Patents by Inventor April R. Rodriguez

April R. Rodriguez 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: 10968355
    Abstract: We have demonstrated reversibly reducing metal-ion crosslinkages in polymer systems, by harnessing light, creating a dynamic and reversible bond. The reduction induces chemical and physical changes in the polymer materials. Some variations provide a polymer composition comprising: a polymer matrix containing one or more ionic species; one or more photosensitizers; and one or more metal ions capable of reversibly changing from a first oxidation state to a second oxidation state when in the presence of the photosensitizers and light. Some embodiments employ urethane-based ionomers capable of changing their crosslinked state under the influence of a change in counterion valance, using light or chemical reducing agents. This invention provides films, coatings, or objects that are reversible, re-mendable, self-healing, mechanically adjustable, and/or thermoplastic/thermoset-switchable.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: April 6, 2021
    Assignee: HRL Laboratories, LLC
    Inventors: Andrew P. Nowak, Adam F. Gross, April R. Rodriguez, Shanying Cui
  • Patent number: 10961354
    Abstract: Some variations provide a preceramic resin precursor formulation comprising: first molecules comprising at least one Si—C bond and/or at least one Si—N bond, wherein the first molecules include at least one silyl hydride group (Si—H) available for hydrosilylation; and second molecules with at least one unsaturated carbon-carbon bond attached to a UV-active functional group. The first molecules and second molecules may be reacted, via hydrosilylation with a homogeneous or heterogeneous metal-containing catalyst, to produce third molecules comprising a hydrosilylation-modified polysilazane that contains the UV-active functional group. Many possible starting formulations are described, and methods are disclosed for carrying out the chemical reactions to generate the hydrosilylation-modified polysilazanes. The hydrosilylation-modified polysilazanes may then be 3D-printed and thermally treating to fabricate a ceramic material.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: March 30, 2021
    Assignee: HRL Laboratories, LLC
    Inventors: Zak C. Eckel, Ashley M. Dustin, April R. Rodriguez, Phuong Bui
  • Patent number: 10932399
    Abstract: Examples include a method of forming an electromagnetic shielding material, the method including: applying a magnetic field to a precursor material that includes first ferromagnetic particles embedded within a first portion of a matrix material and second ferromagnetic particles embedded within a second portion of the matrix material, thereby causing the first ferromagnetic particles and the second ferromagnetic particles to move such that longitudinal axes of the first ferromagnetic particles and the second ferromagnetic particles become more aligned with the magnetic field; thereafter forcing the first portion of the matrix material through a filter, thereby moving the first ferromagnetic particles from the first portion of the matrix material into the second portion of the matrix material; and curing the second portion of the matrix material to form the electromagnetic shielding material.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: February 23, 2021
    Assignee: THE BOEING COMPANY
    Inventors: Andrew P. Nowak, Adam F. Gross, April R. Rodriguez, Russell Mott, Richard E. Sharp, Ashley Dustin
  • Publication number: 20210008593
    Abstract: Methods for forming a fluoropolymer coated component, such as a metal component, comprise applying an adhesion promoter onto a surface of the component; applying an organic material onto the adhesion promoter; and applying a mixture comprising a fluoropolymer and a solvent selected from a furan or a fluorinated solvent onto the organic material. Fluoropolymer coatings have a thickness of from about 5 mil to about 80 mil on a component, an average porosity of from about 20% to about 70% based on the total volume of the layer, and a void density of from about 1011 to about 1013 voids per cm3.
