Patents by Inventor Benjamin S. Hsiao

Benjamin S. Hsiao 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: 10894838
    Abstract: The present disclosure provides methods for producing carboxylated nanocelluloses. Compared with conventional methods, the methods of the present disclosure are simple and cost-effective in the production of carboxylated (or carboxy) nanocelluloses, in embodiments nanofibers and/or nanowhiskers, directly from raw biomass, including lignocellulose wood, non-wood sources, non-lignocellulose wood, lignocellulose or pure cellulose. The carboxy groups on the surface of nanocellulose thus produced can then be easily modified into functional derivatives such as amide, acetate, ether, ester, etc. The resulting nanocelluloses may be used to form purifying agents and/or filters to remove impurities from wastewater.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: January 19, 2021
    Assignee: The Research Foundation for the State University of New York
    Inventors: Benjamin S. Hsiao, Benjamin Chu, Priyanka R. Sharma
  • Publication number: 20200316504
    Abstract: Membranes suitable for use in membrane distillation are provided. Such membranes may include nano-fibrous layers with adjustable pore sizes. The membranes may include a hydrophobic nanofibrous scaffold and a thin hydrophilic protecting layer that can significantly reduce fouling and scaling problems.
    Type: Application
    Filed: June 18, 2020
    Publication date: October 8, 2020
    Inventors: Benjamin Chu, Benjamin S. Hsiao
  • Patent number: 10702815
    Abstract: Membranes suitable for use in membrane distillation are provided. Such membranes may include nano-fibrous layers with adjustable pore sizes. The membranes may include a hydrophobic nano fibrous scaffold and a thin hydrophilic protecting layer that can significantly reduce fouling and scaling problems.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: July 7, 2020
    Assignee: The Research Foundation for the State University of New York
    Inventors: Benjamin Chu, Benjamin S. Hsiao
  • Publication number: 20200047131
    Abstract: Membranes are provided for use in reverse osmosis applications. Such membranes include a nanofibrous scaffold in combination with a barrier layer. The barrier layer is formed of a polymeric matrix having functionalized cellulose nanofibers incorporated therein. The membranes may, in embodiments, also include a substrate.
    Type: Application
    Filed: February 14, 2018
    Publication date: February 13, 2020
    Inventors: Benjamin S. Hsiao, Hongyang Ma
  • Patent number: 10556222
    Abstract: Water filtration membranes are provided. Such membranes include polysaccharide fibers that have been modified to possess thiol groups thereon, resulting in materials that effectively bind heavy metal ions. The resulting fibers may be used by themselves or applied to a scaffold to form a membrane suitable for removing heavy metals from water, including groundwater.
    Type: Grant
    Filed: March 10, 2016
    Date of Patent: February 11, 2020
    Assignee: The Research Foundation for the State University of New York
    Inventors: Robert B. Grubbs, Benjamin S. Hsiao, Benjamin Chu, Rui Yang
  • Patent number: 10532322
    Abstract: Elastic microfiltration membranes are provided. These membranes may be used in a membrane bioreactor. Due to the elastic nature of the membranes, removal of fouling materials is improved, thereby increasing the efficiency and longevity of the membranes. Methods for forming such membranes and uses of the membranes are also provided, including their use in membrane bioreactors.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: January 14, 2020
    Assignee: The Research Foundation for the State University of New York
    Inventors: Benjamin Chu, Benjamin S. Hsiao, Ying Su
  • Patent number: 10315155
    Abstract: Membranes are provided for filtering a gas, in some cases air. Membranes using a highly porous cellulose nano fibrous barrier layer with a highly porous (surface-charged) substrate can exhibit high flux, high retention, and low pressure drop in air filtration of toxic aromatic gases, fumes, bacteria, viruses, dusts, and particulate matters.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: June 11, 2019
    Assignee: The Research Foundation for the State University of New York
    Inventors: Benjamin Chu, Benjamin S. Hsiao, Hongyang Ma
  • Patent number: 10272392
    Abstract: Membranes of the present disclosure possess very thin barrier layers, with high selectivity, high throughput, low fouling, and are long lasting. The membranes include graphene and/or graphene oxide barrier layers on a nanofibrous supporting scaffold. Methods for forming these membranes, as well as uses thereof, are also provided. In embodiments, an article of the present disclosure includes a nanofibrous scaffold; at least a first layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof on at least a portion of a surface of the nanofibrous scaffold; an additive such as crosslinking agents and/or particles on an outer surface of the at least first layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: April 30, 2019
    Inventors: Benjamin Chu, Benjamin S. Hsiao, Hongyang Ma, Zhe Wang
  • Publication number: 20190038190
    Abstract: Nanoparticle-fibrous membrane composites are provided as tunable interfacial scaffolds for flexible chemical sensors and biosensors by assembling gold nanoparticles (Au NPs) in a fibrous membrane. The gold nanoparticles are functionalized with organic, polymeric and/or biological molecules. The fibrous membranes may include different filter papers, with one example featuring a multilayered fibrous membrane consisting of a cellulose nanofiber (CN) top layer, an electrospun polyacrylonitrile (PAN) nanofibrous midlayer (or alternate material), and a nonwoven polyethylene terephthalate (PET) fibrous support layer, with the nanoparticles provided on the fibrous membranes through interparticle molecular/polymeric linkages and nanoparticle-nanofibrous interactions. Molecular linkers may be employed to tune hydrogen bonding and electrostatic and/or hydrophobic/hydrophilic interactions to provide sensor specificity to gases or liquids. The sensors act as chemiresistor-type sensors.
