Patent · US Expired

Biological materials

US4225581A · kind A · utility

42Cited by

2References

2Claims

0Family size

Assignees

Jorg Kreuter · CH
Peter Paul Speiser · CH

Inventors

Jorg Kreuter · Bad Homburg vor der Höhe, DE
Peter Speiser · Zürich, CH

Key dates

Filing date	Aug 7, 1978
Grant date	Sep 30, 1980
Priority date	—
Expiry date	Aug 7, 1998

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S977/918
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

There are described processes for the preparation of submicroscopic particles of physiologically acceptable polymer associated with a biologically active material, by polymerizing a monomer in the presence of the biologically active material or by adsorbing the biologically active material upon preformed submicroscopic polymer particles. Where the biologically active material is an antigen, the particles are useful as constituents of injectable vaccines having an adjuvant effect.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.