described in the prior art result in objectionable dark colored products. This invention relates to an advance thereover in providing light colored end products by use of a novel and specific dioxazabicyclo octanes, a substituted specialized class of oxazolidine ring compounds.Type: GrantFiled: February 18, 1977Date of Patent: July 18, 1978Assignee: The Sherwin-Williams CompanyInventors: Arthur L. Cunningham, John Mathai