Patents by Inventor Sridhar Viamajala

Sridhar Viamajala 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).

  • Patent number: 11104920
    Abstract: Methods for the recovery of lipids, sugars, and proteins from microbial biomass by enzymatic digestion are disclosed. The methods involve treating microalgae with a fungal acid protease, or with a mixture of at least one protease and at least one amylase.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: August 31, 2021
    Assignee: The University of Toledo
    Inventors: Agasteswar Vadlamani, Patricia A. Relue, Sridhar Viamajala, Heng Shao, Sasidhar Varanasi
  • Patent number: 11015167
    Abstract: Methods and systems for efficient culturing of algae in open ponds are described.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: May 25, 2021
    Assignee: The University of Toledo
    Inventors: Brahmaiah Pendyala, Agasteswar Vadlamani, Sridhar Viamajala, Sasidhar Varanasi, Mohammadmatin Hanifzadeh
  • Patent number: 10894920
    Abstract: Systems, methods, and materials for pyrolyzing vegetable oil feedstocks to obtain high yields of various products are described.
    Type: Grant
    Filed: January 15, 2019
    Date of Patent: January 19, 2021
    Assignee: The University of Toledo
    Inventors: Yaser Shirazi, Sridhar Viamajala, Sasidhar Varanasi
  • Publication number: 20200347414
    Abstract: Methods for the recovery of lipids, sugars, and proteins from microbial biomass by enzymatic digestion are disclosed. The methods involve treating microalgae with a fungal acid protease, or with a mixture of at least one protease and at least one amylase.
    Type: Application
    Filed: July 20, 2020
    Publication date: November 5, 2020
    Applicant: The University of Toledo
    Inventors: Agasteswar Vadlamani, Patricia A. Relue, Sridhar Viamajala, Heng Shao, Sasidhar Varanasi
  • Patent number: 10752924
    Abstract: Methods for the recovery of lipids, sugars, and proteins from microbial biomass by enzymatic digestion are disclosed. The methods involve treating microalgae with a fungal acid protease, or with a mixture of at least one protease and at least one amylase.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: August 25, 2020
    Assignee: The University of Toledo
    Inventors: Agasteswar K. Vadlamani, Patricia Relue, Sridhar Viamajala, Heng Shao, Sasidhar Varanasi
  • Publication number: 20200017820
    Abstract: Methods and systems for efficient culturing of algae in open ponds are described.
    Type: Application
    Filed: September 24, 2019
    Publication date: January 16, 2020
    Applicant: The University of Toledo
    Inventors: Brahmaiah Pendyala, Agasteswar Vadlamani, Sridhar Viamajala, Sasidhar Varanasi, Mohammadmatin Hanifzadeh
  • Patent number: 10457909
    Abstract: Methods and systems for efficient culturing of algae in open ponds. Further, the methods include a method for culturing algae in an open pond medium that is free of any concentrated supply of CO2, and no concentrated source of CO2 is used to supply carbon for culturing the algae. Also, the algae are cultured in the open pond which has a pH above 9.5. In addition, the open pond medium has incorporated therein an inorganic carbon buffer at a specified concentration under conditions for obtaining an increased biomass. Also, the pH above 9.5 permits sufficient increased fixation of atmospheric CO2 into the open pond medium.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: October 29, 2019
    Assignee: The University of Toledo
    Inventors: Brahmaiah Pendyala, Agasteswar Vadlamani, Sridhar Viamajala, Sasidhar Varanasi, Mohammadmatin Hanifzadeh
  • Patent number: 10351886
    Abstract: Facile methods for high-yield furfural and HMF production from biomass sugars are described. The methods generally involve converting the biomass sugars in high yield to their ketose isomers, resulting in furan production under low temperature and pressure conditions with efficient recycling of the process streams.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: July 16, 2019
    Assignee: The University of Toledo
    Inventors: Siamak Alipour, Bin Li, Sasidhar Varanasi, Patricia Relue, Sridhar Viamajala
  • Publication number: 20190144758
    Abstract: Systems, methods, and materials for pyrolyzing vegetable oil feedstocks to obtain high yields of various products are described.
    Type: Application
    Filed: January 15, 2019
    Publication date: May 16, 2019
    Applicant: The University of Toledo
    Inventors: Yaser Shirazi, Sridhar Viamajala, Sasidhar Varanasi
  • Patent number: 10190058
    Abstract: Systems, methods, and materials for pyrolyzing vegetable oil feedstocks to obtain high yields of various products are described.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: January 29, 2019
    Assignee: The University of Toledo
    Inventors: Yaser Shirazi, Sridhar Viamajala, Sasidhar Varanasi
  • Patent number: 10087137
    Abstract: A concise method of producing nylon 11, 12, or 13 precursors from oleic acid or an ester of oleic acid is described. The method involves cross-metathesis reactions as the key C—C bond formation step. Subsequent steps are provided to convert the metathesis product to the corresponding nylon precursors. Also provided are the products of the method.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: October 2, 2018
    Assignee: The University of Toledo
    Inventors: Kana Yamamoto, Sridhar Viamajala, Sasidhar Varanasi, Kim Nguyen, Godwin Abel, Ajith Yapa Mudiyanselage
  • Patent number: 10077422
    Abstract: A harvesting device and methods of harvesting (i.e., dewatering) algae are described. The harvesting device and methods involve the use of stimuli-sensitive hydrogels.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: September 18, 2018
    Assignee: The University of Toledo
    Inventors: Agasteswar Vadlamani, Xiaofei Zhao, Sridhar Viamajala, Sasidhar Varanasi
  • Publication number: 20180127793
    Abstract: Facile methods for high-yield furfural and HMF production from biomass sugars are described. The methods generally involve converting the biomass sugars in high yield to their ketose isomers, resulting in furan production under low temperature and pressure conditions with efficient recycling of the process streams.
