Patents by Inventor Rajappa Tadepalli

Rajappa Tadepalli 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).

  • Publication number: 20240134341
    Abstract: The present application relates to systems and methods for obtaining real-time abrasion data. An example computer-implemented method could include receiving, at a computing device, sensor data from one or more sensors. The one or more sensors are disposed in proximity to an abrasive product or a workpiece associated with the abrasive product. The one or more sensors are configured to collect abrasion operational data associated with an abrasive operation involving the abrasive product or the workpiece. The computer-implemented method could further include training, based on the sensor data, a machine learning system to determine product specific information of the abrasive product and/or workpiece specific information. The computer-implemented method could also include providing the trained machine learning system using the computing device.
    Type: Application
    Filed: May 31, 2022
    Publication date: April 25, 2024
    Inventors: Sujatha K. IYENGAR, Rajappa TADEPALLI, Atin ANGRISH, Grace O. OLATILU, Siddarth SRINIVASAN, Kenneth A. SAUCIER, Christopher M. FITZGERALD, Brian P. RUTKIEWICZ, Alfredo Omar BARRAGAN, Robin M. BRIGHT
  • Patent number: 11739196
    Abstract: Methods of making fiber reinforced composite articles are described. The methods may include treating fibers with a sizing composition that includes a polymerization compound, and introducing the treated fibers to a pre-polymerized composition. The combination of the treated fibers and pre-polymerized composition may then undergo a temperature adjustment to a polymerization temperature at which the pre-polymerized composition polymerizes into a plastic around the fibers to form the fiber-reinforced composite article. Techniques for introducing the treated fibers to the pre-polymerized composition may include pultrusion, filament winding, reactive injection molding (RIM), structural reactive injection molding (SRIM), resin transfer molding (RTM), vacuum-assisted resin transfer molding (VARTM), long fiber injection (LFI), sheet molding compound (SMC) molding, bulk molding compound (BMC) molding, a spray-up application, and/or a hand lay-up application, among other techniques.
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: August 29, 2023
    Assignee: Johns Manville
    Inventors: Rajappa Tadepalli, Jawed Asrar, Klaus Friedrich Gleich, Kiarash Alavi
  • Patent number: 11685818
    Abstract: Methods of making fiber reinforced composite articles are described. The methods may include treating fibers with a sizing composition that includes a polymerization compound, and introducing the treated fibers to a pre-polymerized composition. The combination of the treated fibers and pre-polymerized composition may then undergo a temperature adjustment to a polymerization temperature at which the pre-polymerized composition polymerizes into a plastic around the fibers to form the fiber-reinforced composite article. Techniques for introducing the treated fibers to the pre-polymerized composition may include pultrusion, filament winding, reactive injection molding (RIM), structural reactive injection molding (SRIM), resin transfer molding (RTM), vacuum-assisted resin transfer molding (VARTM), long fiber injection (LFI), sheet molding compound (SMC) molding, bulk molding compound (BMC) molding, a spray-up application, and/or a hand lay-up application, among other techniques.
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: June 27, 2023
    Assignee: Johns Manville
    Inventors: Rajappa Tadepalli, Jawed Asrar, Klaus Friedrich Gleich, Kiarash Alavi
  • Publication number: 20230182263
    Abstract: The present application relates to systems and methods for obtaining real-time abrasion data. An example computer-implemented method could include receiving, at a computing device, sensor data from one or more sensors. The one or more sensors are disposed in proximity to an abrasive product or a workpiece associated with the abrasive product. The one or more sensors are configured to collect abrasion operational data associated with an abrasive operation involving the abrasive product or the workpiece. The computer-implemented method could further include training, based on the sensor data, a machine learning system to determine product specific information of the abrasive product and/or workpiece specific information. The computer-implemented method could also include providing the trained machine learning system using the computing device.
    Type: Application
    Filed: February 10, 2023
    Publication date: June 15, 2023
    Inventors: Brahmanandam V. TANIKELLA, Christopher ARCONA, Thomas H. OSBORN, Joseph P. SULLIVAN, Anna MAASSEL, Arunvel THANGAMANI, Robin Chandras JAYARAM, Rajappa TADEPALLI
  • Publication number: 20200306927
    Abstract: The present application relates to systems and methods for obtaining real-time abrasion data. An example computer-implemented method could include receiving, at a computing device, sensor data from one or more sensors. The one or more sensors are disposed in proximity to an abrasive product or a workpiece associated with the abrasive product. The one or more sensors are configured to collect abrasion operational data associated with an abrasive operation involving the abrasive product or the workpiece. The computer-implemented method could further include training, based on the sensor data, a machine learning system to determine product specific information of the abrasive product and/or workpiece specific information. The computer-implemented method could also include providing the trained machine learning system using the computing device.