    Type: Application
    Filed: August 7, 2018
    Publication date: February 7, 2019
    Inventors: Chuan-Jian Zhong, Mark D. Poliks, Benjamin S. Hsiao, Ning Kang, Shan Yan, Jing Li, Shiyao Shan, Jin Luo
  • Publication number: 20190030492
    Abstract: Membranes of the present disclosure possess very thin barrier layers, with high selectivity, high throughput, low fouling, and are long lasting. The membranes include graphene and/or graphene oxide barrier layers on a nanofibrous supporting scaffold. Methods for forming these membranes, as well as uses thereof, are also provided. In embodiments, an article of the present disclosure includes a nanofibrous scaffold; at least a first layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof on at least a portion of a surface of the nanofibrous scaffold; an additive such as crosslinking agents and/or particles on an outer surface of the at least first layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof.
    Type: Application
    Filed: September 28, 2018
    Publication date: January 31, 2019
    Inventors: Benjamin Chu, Benjamin S. Hsiao, Hongyang Ma, Zhe Wang
  • Patent number: 10112150
    Abstract: Membranes of the present disclosure possess very thin barrier layers, with high selectivity, high throughput, low fouling, and are long lasting. The membranes include graphene and/or graphene oxide barrier layers on a nanofibrous supporting scaffold. Methods for forming these membranes, as well as uses thereof, are also provided. In embodiments, an article of the present disclosure includes a nanofibrous scaffold; at least a first layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof on at least a portion of a surface of the nanofibrous scaffold; an additive such as crosslinking agents and/or particles on an outer surface of the at least first layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof.
    Type: Grant
    Filed: July 15, 2015
    Date of Patent: October 30, 2018
    Assignee: The Research Foundation for the State University of New York
    Inventors: Benjamin Chu, Benjamin S. Hsiao, Hongyang Ma, Zhe Wang
  • Patent number: 9968892
    Abstract: A high flux and low pressure drop microfiltration (MF) membrane and a method for making the MF membrane. The microfiltration membranes are formed by a method that includes: preparing a nanofibrous structure; and modifying the surface of the nanofibrous structure with a surface modifier. The nanofibrous structure includes an electrospun nanofibrous scaffold or a polysaccharide nanofiber infused nanoscaffold or mixtures thereof. The electrospun nanofibrous scaffold can include polyacrylonitrile (PAN) or polyethersulfone (PES))/polyethylene terephthalate (PET) or mixtures thereof. The surface modifier includes polyethylenimine (PEI) and polyvinyl amine (Lupamin) cross-linked by ethylene glycol diglycidyl ether (EGdGE)/glycidyltrimethylammonium chloride (GTMACl) or poly(1-(1-vinylimidazolium)ethyl-3-vinylimdazolium dibromide (VEVIMIBr).
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: May 15, 2018
    Assignee: NATIONAL SCIENCE FOUNDATION
    Inventors: Benjamin Chu, Benjamin S. Hsiao, HongYang Ma
  • Publication number: 20180086851
    Abstract: The present disclosure provides methods for producing carboxylated nanocelluloses. Compared with conventional methods, the methods of the present disclosure are simple and cost-effective in the production of carboxylated (or carboxy) nanocelluloses, in embodiments nanofibers and/or nanowhiskers, directly from raw biomass, including lignocellulose wood, non-wood sources, non-lignocellulose wood, lignocellulose or pure cellulose. The carboxy groups on the surface of nanocellulose thus produced can then be easily modified into functional derivatives such as amide, acetate, ether, ester, etc. The resulting nanocelluloses may be used to form purifying agents and/or filters to remove impurities from wastewater.
