"Patent: Combination product for the prevention of sexually transmitted" by Barry R. O'Keefe, Melissa Robbiani et al.
Disclosed are compositions for inhibiting transmission of a sexually transmitted infection that contain one or more polyanionic microbicides, such as carrageenans, including lambda carrageenan, as well as water-soluble metal salts and specified lectins. Also disclosed are methods for making and using the compositions.
O'Keefe, Barry R., Melissa Robbiani, and José Fernández-Romero. Combination product for the prevention of sexually transmitted infections. US Patent 10,143,721, filed 2015, and issued 2018.