Patents Assigned to Silica Gel Ges. m.b.H.
  • Superparamagnetic particles, process for producing the same and their use
    Patent number: 5916539
    Abstract: New superparamagnetic particles useful in medicine for destroying tumors, increasing immunity and diagnosing conditions are disclosed. For that purpose, very small superparamagnetic single-domain particles are aggregated and protected against further aggregation by chemical bonding of reactive stabilizer substances on the surface of the superparamagnetic particles. These new particles thus consist of stable, decomposable aggregates with a particle size in a range between 10 and 1000 nanometers and a defined behavior in a magnetic field.
    Type: Grant
    Filed: September 12, 1995
    Date of Patent: June 29, 1999
    Assignee: Silica Gel Ges. m.b.H.
    Inventor: Herbert Pilgrimm