    Type: Application
    Filed: November 27, 2017
    Publication date: May 10, 2018
    Applicant: The University of Toledo
    Inventors: Siamak Alipour, Bin Li, Sasidhar Varanasi, Patricia Relue, Sridhar Viamajala
  • Publication number: 20180051214
    Abstract: Systems, methods, and materials for pyrolyzing vegetable oil feedstocks to obtain high yields of various products are described.
    Type: Application
    Filed: August 21, 2017
    Publication date: February 22, 2018
    Applicant: The University of Toledo
    Inventors: Yaser Shirazi, Sridhar Viamajala, Sasidhar Varanasi
  • Patent number: 9845294
    Abstract: Provided herein is a method of producing C11, C12, and C13 nylon precursors from oleic acid or esters of oleic acid, the method involving amide formation, ring-closing metathesis, and hydrogenation. Further provided are the products of the method described. Provided herein is a method for producing a lactam, the method comprising the steps of converting oleic acid or an ester of oleic acid into an amide having a general formula of H3C—(CH2)rCH?CH—(CH2)rCONR—(CH2)n-CH?CH2, wherein n is 1, 2, or 3, and R is either hydrogen or benzyl; subjecting the amide to a ring-closing metathesis reaction to produce an intermediate having a general formula of —(CH2)rCONR—(CH2) n-CH?CH2-, wherein n is 1, 2, or 3, R is either hydrogen or benzyl, and both ends are connected to each other; and hydrogenating the intermediate to produce a saturated lactam. In certain embodiments, the saturated lactam has a formula of —NH—(CH2) 10-CO—.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: December 19, 2017
    Assignee: The University of Toledo
    Inventors: Kana Yamamoto, Sridhar Viamajala, Sasidhar Varanasi, Ajith Yapa Mudiyanselage, Godwin Ameh Abel
  • Patent number: 9828615
    Abstract: Facile methods for high-yield furfural and HMF production from biomass sugars are described. The methods generally involve converting the biomass sugars in high yield to their ketose isomers, resulting in furan production under low temperature and pressure conditions with efficient recycling of the process streams.
    Type: Grant
    Filed: November 3, 2014
    Date of Patent: November 28, 2017
    Assignee: The University of Toledo
    Inventors: Siamak Alipour, Bin Li, Sasidhar Varanasi, Patricia Relue, Sridhar Viamajala
  • Patent number: 9809781
    Abstract: Methods for production of multiple biofuels through thermal fractionation of biomass feedstocks are described. The products of said methods are also described.
    Type: Grant
    Filed: January 5, 2015
    Date of Patent: November 7, 2017
    Assignee: The University of Toledo
    Inventors: Balakrishna Maddi, Sridhar Viamajala, Sasidhar Varanasi
  • Publication number: 20170313972
    Abstract: Methods and systems for efficient culturing of algae in open ponds are described.
    Type: Application
    Filed: April 27, 2017
    Publication date: November 2, 2017
    Applicant: The University of Toledo
    Inventors: Brahmaiah Pendyala, Agasteswar Vadlamani, Sridhar Viamajala, Sasidhar Varanasi, Mohammadmatin Hanifzadeh
  • Publication number: 20170204051
    Abstract: A concise method of producing nylon 11, 12, or 13 precursors from oleic acid or an ester of oleic acid is described. The method involves cross-metathesis reactions as the key C—C bond formation step. Subsequent steps are provided to convert the metathesis product to the corresponding nylon precursors. Also provided are the products of the method.
    Type: Application
    Filed: June 22, 2015
    Publication date: July 20, 2017
    Applicant: The University of Toledo
    Inventors: Kana Yamamoto, Sridhar Viamajala, Sasidhar Varanasi, Kim Nguyen, Godwin Abel, Ajith Yapa Mudiyanselage
  • Publication number: 20170158640
    Abstract: Provided herein is a method of producing C11, C12, and C13 nylon precursors from oleic acid or esters of oleic acid, the method involving amide formation, ring-closing metathesis, and hydrogenation. Further provided are the products of the method described. Provided herein is a method for producing a lactam, the method comprising the steps of converting oleic acid or an ester of oleic acid into an amide having a general formula of H3C—(CH2)rCH?CH—(CH2)rCONR—(CH2)n—CH?CH2, wherein n is 1, 2, or 3, and R is either hydrogen or benzyl; subjecting the amide to a ring-closing metathesis reaction to produce an intermediate having a general formula of —(CH2)rCONR—(CH2) n—CH?CH2—, wherein n is 1, 2, or 3, R is either hydrogen or benzyl, and both ends are connected to each other; and hydrogenating the intermediate to produce a saturated lactam. In certain embodiments, the saturated lactam has a formula of —NH—(CH2) 10—CO—.
    Type: Application
    Filed: July 2, 2015
    Publication date: June 8, 2017
    Applicant: The University of Toledo
    Inventors: Kana Yamamoto, Sridhar Viamajala, Sasidhar Varanasi, Ajith Yapa Mudiyanselage, Godwin Ameh Abel