Intellectual Property India Publishes Patent Application for Sanitary Pad System Comprising Multi-Layered Menstrual Blood Filtration Matrix And Spatially Zoned Alginate Core For Anti-Occlusive In-Situ Gelation

MUMBAI, India, Nov. 2 -- Intellectual Property India has published a patent application (202611109870 A) filed by Rishov Chatterjee; Jagpreet Kour; Dev Kashyap; Dr. Manish Kumar; Spandan Giri; Navan Garg; Dr. Kusum Passi; Mahak Rana; Harmanpreet Kaur; Priyanshu Prajapati; and Sharannya Roy on September 13, 2026, for Sanitary Pad System Comprising Multi-Layered Menstrual Blood Filtration Matrix And Spatially Zoned Alginate Core For Anti-Occlusive In-Situ Gelation.

Inventors include Rishov Chatterjee; Jagpreet Kour; Dev Kashyap; Dr. Manish Kumar; Spandan Giri; Navan Garg; Dr. Kusum Passi; Mahak Rana; Harmanpreet Kaur; Priyanshu Prajapati; and Sharannya Roy.

The application for the patent was published on October 30, 2026, under issue no. 44/2026.

Abstract: The present invention relates to a sanitary pad system comprising a multi-layered menstrual blood filtration fiber matrix and a spatially zoned alginate core providing anti-occlusive in-situ gelation. The filtration matrix comprises a cascading pore-size gradient configured for component-selective filtration of menstrual blood, wherein a relatively non-liquid fraction is segregated upstream while a relatively aqueous fraction proceeds towards a downstream gelation region. Directional capillary transport conveys the aqueous fraction towards a sodium alginate-containing zone spatially associated with a calcium-ion-containing zone. Upon wetting of the alginate-containing zone, calcium ions contact the aqueous fraction preferentially at bottom and/or edge portions, thereby initiating in-situ ionic cross-linking while reducing formation of a continuous gel barrier across the upper fluid-receiving surface. The upstream segregation of the relatively non-liquid fraction increases availability of the chemical reaction surface for gelation of the aqueous fraction. The invention consequently provides sequential mechanical filtration, selective fractionation, directional capillary transport and spatially controlled chemical gelation within a sanitary pad system while reducing premature top-surface occlusion.

Disclaimer: Curated by HT Syndication.