Patents by Inventor Sisitha Sudarshana

Sisitha Sudarshana 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: 20240166838
    Abstract: A composition for accelerating aerobic biodegradation of an elastomer, such as NBR latex, comprises an additive that includes a monomer with a plurality of polyhydroxy groups, and a growth enhancer for aerobic bacteria. When combining the monomer and the growth enhancer in a weight ratio of between 12:1 and 6:1, the result is an assimilative carbon to nitrogen ratio in the elastomer of between 10:1 and 30:1. Preferably the monomer with the plurality of polyhydroxy groups has a molecular weight of between 140-180 g/mol, and the growth enhancer of aerobic bacteria has a molecular weight of between 130-140 g/mol. In some embodiments the composition is added to a base that results in an alkaline mixture, and a dehydrating agent to inhibit agglomeration and decomposition.
    Type: Application
    Filed: November 23, 2022
    Publication date: May 23, 2024
    Inventors: Belle L. Chou, Samantha Shun-Han Chang, Ranthi Manahari Dias, Sisitha Sudarshana
  • Publication number: 20230060831
    Abstract: The present invention generally relates to an incineration-friendly wearable article comprising an elastomeric polymer matrix composed of an inorganic material capable of efficiently able to reduce or eliminate flue gas emissions during incineration of the article, and a method of making the incineration-friendly wearable article containing the elastomeric polymer matrix containing the inorganic material. The inorganic material acts as a catalytic thermal oxidative material.
    Type: Application
    Filed: August 30, 2021
    Publication date: March 2, 2023
    Inventors: Belle L. Chou, Sisitha Sudarshana, Chanakee Lakshika Chathushani, Samantha S. Chang
  • Publication number: 20220386720
    Abstract: The present invention generally relates to an eco-friendly wearable article comprising a nutrient complex capable of efficiently able to reduce or eliminate methane gas emission during biodegradation of the article, and a method of making the eco-friendly wearable article containing the nutrient complex. Preferably, the nutrient complex typically comprises anionic sulphate ions and cationic salts of iron(II) and copper(II), thereby facilitating methane oxidation in an anaerobic environment such as a landfill.
    Type: Application
    Filed: June 3, 2021
    Publication date: December 8, 2022
    Inventors: Belle L. Chou, Sisitha Sudarshana, Ranthi Dias, Samantha S. Chang
  • Publication number: 20190239585
    Abstract: A single use invertible elastomeric article with at least two polymeric layers. Each polymer in the two polymeric layers is a single, pure polymer and are different from each other, such that the single polymer of the first layer is not the same as the single polymer of the second layer. The first layer can comprise acrylonitrile butadiene and the second layer can comprise polychloroprene in an embodiment. The first layer is directly bonded to the second layer with a primer coating between the layers comprising a cationic polymer. There is a method of manufacturing the invertible elastomeric article comprising the steps of coating a former with a coagulant; applying a first polymeric coating of a single polymer; coating the first polymeric coating with a primer; and applying a second polymeric coating; the second polymeric coating comprises a single polymer different from the single polymer of the first polymeric coating.
    Type: Application
    Filed: February 8, 2018
    Publication date: August 8, 2019
    Inventors: Belle L. Chou, Sisitha Sudarshana, Amila Suranga
  • Publication number: 20190191796
    Abstract: Disclosed are compositions and methods of enhancing the application of subsequent treatment on an elastomeric skin protection article and articles thereof. Embodiments disclose processes, including creating microscale voids and cracks, adding a surface activator, and rearranging or altering the inside surface of a glove. Subsequent treatment of a material, such as soothing agents, pH controlling substances, herbal oils and powders can coat the inside surface of a glove in a smaller quantity and last longer when added after the glove's inside surface has undergone the enhancing method.
    Type: Application
    Filed: December 27, 2017
    Publication date: June 27, 2019
    Inventors: Belle L. Chou, Sisitha Sudarshana, Amila Suranga
  • Publication number: 20180311162
    Abstract: The present invention relates to developing a skin pH balancing natural composition coating applied to the inside surface of an elastomeric flexible article, such as single use disposable glove. The skin pH balancing natural composition coating comprises a mixture of amino acids encapsulated in liposomes and monovalent cations encapsulated in liposomes and free fatty acids which enhance the skin barrier function through skin pH balancing. The present invention also relates to the method of making the skin pH balancing natural composition coating and the method of applying the coating to the inside surface of an elastomeric flexible article, such as a single use disposable glove.
    Type: Application
    Filed: May 1, 2017
    Publication date: November 1, 2018
    Inventors: Belle L. Chou, Sisitha Sudarshana, Athawuda Arachchige Ranthi Manahari Dias
  • Patent number: 9993416
    Abstract: Disclosed are a mixture of modified polysaccharides and the process of making the modified polysaccharides. Embodiments disclose processing and applying a preparation of the mixture of modified polysaccharides in combination with other bioactive ingredients in aloe, such as amino acids onto the inside surface of a polymer elastomeric flexible article, for example a glove, to enhance the water holding capacity and to regulate pH of the user's skin through effective epidermal penetration.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: June 12, 2018
    Assignee: SHEN WEI (USA) INC.
    Inventors: Belle L. Chou, Sisitha Sudarshana, Athawuda Arachchige Ranthi Manahari Dias