The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 22, 1988
Filed:
Mar. 04, 1987
Hans Wielinger, Weinheim, DE;
Helmut Freitag, Weinheim, DE;
Boehringer Mannheim GmbH, Mannheim, DE;
Abstract
Hydrophilic glass fibers which have bonded to their surfaces a layer of silane molecules of the formula ##STR1## are useful for the separation of plasma from blood for haemostasiological testing. In the formula: the molecule is bonded at its end oxygen to a surface of a glass fibre; R.sub.1 is C.sub.2 -C.sub.6 alkylene; X is OH, C.sub.1 -C.sub.6 alkoxy, having n carbon atoms and up to (n-1) OH groups in which n is 1-6, or an amino acid or peptide residue; and each of R'.sub.3 and R'.sub.3 is C.sub.1 -C.sub.6 alkyl, an oxygen bridge to the silicon atom of another silane molecule or an oxygen bridge to the glass surface. The fibres have an average diameter of from 0.2 to 5 microns and a density of 0.1 to 0.5 g/cm.sup.3.