    Type: Application
    Filed: September 18, 2020
    Publication date: January 14, 2021
    Inventors: Andrew P. NOWAK, April R. RODRIGUEZ, Elena M. SHERMAN
  • Patent number: 10876025
    Abstract: Some variations provide a composition comprising: a first solid material and a second solid material that are chemically distinct and microphase-separated; and at least one liquid selectively absorbed into either of the first solid material or the second solid material. The first and second solid materials are preferably present as phase-separated regions of a copolymer, such as in a segmented copolymer (e.g., a urethane-urea copolymer). The liquid may be a freezing-point depressant for water. For example, the liquid may be selected from methanol, ethanol, isopropanol, ethylene glycol, propylene glycol, or glycerol. The liquid may be a lubricant. For example, the liquid may be selected from fluorinated oils, siloxanes, petroleum-derived oils, mineral oil, or plant-derived oils. The liquid may consist of or include water. The liquid may be an electrolyte. For example, the liquid may be selected from poly(ethylene glycol), ionic liquids, dimethyl carbonate, diethyl carbonate, or methyl ethyl dicarbonate.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: December 29, 2020
    Assignee: HRL Laboratories, LLC
    Inventors: Andrew P. Nowak, April R. Rodriguez, Jason A. Graetz, Adam F. Gross
  • Patent number: 10865267
    Abstract: This invention provides durable, low-ice-adhesion coatings with excellent ice-adhesion reduction. Some variations provide a low-ice-adhesion composition comprising a composite material containing at least a first-material phase and a second-material phase that are nanophase-separated on a length scale from 10 nanometers to less than 100 nanometers, wherein the first-material phase and the second-material phase further are microphase-separated on a length scale from 0.1 microns to 100 microns. The larger length scale of separation is driven by an emulsion process, which provides microphase separation that is in addition to classic molecular-level phase separation. The composite material has a glass-transition temperature above ?80° C. The coatings may be characterized by an AMIL Centrifuge Ice Adhesion Reduction Factor up to 100 or more. These coatings are useful for aerospace surfaces and many other applications.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: December 15, 2020
    Assignee: HRL Laboratories, LLC
    Inventors: Andrew P. Nowak, April R. Rodriguez, Elena Sherman, Adam F. Gross
  • Patent number: 10851211
    Abstract: Some variations provide a preceramic resin precursor formulation comprising: first molecules comprising at least one Si—N bond and/or at least one Si—C bond; and second molecules of the formula R4—N?C?O or R4—N?C?S, wherein R4 is a UV-active functional group. In some embodiments, R4 is selected from acrylate, methacrylate, vinyl ether, epoxide, oxetane, thiol, or a combination thereof. The first and second molecules are reacted with an isocyanate or isothiocyanate to form third molecules, providing a preceramic radiation-curable resin composition. The resin composition contains at least one Si—N bond and/or at least one Si—C bond in the main chain of the third molecules. Side chains of the third molecules may be selected from hydrogen, unsubstituted or substituted hydrocarbon groups, halides, esters, amines, hydroxyl, or cyano. The resin composition may be 3D printed and thermally treated to generate a ceramic material.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: December 1, 2020
    Assignee: HRL Laboratories, LLC
    Inventors: Zak C. Eckel, Ashley M. Dustin, April R. Rodriguez, Phuong Bui
  • Patent number: 10822460
    Abstract: Some variations provide a preceramic resin precursor formulation comprising: first molecules containing at least one Si—N bond and/or at least one Si—C bond; and second molecules of the formula R4—N?C?S, wherein R4 may be a UV-active functional group. In some embodiments, R4 is selected from ethynyl, vinyl, allyl, acrylate, methacrylate, vinyl ether, epoxide, oxetane, thiol, thioketone, isothiocyanate, or combinations thereof. The first and second molecules are reacted with an isothiocyanate to form third molecules, providing a preceramic radiation-curable resin composition. The resin composition contains at least one Si—N bond and/or at least one Si—C bond in the main chain of the third molecules. Side chains of the third molecules may be selected from hydrogen, unsubstituted or substituted hydrocarbon groups, halides, esters, amines, hydroxyl, or cyano. The resin composition may be 3D printed and thermally treated to generate a ceramic material.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: November 3, 2020
    Assignee: HRL Laboratories, LLC
    Inventors: Phuong Bui, Zak C. Eckel, April R. Rodriguez
  • Patent number: 10822515
    Abstract: A composition comprising a cyclic olefin copolymer; a particulate filler dispersed in the cyclic olefin copolymer; and a solvent is disclosed. The composition can be used to make a transmissive composite. The transmissive composite and a method of making a transmissive composite panel are also disclosed.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: November 3, 2020
    Assignee: THE BOEING COMPANY
    Inventors: Andrew P. Nowak, April R. Rodriguez, Erin E. Stache, Russell P. Mott, Adam F. Gross
  • Publication number: 20200290931
    Abstract: This disclosure provides resin formulations which may be used for 3D printing and thermally treating to produce a ceramic material. The disclosure provides direct, free-form 3D printing of a preceramic polymer, followed by converting the preceramic polymer to a 3D-printed ceramic composite with potentially complex 3D shapes. A wide variety of chemical compositions is disclosed, and several experimental examples are included to demonstrate reduction to practice. For example, preceramic resin formulations may contain a carbosilane in which there is at least one functional group selected from vinyl, allyl, ethynyl, unsubstituted or substituted alkyl, ester group, amine, hydroxyl, vinyl ether, vinyl ester, glycidyl, glycidyl ether, vinyl glycidyl ether, vinyl amide, vinyl triazine, vinyl isocyanurate, acrylate, methacrylate, alkacrylate, alkyl alkacrylate, phenyl, halide, thiol, cyano, cyanate, or thiocyanate.
