Patents by Inventor Isabel Patrícia Martins Fernandes

Isabel Patrícia Martins Fernandes 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: 20200315168
    Abstract: Fragrant and antimicrobial properties were conferred to cotton fabrics following microencapsulation using green materials. Limonene and vanillin microcapsules were produced by complex coacervation using chitosan/gum Arabic as shell materials and tannic acid as hardening agent. The effect of two emulsifiers; Span 85 and polyglycerol polyricinoleate (PGPR), on the encapsulation efficiency (EE %), microcapsule's size and morphology, and cumulative release profiles was studied. The use of Span 85 resulted in mononuclear morphology while PGPR gave rise to polynuclear structures, regardless of the core material (vanillin or limonene). The obtained microcapsules demonstrated a sustained release patter. Grafting of the produced microcapsules onto cotton fabrics through an esterification reaction using citric acid as anon-toxic cross-linker followed by thermofixation and curing, was confirmed by SEM and FTIR spectroscopy.
    Type: Application
    Filed: March 26, 2018
    Publication date: October 8, 2020
    Inventors: Asma Mohamad Abdallah Sharkawy, tamer Shoeib, Alirio Egidio Rodrigues, Maria Filomena Filipe Barreiro, Isabel Patrícia Martins Fernandes