Title:Recent Patents Concerning the use of Nanotechnology-based Delivery Systems as Skin Penetration Enhancers
Volume: 13
Issue: 3
Author(s): Bruna Medeiros-Neves, Marina Cardoso Nemitz, Flávia Nathiely Silveira Fachel and Helder Ferreira Teixeira*
Affiliation:
- Graduate Program in Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Rio Grande do Sul, Porto Alegre, RS,Brazil
Keywords:
Nanotechnology-based delivery systems, patents, penetration enhancers, skin delivery, cosmetic purposes, nanostructures.
Abstract: Nanotechnology-based delivery systems have been considered a promising approach for
topical application, considering their characteristics of penetration into/across the skin. The present
review aimed to evaluate the recent international scenario of patents concerning the use of nanotechnology-
based delivery systems as skin penetration enhancers. A survey of recent patent documents was
conducted by using the Espacenet patent database including the terms “skin” in the title and “promot*
or enhanc* and penetrat* or absorp* or permeat*” and “nano*” with the truncation symbol (*) in the
abstract of documents. A total of 110 patents were published from 2008 to 2018, with 94 technologies
being considered. The results demonstrated an increase in innovations concerning nanotechnologybased
delivery systems as skin penetration enhancers in recent years. Most patent applicants are from
China (60.6%) and Korea (21.3%), and companies (68%) were the most prominent owners. The majority
of patent applications (76%) were intended for cosmetic purposes; the types of products and nanostructures
were also investigated. Overall results demonstrated the increased interest around the world
in patenting products involving skin permeation promotion and nanotechnology for pharmaceutical
and, mainly, for cosmetics purposes.