    Type: Application
    Filed: March 28, 2020
    Publication date: October 1, 2020
    Inventors: Brahmanandam V. Tanikella, Christopher Arcona, Thomas H. Osborn, Joseph P. Sullivan, Anna Maassel, Arunvel Thangamani, Robin Chandras Jayaram, Rajappa Tadepalli
  • Publication number: 20200299487
    Abstract: Methods of making fiber reinforced composite articles are described. The methods may include treating fibers with a sizing composition that includes a polymerization compound, and introducing the treated fibers to a pre-polymerized composition. The combination of the treated fibers and pre-polymerized composition may then undergo a temperature adjustment to a polymerization temperature at which the pre-polymerized composition polymerizes into a plastic around the fibers to form the fiber-reinforced composite article. Techniques for introducing the treated fibers to the pre-polymerized composition may include pultrusion, filament winding, reactive injection molding (RIM), structural reactive injection molding (SRIM), resin transfer molding (RTM), vacuum-assisted resin transfer molding (VARTM), long fiber injection (LFI), sheet molding compound (SMC) molding, bulk molding compound (BMC) molding, a spray-up application, and/or a hand lay-up application, among other techniques.
    Type: Application
    Filed: May 5, 2020
    Publication date: September 24, 2020
    Inventors: Rajappa Tadepalli, Jawed Asrar, Klaus Friedrich Gleich, Kiarash Alavi
  • Publication number: 20200239667
    Abstract: Methods of making fiber reinforced composite articles are described. The methods may include treating fibers with a sizing composition that includes a polymerization compound, and introducing the treated fibers to a pre-polymerized composition. The combination of the treated fibers and pre-polymerized composition may then undergo a temperature adjustment to a polymerization temperature at which the pre-polymerized composition polymerizes into a plastic around the fibers to form the fiber-reinforced composite article. Techniques for introducing the treated fibers to the pre-polymerized composition may include pultrusion, filament winding, reactive injection molding (RIM), structural reactive injection molding (SRIM), resin transfer molding (RTM), vacuum-assisted resin transfer molding (VARTM), long fiber injection (LFI), sheet molding compound (SMC) molding, bulk molding compound (BMC) molding, a spray-up application, and/or a hand lay-up application, among other techniques.
    Type: Application
    Filed: April 1, 2020
    Publication date: July 30, 2020
    Inventors: Rajappa Tadepalli, Jawed Asrar, Klaus Friedrich Gleich, Kiarash Alavi
  • Patent number: 10669402
    Abstract: Methods of making fiber reinforced composite articles are described. The methods may include treating fibers with a sizing composition that includes a polymerization compound, and introducing the treated fibers to a pre-polymerized composition. The combination of the treated fibers and pre-polymerized composition may then undergo a temperature adjustment to a polymerization temperature at which the pre-polymerized composition polymerizes into a plastic around the fibers to form the fiber-reinforced composite article. Techniques for introducing the treated fibers to the pre-polymerized composition may include pultrusion, filament winding, reactive injection molding (RIM), structural reactive injection molding (SRIM), resin transfer molding (RTM), vacuum-assisted resin transfer molding (VARTM), long fiber injection (LFI), sheet molding compound (SMC) molding, bulk molding compound (BMC) molding, a spray-up application, and/or a hand lay-up application, among other techniques.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: June 2, 2020
    Assignee: Johns Manville
    Inventors: Rajappa Tadepalli, Jawed Asrar, Klaus Friedrich Gleich, Kiarash Alavi
  • Publication number: 20200156210
    Abstract: The present application relates to systems and methods for obtaining real-time abrasion data. An example system includes a remote sensor that is located remotely from a grinding tool and a workpiece. The remote sensor is configured to detect vibration and/or noise associated with a grinding operation involving the grinding tool and the workpiece. The system includes communication interface and a controller configured to carry out operations. The operations include receiving, from the remote sensor, at least one of vibration or noise information associated with the grinding tool and the workpiece. The operations also include determining tool-specific information or workpiece-specific information based on the at least one of the vibration or noise information. The operations yet further include transmitting, via the communication interface, the tool-specific information or workpiece-specific information.
    Type: Application
    Filed: November 21, 2019
    Publication date: May 21, 2020
    Inventors: Joseph P. Sullivan, Brahmanandam V. Tanikella, Christopher Arcona, Patrick Millot, Joao Fernando G. Oliveira, Rajappa Tadepalli
  • Publication number: 20200039027
    Abstract: An abrasive article can include a wear detection sensor embedded within the abrasive body or extending along an exterior surface of the abrasive body. The wear detection sensor can include at least one conductive lead and be designed to create one or more wear signals corresponding to the wear stage of the abrasive body. The at least one conductive lead can be coupled to a logic device, which may control the wear detection sensor and register the wear signal(s).
