Method of making metal oxide nanoparticles in an exfoliated silicate framework Grant US-7169348-B2 United States of America 30 Jan 2007
Permeable cement composition and method for preparing the same Grant US-7052543-B2 United States of America 30 May 2006
Permeable cement composition and method for preparing the same Grant US-7040405-B2 United States of America 09 May 2006
Permeable cement composition and method for preparing the same Grant US-6938692-B2 United States of America 06 Sep 2005