Inventors list |
Assignees list |
Classification tree browser |
Top 100 Inventors |
Top 100 Assignees |
Chari, NY
Krishnan Chari, Fairport, NY US
| Patent application number | Description | Published |
|---|---|---|
| 20080310186 | LIGHT EMITTING DEVICE WITH MICROLENS ARRAY - A method of manufacturing a micro-lens array and light-emitting device, comprising forming a first structured polymer film with close packed surface cavities having a mean diameter of less than 20 micrometers and a relatively lower surface energy surface, forming a transparent second structured film with an array of microlenses formed thereon corresponding to the cavities of the first structured film, wherein the second structured film comprises a relatively high surface energy material and has a refractive index greater than 1.45, and wherein the microlenses are randomly distributed, separating the second structured film with the micro-lens array from the first structured polymer film, and attaching the second structured film to a transparent substrate or cover of a light-emitting device through which light is emitted. Use of microlens arrays formed from relatively high surface energy materials enables matching refractive index of microlens array to that of light-emitting devices substrate or cover through which light is emitted and relatively high elastic modulus providing good scratch resistance. | 12-18-2008 |
| 20090092770 | Sensitized photochemical switching for cholesteric liquid crystal displays - The present invention relates to photo-tunable dopant compositions comprising a photo-reactive chiral compound capable of undergoing a photochemical reaction resulting in the loss of chirality, and a triplet sensitizer. The present invention also relates to a display comprising a substrate, a liquid crystalline layer thereon, wherein the liquid crystalline layer comprises a nematic host, at least one chiral dopant, a photo-reacted compound, and a triplet sensitizer, and at least one transparent conductive layer. The present invention also relates to a method of tuning a cholesteric liquid crystal material comprising providing at least one mesogenic compound, at least one triplet sensitizer, and at least one photo-reactive chiral compound; combining the at least one mesogenic compound, at least one triplet sensitizer, and at least one photo-reactive chiral compound to form a mixture; and irradiating the mixture for a period of time. | 04-09-2009 |
| 20090092907 | Sensitized photochemical switching for cholesteric liquid crystal displays - The present invention relates to photo-tunable dopant compositions comprising a photo-reactive chiral compound capable of undergoing a photochemical reaction resulting in the loss of chirality, and a triplet sensitizer. The present invention also relates to a display comprising a substrate, a liquid crystalline layer thereon, wherein the liquid crystalline layer comprises a nematic host, at least one chiral dopant, a photo-reacted compound, and a triplet sensitizer, and at least one transparent conductive layer. The present invention also relates to a method of tuning a cholesteric liquid crystal material comprising providing at least one mesogenic compound, at least one triplet sensitizer, and at least one photo-reactive chiral compound; combining the at least one mesogenic compound, at least one triplet sensitizer, and at least one photo-reactive chiral compound to form a mixture; and irradiating the mixture for a period of time. | 04-09-2009 |
| 20090316417 | Light-redirecting article - A method for forming a light-redirecting article is provided wherein a surface of a substrate is conditioned by applying a layer of an embedment material. A close-packed layer of microspheres is assembled using drying-assisted self-assembly and applied to the conditioned surface. Microspheres are then embedded halfway into the surface of the layer of the embedment material. | 12-24-2009 |
| 20100068418 | Sensitized Photochemical Switching for Cholesteric Liquid Crystal Displays - The present invention relates to photo-tunable dopant compositions comprising a photo-reactive chiral compound capable of undergoing a photochemical reaction resulting in the loss of chirality, and a triplet sensitizer. The present invention also relates to a display comprising a substrate, a liquid crystalline layer thereon, wherein the liquid crystalline layer comprises a nematic host, at least one chiral dopant, a photo-reacted compound, and a triplet sensitizer, and at least one transparent conductive layer. The present invention also relates to a method of tuning a cholesteric liquid crystal material comprising providing at least one mesogenic compound, at least one triplet sensitizer, and at least one photo-reactive chiral compound; combining the at least one mesogenic compound, at least one triplet sensitizer, and at least one photo-reactive chiral compound to form a mixture; and irradiating the mixture for a period of time. | 03-18-2010 |
| 20100224313 | LIGHT EMITTING DEVICE WITH MICROLENS ARRAY - A method of manufacturing a micro-lens array and light-emitting device, comprising forming a first structured polymer film with close packed surface cavities having a mean diameter of less than 20 micrometers and a relatively lower surface energy surface, forming a transparent second structured film with an array of microlenses formed thereon corresponding to the cavities of the first structured film, wherein the second structured film comprises a relatively high surface energy material and has a refractive index greater than 1.45, and wherein the microlenses are randomly distributed, separating the second structured film with the micro-lens array from the first structured polymer film, and attaching the second structured film to a transparent substrate or cover of a light-emitting device through which light is emitted. Use of microlens arrays formed from relatively high surface energy materials enables matching refractive index of microlens array to that of light-emitting devices substrate or cover through which light is emitted and relatively high elastic modulus providing good scratch resistance. | 09-09-2010 |