    Type: Application
    Filed: August 2, 2019
    Publication date: February 6, 2020
    Inventors: Remi J. GOULET, Vivek SINGH, Sethumadhavan RAVICHANDRAN, Thierry DESIRE, Karen CONLEY, Robin Chandras JAYARAM, Arunvel THANGAMANI, Yeshwanth NARENDAR, Brian RUTKIEWICZ, Rajappa TADEPALLI
  • Patent number: 10351695
    Abstract: Methods are described for activating a glass fiber or flake to participate in polymerizing a resin. The methods may include sizing the glass fiber or flake with a sizing composition that includes a solution containing a polymerization initiator, and activating the polymerization initiator by forming a free radical moiety on the polymerization initiator that can initiate the polymerization of the resin. Additional methods of making a glass reinforced composite are described. The methods may include sizing glass fibers or flakes with a sizing composition that includes a solution containing a polymerization initiator, forming a free radical moiety on the polymerization initiator to make activated glass fibers or flakes, and contacting the activated glass fibers or flakes with a polymer resin. The activated glass fibers or flakes initiate the polymerization of the resin around the glass fibers or flakes to form the glass reinforced composite.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: July 16, 2019
    Assignee: Johns Manville
    Inventors: Kiarash Alavi, Jawed Asrar, Rajappa Tadepalli, Klaus Friedrich Gleich
  • Patent number: 10202501
    Abstract: Methods of making fiber reinforced composite articles are described. The methods may include treating fibers with a sizing composition that includes a polymerization compound, and introducing the treated fibers to a pre-polymerized composition. The combination of the treated fibers and pre-polymerized composition may then undergo a temperature adjustment to a polymerization temperature at which the pre-polymerized composition polymerizes into a plastic around the fibers to form the fiber-reinforced composite article. Techniques for introducing the treated fibers to the pre-polymerized composition may include pultrusion, filament winding, reactive injection molding (RIM), structural reactive injection molding (SRIM), resin transfer molding (RTM), vacuum-assisted resin transfer molding (VARTM), long fiber injection (LFI), sheet molding compound (SMC) molding, bulk molding compound (BMC) molding, a spray-up application, and/or a hand lay-up application, among other techniques.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: February 12, 2019
    Assignee: Johns Manville
    Inventors: Rajappa Tadepalli, Jawed Asrar, Klaus Friedrich Gleich, Kiarash Alavi
  • Publication number: 20190010310
    Abstract: Methods of making fiber reinforced composite articles are described. The methods may include treating fibers with a sizing composition that includes a polymerization compound, and introducing the treated fibers to a pre-polymerized composition. The combination of the treated fibers and pre-polymerized composition may then undergo a temperature adjustment to a polymerization temperature at which the pre-polymerized composition polymerizes into a plastic around the fibers to form the fiber-reinforced composite article. Techniques for introducing the treated fibers to the pre-polymerized composition may include pultrusion, filament winding, reactive injection molding (RIM), structural reactive injection molding (SRIM), resin transfer molding (RTM), vacuum-assisted resin transfer molding (VARTM), long fiber injection (LFI), sheet molding compound (SMC) molding, bulk molding compound (BMC) molding, a spray-up application, and/or a hand lay-up application, among other techniques.
