Insoluble gas-filled microspheres containing a hydrophobic barrier Grant US-6063362-A United States of America 16 May 2000
Process for making insoluble gas-filled microspheres containing a liquid hydrophobic… Grant US-5965109-A United States of America 12 Oct 1999
Gas-filled amino acid block co-polymer microspheres useful as ultrasound contrast agents Grant US-5820850-A United States of America 13 Oct 1998
Process for making gas-filled microspheres containing a liquid hydrophobic barrier Grant US-5730955-A United States of America 24 Mar 1998
Gas-filled microspheres with fluorine-containing shells Grant US-5562893-A United States of America 08 Oct 1996