Patents by Inventor Ramanathan S Lalgudi

Ramanathan S Lalgudi 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: 20210363406
    Abstract: Polymer matrix particles useful for inhibiting scale formation in oil and gas wells are described. The insoluble, porous, crosslinked polymer matrix includes a polymer backbone and ionic functional groups covalently bonded to the backbone, the ionic functional groups being capable of selectively attracting and binding salt scale-forming ions when in contact with a liquid containing such ions.
    Type: Application
    Filed: August 2, 2021
    Publication date: November 25, 2021
    Inventors: Anthony D. Duong, Ramanathan S. Lalgudi, Phillip N. Denen
  • Patent number: 11168284
    Abstract: Fatty acid based surfactants and methods for producing fatty acid based surfactants are described. The method includes reacting a fatty acid ester epoxide with a hydroxy acid, a hydroxy ester, a polyoxyalkyl diol, or a polyamine. Any remaining esters from the original fatty acid ester epoxide or hydroxy ester can optionally be hydrolyzed. Methods for making citric acid derived surfactants are also described.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: November 9, 2021
    Assignee: Battelle Memorial Institute
    Inventors: Daniel B. Garbark, Jeffrey T. Cafmeyer, Ramanathan S. Lalgudi
  • Publication number: 20210139409
    Abstract: A cationic surfactant and a method of making the cationic surfactant are described. The method comprises reacting a lipophilic bio-based material having at least one epoxy functional group and a hydrophilic organic compound having at least one cationic functional group and at least one hydroxyl functional group to form a reaction product containing a stable ether linkage connecting the lipophilic bio-based material to the organic compound. At least a portion of the cationic functional groups is neutralized or ion exchanged with an organic acid. Incorporation of the simple organic acid reduces the surfactant's aquatic toxicity and acts as a substrate to encourage co-digestion of the surfactant molecule, making the compound more biodegradable.
    Type: Application
    Filed: May 30, 2019
    Publication date: May 13, 2021
    Inventors: Ramanathan S. Lalgudi, Robert J. Cain, Manoj Kumar Valluri
  • Patent number: 10952431
    Abstract: A releasable encapsulation composition is described. The composition comprises a plurality of capsules, each capsule comprising an amphiphilic material encapsulating a substance, such as an active ingredient. The substance is releasable from encapsulation by a change in the amphiphilic material triggered by a change in the environment around the capsule.
    Type: Grant
    Filed: April 8, 2017
    Date of Patent: March 23, 2021
    Assignee: Battelle Memorial Institute
    Inventors: Ramanathan S. Lalgudi, Robert J. Cain
  • Patent number: 10945452
    Abstract: Improved meals, improved meal compositions, and improved aquaculture feed compositions are provided based on plant meal, wherein anti-nutritional effects of one or more anti-nutritional substances (ANS) are mitigated. Also provided are methods for making and using the improved meals, improved meal compositions, and improved aquaculture feed compositions. Also provided are kits using the improved meals, improved meal compositions, and improved aquaculture feed composition. The improved meals, improved meal compositions, and improved aquaculture feed compositions demonstrate that plant meal protein digestibility may be improved, for example, for replacing fish meal protein.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: March 16, 2021
    Assignee: Ohio Soybean Council
    Inventors: Ramanathan S. Lalgudi, Robert J. Cain, Barry L. McGraw
  • Patent number: 10907005
    Abstract: Aqueous prepolymer dispersions are provided, as are methods for making aqueous prepolymer dispersions. For example, an aqueous polyurethane prepolymer dispersion may be prepared by a process. The process may include contacting a soybean oil polyester polyol and an isocyanate reactive monomer together in a first mixture. The isocyanate reactive monomer may be functionalized with a tertiary amine salt of an isocyanate-unreactive organic acid. The process may include contacting the first mixture with a diisocyanate to form a neutralized polyurethane prepolymer. The process may include contacting the neutralized polyurethane prepolymer with water to form the aqueous polyurethane prepolymer dispersion.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: February 2, 2021
    Assignee: BATTELLE MEMORIAL INSTITUTE
    Inventors: Ramanathan S. Lalgudi, Phillip Denen, Richard P. Heggs
  • Patent number: 10889693
    Abstract: Emulsions for treating shingles, concrete, metallic substrates, mammalian skins, human hair or agricultural plants are described. The emulsions include soy alkyl and/or aryl ester; water; and a cationic surfactant to form the emulsion. Methods of using the emulsions are also described. Compositions including a modified oil alkyl and/or aryl ester comprising the transesterification reaction product of an oil and a surfactant having a hydroxyl group are described. Methods of using the compositions are also described. Methods of making a modified oil alkyl or aryl ester are described. The methods include transesterifying an oil with a surfactant having a hydroxyl group.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: January 12, 2021
    Assignee: Ohio Soybean Council
    Inventor: Ramanathan S. Lalgudi
  • Publication number: 20200376173
    Abstract: A chronically implanted medical device is disclosed that has an outermost layer formed from a conjugate of a polymer with lipoic acid, the conjugate having free 1,2-dithiolane groups. It is contemplated that this layer scavenges reactive oxygen species, i.e. acts as an antioxidant, and thus reduces inflammation and other adverse effects around the implant itself.