Madabushi Venkatakrishnama Chari, Burt Hills, NY US
| Patent application number | Description | Published |
|---|---|---|
| 20090243647 | Non-Invasive monitoring and diagnosis of electric machines by measuring external flux density - System and methods for monitoring electric machines are provided. A magnetic field associated with the electric machine is measured at one or more points external to the electric machine, wherein a respective magnetic field value is associated with each of the one or more points. The one or more measured magnetic field values are compared to one or more corresponding expected values, and a determination of whether a fault is present in the electric machine is made based at least in part on the comparison. | 10-01-2009 |
Madabushi Venkatakrishnama Chari, Burnt Hills, NY US
| Patent application number | Description | Published |
|---|---|---|
| 20090219030 | Methods and Systems for Detecting Rotor Field Ground Faults In Rotating Machinery - Embodiments of the invention can include methods and systems for detecting rotor field ground faults in rotating machinery. In one embodiment, a system can include a rotor of the rotating machine comprising a plurality of field windings substantially disposed therein and a stator of the rotating machine comprising a plurality of stator windings substantially disposed therein, with an air gap existing between the rotor and the stator. The system can include a high-impedance grounding circuit at least temporarily connected between the rotor and a ground. Additionally, the system can include an air gap flux probe positioned at least temporarily between the rotor and the stator for measuring a magnetic flux density generated in the air gap during operation of the rotating machine. Finally, the system can further include an analyzer in electrical communication with the air gap flux probe for receiving an output of the air gap flux probe. | 09-03-2009 |
Suresh Chari, Scarsdale, NY US
| Patent application number | Description | Published |
|---|---|---|
| 20110321131 | SECURITY MODEL FOR WORKFLOWS AGGREGATING THIRD PARTY SECURE SERVICES - A method, system and computer program product for security model for workflows aggregating third party secure services. In one embodiment, a workflow model described in a workflow language is provided and configured to declare security requirements of a composite application integrating protected data from two or more external network resources. The method also incorporates providing an authentication service executing on at least one secure server computer. The authentication service is configured to conduct user authentication and authorization to access the protected data at the external network resources on behalf of the composite application executing on at least one host server computer according to the workflow language. | 12-29-2011 |
Suresh N. Chari, Scarsdale, NY US
| Patent application number | Description | Published |
|---|---|---|
| 20090222561 | Method, Apparatus and Computer Program Product Implementing Session-Specific URLs and Resources - Methods, apparatus and computer program products implement session-specific URIs for allocating network resources by receiving a request from a user for at least one network resource; assigning a session-specific URI to the at least one network resource for use in identifying the at least one network resource and controlling access to the at least one network resource; updating a network directory service with the session-specific URI; and communicating the session-specific URI to the user. The user communicates the session-specific URI to other participants in the session during which the at least one network resource will be used. After a pre-determined time, the session ends and the at least one network resource is de-allocated by, for example, changing the URI of the at least one network resource. Frequent changes of URIs hinder efforts by unauthorized individuals to gain access to network resources. | 09-03-2009 |
| 20100011421 | ENABLING AUTHENTICATION OF OPENID USER WHEN REQUESTED IDENTITY PROVIDER IS UNAVAILABLE - A method, system and computer program product for enabling authentication of an OpenID user when a requested identity provider is unavailable. A relying party receives a login request from the OpenID user, where the login request includes a username. The relying party reads a list of trusted identity providers that are associated with the received username and selects one of those identity providers. The relying party generating an OpenID identifier using an identification (e.g., Uniform Resource Locator) of the selected identity provider and the username. The relying party transmits an authentication request (request to authenticate the OpenID user) to the selected identity provider using the formed OpenID identifier. If the selected identity provider is unavailable, then the relying party selects another identity provider from the list of identity providers that are associated with the received username and repeats the above process. | 01-14-2010 |
Suresh Narayana Chari, Scarsdale, NY US
| Patent application number | Description | Published |
|---|---|---|
| 20090049111 | METHOD, APPARATUS AND SYSTEM FOR RESISTANCE TO SIDE CHANNEL ATTACKS ON RANDOM NUMBER GENERATORS - A random number generator (RNG) resistant to side channel attacks includes an activation pseudo random number generator (APRNG) having an activation output connected to an activation seed input to provide a next seed to the activation seed input. A second random number generator includes a second seed input, which receives the next seed and a random data output, which outputs random data in accordance with the next seed. An input seed memory is connected to the activation seed input and a feedback connection from the activation output so that the next seed is stored in the input seed memory to be used by the APRNG as the activation seed input at a next startup cycle. | 02-19-2009 |