    Type: Application
    Filed: September 17, 2018
    Publication date: January 10, 2019
    Inventors: Rajappa Tadepalli, Jawed Asrar, Klaus Friedrich Gleich, Kiarash Alavi
  • Patent number: 10065377
    Abstract: Methods of forming multi-component reinforced composites are described. The methods may include forming a particle-reinforced component and a polymer-containing component where the particle-reinforced component and the polymer-containing component are in contact with one another. The particle reinforced component may be formed by a process that includes providing reactive particles that have a reactive polymerization promoter chemically bonded or coated on the surface of the reactive particles and contacting the reactive particles with a resin solution that includes monomers of a polymer. The polymerization promoter chemically bonded or coated on the surface of the reactive particles may promote the polymerization of the monomers. The resin solution may subsequently be polymerized forming a polymer matrix around the reactive particles.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: September 4, 2018
    Assignee: Johns Manville
    Inventors: Rajappa Tadepalli, Klaus Friedrich Gleich, Jawed Asrar, Kiarash Alavi
  • Patent number: 9957378
    Abstract: Various methods and systems of making inorganic fiber/flake reinforced composites having a thermoplastic matrix are disclosed. The methods use systems similar to those used to make inorganic fiber/flake reinforced products having a thermoset matrix, but the systems and methods are modified to use thermoplastic precursor monomer(s) followed by in situ polymerization of the monomer(s) during and/or following forming of the desired shape of the products. These methods permit the manufacture of superior inorganic fiber reinforced thermoplastic matrix composites in large and very large shapes heretofore not possible, or practical.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: May 1, 2018
    Assignee: Johns Manville
    Inventors: Klaus Friedrich Gleich, Jawed Asrar, Thomas E Burghardt, Rajappa Tadepalli
  • Publication number: 20170267839
    Abstract: Various methods and systems of making inorganic fiber/flake reinforced composites having a thermoplastic matrix are disclosed. The methods use systems similar to those used to make inorganic fiber/flake reinforced products having a thermoset matrix, but the systems and methods are modified to use thermoplastic precursor monomer(s) followed by in situ polymerization of the monomer(s) during and/or following forming of the desired shape of the products. These methods permit the manufacture of superior inorganic fiber reinforced thermoplastic matrix composites in large and very large shapes heretofore not possible, or practical.
    Type: Application
    Filed: June 1, 2017
    Publication date: September 21, 2017
    Inventors: Klaus Friedrich Gleich, Jawed Asrar, Thomas E. Burghardt, Rajappa Tadepalli
  • Patent number: 9695300
    Abstract: Various methods and systems of making inorganic fiber/flake reinforced composites having a thermoplastic matrix are disclosed. The methods use systems similar to those used to make inorganic fiber/flake reinforced products having a thermoset matrix, but the systems and methods are modified to use thermoplastic precursor monomer(s) followed by in situ polymerization of the monomer(s) during and/or following forming of the desired shape of the products. These methods permit the manufacture of superior inorganic fiber reinforced thermoplastic matrix composites in large and very large shapes heretofore not possible, or practical.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: July 4, 2017
    Assignee: Johns Manville
    Inventors: Klaus Friedrich Gleich, Jawed Asrar, Thomas E Burghardt, Rajappa Tadepalli
  • Patent number: 9650498
    Abstract: Various methods and systems of making inorganic fiber/flake reinforced composites having a thermoplastic matrix are disclosed. The methods use systems similar to those used to make inorganic fiber/flake reinforced products having a thermoset matrix, but the systems and methods are modified to use thermoplastic precursor monomer(s) followed by in situ polymerization of the monomer(s) during and/or following forming of the desired shape of the products. These methods permit the manufacture of superior inorganic fiber reinforced thermoplastic matrix composites in large and very large shapes heretofore not possible, or practical.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: May 16, 2017
    Assignee: Johns Manville
    Inventors: Klaus Friedrich Gleich, Jawed Asrar, Thomas E Burghardt, Rajappa Tadepalli
  • Publication number: 20160340494
    Abstract: Methods of making fiber reinforced composite articles are described. The methods may include treating fibers with a sizing composition that includes a polymerization compound, and introducing the treated fibers to a pre-polymerized composition. The combination of the treated fibers and pre-polymerized composition may then undergo a temperature adjustment to a polymerization temperature at which the pre-polymerized composition polymerizes into a plastic around the fibers to form the fiber-reinforced composite article. Techniques for introducing the treated fibers to the pre-polymerized composition may include pultrusion, filament winding, reactive injection molding (RIM), structural reactive injection molding (SRIM), resin transfer molding (RTM), vacuum-assisted resin transfer molding (VARTM), long fiber injection (LFI), sheet molding compound (SMC) molding, bulk molding compound (BMC) molding, a spray-up application, and/or a hand lay-up application, among other techniques.
    Type: Application
    Filed: August 8, 2016
    Publication date: November 24, 2016
    Inventors: Rajappa Tadepalli, Jawed Asrar, Klaus Friedrich Gleich, Kiarash Alavi
  • Patent number: 9452569
    Abstract: Methods of making a fiber-reinforced composite article are described. The methods may include providing fibers to an article template, where the fibers have been treated with a coupling-initiator compound. They may further include providing a pre-polymerized mixture that includes a monomer and a catalyst to the article template. The combination of the fibers and the pre-polymerized mixture may be heated to a polymerization temperature where the monomers polymerize around the fibers and form at least a portion of the composite article. The article may then be removed from the article template. Examples of the fiber-reinforced composite articles may include wind turbine blades for electric power generation.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: September 27, 2016
    Assignee: Johns Manville
    Inventors: Rajappa Tadepalli, Jawed Asrar, Klaus Friedrich Gleich