    Type: Application
    Filed: August 18, 2020
    Publication date: December 3, 2020
    Inventors: Gaurav Sharma, Ramanathan S. Lalgudi, Chad E. Bouton
  • Patent number: 10842917
    Abstract: A chronically implanted medical device is disclosed that has an outermost layer formed from a conjugate of a polymer with lipoic acid, the conjugate having free 1,2-dithiolane groups. It is contemplated that this layer scavenges reactive oxygen species, i.e. acts as an antioxidant, and thus reduces inflammation and other adverse effects around the implant itself.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: November 24, 2020
    Assignee: Battelle Memorial Institute
    Inventors: Gaurav Sharma, Ramanathan S. Lalgudi, Chad E. Bouton
  • Publication number: 20200332055
    Abstract: Provided are poly(AAG)-compositions, and corresponding coatings, foams, and coated articles. Also provided are methods for preparing the poly(AAG)-compositions and corresponding reagents including, e.g., polyol-AAG compositions. Coatings using the poly(AAG)-compositions may be useful for, e.g., replacing bisphenol-A cross-linked coatings used in food and beverage containers, coating metal articles, and the like.
    Type: Application
    Filed: May 6, 2020
    Publication date: October 22, 2020
    Inventors: Ramanathan S. LALGUDI, Robert J. CAIN
  • Patent number: 10767000
    Abstract: Provided are poly(AAG)-compositions, and corresponding coatings, foams, and coated articles. Also provided are methods for preparing the poly(AAG)-compositions and corresponding reagents including. e.g., polyol-AAG compositions. Coatings using the poly(AAG)-compositions may be useful for, e.g., replacing bisphenol-A cross-linked coatings used in food and beverage containers, coating metal articles, and the like.
    Type: Grant
    Filed: April 10, 2016
    Date of Patent: September 8, 2020
    Assignee: BATTELLE MEMORIAL INSTITUTE
    Inventors: Ramanathan S. Lalgudi, Robert J. Cain
  • Publication number: 20200255582
    Abstract: Processes for producing polymer microcapsules using vicinal functional oligomers are also described. The vicinal functional oligomers can be made by polymerizing an acrylate monomer, a styrene monomer, or both in the presence of a chain transfer agent. The vicinal functional oligomers can be reacted with epichlorohydrin to form vicinal epoxies. The vicinal epoxies can be reacted with polyamines to form epoxy polymer microspheres. The vicinal epoxies can be reacted with carbon dioxide in the presence of a catalyst to form vicinal cyclic carbonates. The vicinal cyclic carbonates can be reacted with polyamines to form isocyanate-free polymer microspheres. Polymer microspheres made by the processes are also described.
    Type: Application
    Filed: August 3, 2018
    Publication date: August 13, 2020
    Inventors: Ramanathan S. Lalgudi, Robert J. Cain
  • Patent number: 10669225
    Abstract: Linear ?, ?-nonadecanediester derivatives and methods of making the derivatives are described. The methods include reacting a linear ?, ?-nonadecanediester or a linear ?, ?-nonadecanedicarboxylic acid with a reactant optionally in the presence of at least one of a solvent and a catalyst to form the ?, ?-nonadecanediester derivative. Methods of making linear ?, ?-nonadecanediester or diester derivatives are also described.
    Type: Grant
    Filed: November 9, 2016
    Date of Patent: June 2, 2020
    Assignee: Battelle Memorial Institute
    Inventors: Ramanathan S. Lalgudi, Jeffrey Cafmeyer, Robert J. Cain, Daniel Garbark
  • Publication number: 20200078496
    Abstract: A chronically implanted medical device is disclosed that has an outermost layer formed from a conjugate of a polymer with lipoic acid, the conjugate having free 1,2-dithiolane groups. It is contemplated that this layer scavenges reactive oxygen species, i.e. acts as an antioxidant, and thus reduces inflammation and other adverse effects around the implant itself.