    Type: Application
    Filed: May 30, 2020
    Publication date: September 17, 2020
    Inventors: Zak C. ECKEL, Andrew P. NOWAK, Ashley M. DUSTIN, April R. RODRIGUEZ, Phuong BUI, Tobias A. SCHAEDLER
  • Publication number: 20200291185
    Abstract: Some variations provide a polysulfide-based copolymer containing first repeat units comprising S8-derived sulfur atoms bonded via sulfur-sulfur bonds; and second repeat units comprising an organic, non-aromatic thiol molecule. Other variations provide a polysulfide-based copolymer containing first repeat units comprising S8-derived sulfur atoms bonded via sulfur-sulfur bonds; and second repeat units comprising an organic, non-aromatic unsaturated molecule, wherein the polysulfide-based copolymer has a total sulfur concentration of about 10 wt % or greater. Other variations provide a polysulfide-based copolymer containing first repeat units comprising S8-derived sulfur atoms bonded via sulfur-sulfur bonds; second repeat units comprising an organic, non-aromatic thiol molecule; and third repeat units comprising an organic, non-aromatic unsaturated molecule.
    Type: Application
    Filed: December 17, 2019
    Publication date: September 17, 2020
    Inventors: Andrew P. NOWAK, Ashley M. DUSTIN, April R. RODRIGUEZ, Kevin DRUMMEY
  • Publication number: 20200277510
    Abstract: Some variations provide a multiphase polymer composition comprising a first polymer material and a second polymer material that are chemically distinct, wherein the first polymer material and the second polymer material are microphase-separated on a microphase-separation length scale from about 0.1 microns to about 500 microns, wherein the multiphase polymer composition comprises first solid functional particles selectively dispersed within the first polymer material, and wherein the first solid functional particles are chemically distinct from the first polymer material and the second polymer material. Some embodiments provide an anti-corrosion composition comprising first corrosion-inhibitor particles or precursors selectively dispersed within the first polymer material, wherein the multiphase polymer composition optionally further comprises second corrosion-inhibitor particles or precursors selectively dispersed within the second polymer material.
    Type: Application
    Filed: May 17, 2020
    Publication date: September 3, 2020
    Inventors: Ashley M. DUSTIN, Andrew P. NOWAK, Jason A. GRAETZ, John J. VAJO, April R. RODRIGUEZ
  • Publication number: 20200239357
    Abstract: A composition comprising a Lewis base containing depolymerization liquid and methods of using the Lewis base depolymerization liquid to depolymerize the polymer component of fiber reinforced polymers to form free fibers.
    Type: Application
    Filed: April 10, 2020
    Publication date: July 30, 2020
    Inventors: Adam F. Gross, April R. Rodriguez, Ashley M. Nelson, John J. Vajo, Hardik Dalal, Panagiotis Emanuel George, Xin N. Guan, James Hillard Davis, JR.
  • Publication number: 20200207940
    Abstract: Methods and compositions for depolymerizing the polymer component of fiber reinforced polymers to facilitate the recovery of free fibers.