    Type: Application
    Filed: November 30, 2017
    Publication date: March 29, 2018
    Inventors: Benjamin S. Hsiao, Benjamin Chu, Priyanka R. Sharma
  • Patent number: 9862665
    Abstract: Membranes are provided for energy efficient purification of alcohol by pervaporation. Such membranes include a nanofibrous scaffold in combination with a barrier layer. The membranes also include zeolites in the barrier layer. The membranes may, in embodiments, also include a substrate.
    Type: Grant
    Filed: December 1, 2014
    Date of Patent: January 9, 2018
    Assignee: The Research Foundation for the State University of New York
    Inventors: Benjamin Chu, Benjamin S. Hsiao, Devinder Mahajan, Tsung-Ming Yeh
  • Publication number: 20170326486
    Abstract: Membranes suitable for use in membrane distillation are provided. Such membranes may include nano-fibrous layers with adjustable pore sizes. The membranes may include a hydrophobic nano fibrous scaffold and a thin hydrophilic protecting layer that can significantly reduce fouling and scaling problems.
    Type: Application
    Filed: November 18, 2015
    Publication date: November 16, 2017
    Inventors: Benjamin Chu, Benjamin S. Hsiao
  • Patent number: 9724669
    Abstract: Articles are provided for absorbing fluids. In embodiments, the articles of the present disclosure are modified to make them hydrophobic, thereby decreasing their affinity for water and similar liquids, while increasing their affinity for other hydrophobic materials, including oil. After use, the articles, in embodiments sponges, may have their absorbed materials removed therefrom, and the articles may then be re-used to absorb additional materials.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: August 8, 2017
    Assignee: The Research Foundation for the State University of New York
    Inventors: Benjamin Chu, Benjamin S. Hsiao, Zhe Wang
  • Publication number: 20170157565
    Abstract: Elastic microfiltration membranes are provided. These membranes may be used in a membrane bioreactor. Due to the elastic nature of the membranes, removal of fouling materials is improved, thereby increasing the efficiency and longevity of the membranes. Methods for forming such membranes and uses of the membranes are also provided, including their use in membrane bioreactors.
    Type: Application
    Filed: July 15, 2015
    Publication date: June 8, 2017
    Inventors: Benjamin Chu, Benjamin S. Hsiao, Ying Su
  • Publication number: 20170157570
    Abstract: Membranes of the present disclosure possess very thin barrier layers, with high selectivity, high throughput, low fouling, and are long lasting. The membranes include graphene and/or graphene oxide barrier layers on a nanofibrous supporting scaffold. Methods for forming these membranes, as well as uses thereof, are also provided. In embodiments, an article of the present disclosure includes a nanofibrous scaffold; at least a first layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof on at least a portion of a surface of the nanofibrous scaffold; an additive such as crosslinking agents and/or particles on an outer surface of the at least first layer of nanoporous graphene, nanoporous graphene oxide, or combinations thereof.
    Type: Application
    Filed: July 15, 2015
    Publication date: June 8, 2017
    Inventors: Benjamin Chu, Benjamin S. Hsiao, Hongyang Ma, Zhe Wang
  • Publication number: 20170106334
    Abstract: Membranes are provided for filtering a gas, in some cases air. Membranes using a highly porous cellulose nano fibrous barrier layer with a highly porous (surface-charged) substrate can exhibit high flux, high retention, and low pressure drop in air filtration of toxic aromatic gases, fumes, bacteria, viruses, dusts, and particulate matters.
    Type: Application
    Filed: May 27, 2015
    Publication date: April 20, 2017
    Inventors: Benjamin Chu, Benjamin S. Hsiao, Hongyang Ma
  • Patent number: 9511329
    Abstract: A membrane is provided including a coating layer having cellulose nanofibers produced from oxidized cellulose microfibers and an electrospun substrate upon which the coating layer is applied. The nanofibers of the electrospun substrate have a diameter greater than that of the cellulose nanofibers. The membrane also has non-woven support upon which the electrospun substrate is disposed. Microfibers of the non-woven support have a diameter greater than that of the nanofibers of the electrospun substrate. Application of electrospun membrane is in microfiltration area, while the cellulose nanofiber membrane serves in ultrafiltration, nanofiltration, and reverse osmosis after chemical modification.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: December 6, 2016
    Assignee: The Research Foundation for The State University of New York
    Inventors: Benjamin Chu, Benjamin S. Hsiao, Hongyang Ma