Patent · US Expired

Modified huminates and their preparation

US5360915A · kind A · utility

3Cited by

3References

2Claims

0Family size

Assignee

Rutgerswerke Aktiengesellschaft · DE

Inventors

Urs N. Riede · Schallstadt, DE
Bernhard Seubert · Edingen-Neckarhausen, DE

Key dates

Filing date	Oct 14, 1992
Grant date	Nov 1, 1994
Priority date	—
Expiry date	Oct 14, 2012

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61P17/00
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A modified alkali metal or ammonium huminate being made from molecules of the group consisting of ##STR1## wherein R.sub.1, R.sub.3 and R.sub.4 are individually hydrogen or --OH, R.sub.2 is ##STR2## or --CH.sub.2 -- and R.sub.5 and R.sub.6 are individually selected from the group consisting of hydrogen, --OH and --OCH.sub.3, with the proviso that R.sub.4, R.sub.5 and R.sub.6 are not all hydrogen at the same time and their preparation and their medical uses.

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