| UNIVERSITY OF WITWATERSRAND Patent applications |
| Patent application number | Title | Published |
|---|
| 20100296219 | SPARK GAP PROTECTION DEVICE - A spark gap protection device is provided. The device comprises a plurality of spark gaps and a plurality of windings. Each spark gap is connected to at least one winding which is inductively coupled to an associated winding connected to another spark gap so that, in use, a surge current flowing across a spark gap and through a winding connected to the spark gap induces a voltage in the associated inductively coupled winding connected to another spark gap. This forces the other spark gap to trigger, thereby distributing the surge current between the spark gaps. | 11-25-2010 |
| 20080310072 | Spark Gap Protection Device - A spark gap protection device is provided. The device comprises a plurality of spark gaps and a plurality of windings. Each spark gap is connected to at least one winding which is inductively coupled to an associated winding connected to another spark gap so that, in use, a surge current flowing across a spark gap and through a winding connected to the spark gap induces a voltage in the associated inductively coupled winding connected to another spark gap. This forces the other spark gap to trigger, thereby distributing the surge current between the spark gaps. | 12-18-2008 |
| 20080248116 | COMPOSITION FOR STIMULATING DE NOVO BONE INDUCTION - This invention relates to a composition for stimulating de novo bone induction in a mammal, to the use of this composition in stimulating de novo bone induction in a mammal and to a method of treating a mammal to stimulate de novo bone induction. The use and method involve introducing the composition, preferably by local injection, into the mammal at a site where de novo bone induction is desired. The composition consists of a combination of a bone morphogenetic protein and a reconstituted basement membrane which, in a preferred embodiment of the invention is Matrigel®. The Matrigel® serves, at least partly, to retain the bone morphogenetic protein at the site of introduction for a period sufficient to trigger a bone differentiation cascade. | 10-09-2008 |
