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Muthukrishnan
Sankaran Muthukrishnan, Chennai IN
| Patent application number | Description | Published |
|---|---|---|
| 20100080902 | METHOD AND APPARATUS FOR LOW COST PRODUCTION OF POLYSILICON USING SIEMEN'S REACTORS - A novel low cost polysilicon production technique for Siemens type reactors is disclosed. In one embodiment, a CVD reactor assembly includes a reactor forming a stainless steel envelope attached to a base plate. The stainless steel envelope is designed to receive a thermal fluid at room temperature and maintain a reactor wall temperature up to 450° C. A steam generator is configured to receive the thermal fluid having a temperature up to 450° C. from the reactor and generate a low pressure steam around 350° C. to 450° C. A low pressure steam turbine/generator is configured to receive the low pressure steam and generate electricity. In another embodiment, the steam generator is configured to receive heat from an external source in addition to the thermal fluid to generate super heated steam. A conventional steam turbine/generator receives the super heated steam and generates electricity. | 04-01-2010 |
Sankaran Muthukrishnan, Bangalore IN
| Patent application number | Description | Published |
|---|---|---|
| 20090191336 | METHOD AND APPARATUS FOR SIMPIFIED STARTUP OF CHEMICAL VAPOR DEPOSITION OF POLYSILICON - A simplified startup CVD technique for Siemens type of reactors is disclosed. In one embodiment, a method for production of bulk polysilicon in a CVD reactor assembly includes evacuating stainless steel envelope to have substantially low oxygen content, applying radiant heat (e.g., using a heating element coated with silicon) to the stainless steel enclosure sufficient for raising silicon rods to a firing temperature, flowing process gas (H | 07-30-2009 |
Sathya Narayanan Muthukrishnan, Bangalore IN
| Patent application number | Description | Published |
|---|---|---|
| 20090215927 | CORE-SHELL PARTICLE, METHOD, AND COMPOSITION - A core-shell particle is formed by a method that includes forming a crosslinked polyorganosiloxane core, reacting a graftlinking agent with the crosslinked polyorganosiloxane core, and polymerizing a poly(alkenyl aromatic) shell around the graftlinking agent-functionalized polyorganosiloxane core. The method produces a core-shell particle with improved adhesion between shell and core. The core-shell particle is useful as an impact modifier in thermoplastic compositions. | 08-27-2009 |