    Type: Application
    Filed: November 13, 2019
    Publication date: March 12, 2020
    Inventors: Gaurav Sharma, Ramanathan S. Lalgudi, Chad E. Bouton
  • Patent number: 10568771
    Abstract: A wound dressing system that includes a conformal cover and an infusion pump is provided. The cover includes a fluid port and an oxygen catalyst. The infusion pump is configured to deliver a bioactive liquid to the cover via the fluid port. The liquid includes an oxygen precursor. Upon combination, the oxygen catalyst and precursor react to form oxygen. A method of applying a wound dressing system including a bioactive powder, a bioactive liquid, and a conformal cover to a wound site is also provided. The method includes applying the powder to the wound site; securing the cover around the wound site, where the cover includes an oxygen catalyst and a fluid port; and delivering the bioactive liquid to at least an inner layer of the cover via the fluid port, where the bioactive liquid includes an oxygen precursor.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: February 25, 2020
    Assignee: Avent, Inc.
    Inventors: John Gavin MacDonald, Ramanathan S. Lalgudi, Karien J. Rodriguez, Reade Harpham, Stephanie Kute, Alison Salyer Bagwell, Brian Joseph Cuevas
  • Patent number: 10570307
    Abstract: A self-healing polymeric composition includes a polymer matrix and a plurality of functional microcapsules dispersed in the polymer matrix. The functional microcapsules include a core of a flowable material that can form film via coalescence, physical crosslinking and/or polymerization on contact with the substrate, and a polymer shell encapsulating the core. The functionality on the polymer shell is effective in complexing with the corrosion by-products, releasing the core material to repair the failure.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: February 25, 2020
    Assignee: Battelle Memorial Institute
    Inventors: Ramanathan S. Lalgudi, Beth Muszynski Britt
  • Patent number: 10485901
    Abstract: A chronically implanted medical device is disclosed that has an outermost layer formed from a conjugate of a polymer with lipoic acid, the conjugate having free 1,2-dithiolane groups. It is contemplated that this layer scavenges reactive oxygen species, i.e. acts as an antioxidant, and thus reduces inflammation and other adverse effects around the implant itself.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: November 26, 2019
    Assignee: BATTELLE MEMORIAL INSTITUTE
    Inventors: Gaurav Sharma, Ramanathan S. Lalgudi, Chad E. Bouton
  • Publication number: 20190271110
    Abstract: Coating materials and coated personal protective clothing items incorporating the coating material are described. The coating material includes a polymeric component; a metal oxide component; and a catalytic component. The catalytic component includes a metal oxide or a mixed metal oxide which is an effective catalyst for an oxidation reaction. The coated personal protective clothing item includes a personal protective clothing substrate with a coating including the coating material.
    Type: Application
    Filed: June 7, 2017
    Publication date: September 5, 2019
    Inventors: Ramanathan S. Lalgudi, Robert J. Cain, Krenar Shqau, Erik W. Edwards
  • Publication number: 20190256719
    Abstract: A corrosion inhibiting additive and methods of making the corrosion inhibiting additive are described. The corrosion inhibiting additive comprises a metal appended deactivated aromatic compound. The method includes reacting a metal salt with a deactivated aromatic compound to form a metal appended dichloro-diphenyl sulfone. Corrosion inhibiting coating compositions including the metal appended deactivated aromatic compound are also described.
    Type: Application
    Filed: November 4, 2017
    Publication date: August 22, 2019
    Inventors: Joshua P. James, Ramanathan S. Lalgudi
  • Patent number: 10327956
    Abstract: A wound dressing system comprising a wrap and a frangible ampoule is provided. The wrap is configured to contact/surround a wound site and includes an oxygen catalyst. The ampoule includes an oxygen precursor. The catalyst and precursor are configured to form oxygen when combined. A wound dressing system including a container is also provided that includes a powder, wrap, and frangible ampoule. The powder is disposed within the container, which is configured to allow the powder to be dispersed onto a wound site when activated. The wrap, which may include an oxygen catalyst, is also disposed in the container and is configured to contact/surround the wound site. The ampoule, also disposed in the container, includes a liquid containing an oxygen precursor. The liquid is configured to contact the wrap when the container is activated. Further, the catalyst and precursor are configured to form oxygen when combined.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: June 25, 2019
    Assignee: Avent, Inc.
    Inventors: John Gavin MacDonald, Kelly Dean Branham, David William Koenig, Andrew V. Sweeney, Stephanie Kute, Ramanathan S. Lalgudi, Phillip Andrew Schorr, Alison Salyer Bagwell, Brian Joseph Cuevas, David James McNamara