    Type: Application
    Filed: March 9, 2020
    Publication date: July 2, 2020
    Inventors: Adam F. Gross, John J. Vajo, Ashley M. Nelson, April R. Rodriguez, Hardik Dalal, Panagiotis E. George
  • Patent number: 10689542
    Abstract: Some variations provide a multiphase polymer composition comprising a first polymer material and a second polymer material that are chemically distinct, wherein the first polymer material and the second polymer material are microphase-separated on a microphase-separation length scale from about 0.1 microns to about 500 microns, wherein the multiphase polymer composition comprises first solid functional particles selectively dispersed within the first polymer material, and wherein the first solid functional particles are chemically distinct from the first polymer material and the second polymer material. Some embodiments provide an anti-corrosion composition comprising first corrosion-inhibitor particles or precursors selectively dispersed within the first polymer material, wherein the multiphase polymer composition optionally further comprises second corrosion-inhibitor particles or precursors selectively dispersed within the second polymer material.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: June 23, 2020
    Assignee: HRL Laboratories, LLC
    Inventors: Ashley M. Dustin, Andrew P. Nowak, Jason A. Graetz, John J. Vajo, April R. Rodriguez
  • Patent number: 10683400
    Abstract: This invention provides compositions and methods for reversible ionic crosslinking in polymers, providing tunability of polymer mechanical properties. Some variations provide a polymer composition comprising: a polymer containing a plurality of ionic species disposed along the chain backbone of the polymer, wherein the plurality of ionic species has an ionic charge polarity that is negative or positive; a redox reagent; and a reversible crosslinking agent capable of changing from a first oxidation state to a second oxidation state when in the presence of the redox reagent. The different oxidation states are associated with different coordination numbers between the reversible crosslinking agent and the ionic species contained in the polymer. This difference provides reversible ionic crosslinking. The polymer may be selected from polyurethanes (including segmented and non-segmented polyurethanes), polyacrylates, or polyamides, for example.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: June 16, 2020
    Assignee: HRL Laboratories, LLC
    Inventors: April R. Rodriguez, Ashley M. Nelson, Shanying Cui, Andrew P. Nowak, Adam F. Gross
  • Publication number: 20200181427
    Abstract: This invention provides durable, low-ice-adhesion coatings with excellent performance in terms of ice-adhesion reduction. Some variations provide a low-ice-adhesion coating comprising a microstructure with a first-material phase and a second-material phase that are microphase-separated on an average length scale of phase inhomogeneity from 1 micron to 100 microns. Some variations provide a low-ice-adhesion material comprising a continuous matrix containing a first component; and a plurality of discrete inclusions containing a second component, wherein the inclusions are dispersed within the matrix to form a phase-separated microstructure that is inhomogeneous on an average length scale from 1 micron to 100 microns, wherein one of the first component or the second component is a low-surface-energy polymer, and the other is a hygroscopic material. The coatings are characterized by an AMIL Centrifuge Ice Adhesion Reduction Factor up to 100 or more.
    Type: Application
    Filed: February 19, 2020
    Publication date: June 11, 2020
    Inventors: Andrew P. NOWAK, April R. RODRIGUEZ, Elena SHERMAN, Adam F. GROSS
  • Patent number: 10676572
    Abstract: Some variations provide a curable resin formulation for a water-decomposable thermoset material, comprising: first molecules containing a boron-oxygen-silicon group and a first functional group that is reactive for free-radical, cationic, and/or hydrosilylation polymerization; optionally second molecules containing at least one second functional group that is reactive with the first molecules; and a polymerization initiator. Other variations provide a curable resin formulation comprising: first molecules containing a polyester group and a first functional group that is reactive for free-radical, cationic, and/or hydrosilylation polymerization; optionally second molecules containing at least one second functional group that is reactive with the first molecules; and a polymerization initiator.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: June 9, 2020
    Assignee: HRL Laboratories, LLC
    Inventors: April R. Rodriguez, Zak C. Eckel, Phuong P. P. Bui, Ashley M. Dustin
  • Patent number: 10662108
    Abstract: A composition comprising a Lewis base containing depolymerization liquid and methods of using the Lewis base depolymerization liquid to depolymerize the polymer component of fiber reinforced polymers to form free fibers.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: May 26, 2020
    Assignee: The Boeing Company
    Inventors: Adam F. Gross, April R. Rodriguez, Ashley M. Nelson, John J. Vajo, Hardik Dalal, Panagiotis Emanuel George, Xin N. Guan, James Hillard Davis, Jr.
  • Publication number: 20200148896
    Abstract: An aqueous or water-borne precursor for forming an anti-fouling heterophasic thermoset polymeric coating is provided. The precursor includes a fluorine-containing polyol precursor having a functionality >about 2 that forms a branched fluorine-containing polymer component defining a continuous phase in the anti-fouling heterophasic thermoset polymeric coating. The precursor also includes a fluorine-free precursor that forms a fluorine-free component present as a plurality of domains each having an average size of ?about 100 nm to ?about 5,000 nm defining a discrete phase within the continuous phase in the anti-fouling heterophasic thermoset polymeric coating. A crosslinking agent and water are also present. An emulsifier may also be included. Methods of making anti-fouling heterophasic thermoset polymeric coatings with such precursors are also provided.
    Type: Application
    Filed: January 17, 2020
    Publication date: May 14, 2020
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: April R. RODRIGUEZ, Adam F. GROSS, Ashley M. DUSTIN, Anthony L. SMITH, Andrew P. NOWAK, Kevin J. DRUMMEY