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Inventor

Ingrid Steenken-Richter

Inventor
Ludwigshafen, DE

Overview

2→
Patents
1991–1993
Patent span
Chemistry
Primary field (CPC C)

Patents· 2 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C02Fprimary
C02FTreatment of water, waste water, sewage, or sludge25%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds25%
D06PDyeing or printing textiles25%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests25%
PatentTitleYear
5,202,028'Removal of metal complex dyes from wastewaters'19935,015,754'Quaternized condensation products of trialkanolamines'1991

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1991–1993Patents assigned to BASF AG (2)· patent assignee history
1991–1993Based in Ludwigshafen, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BASF AG21991–1993
Locations
LocationPatentsSpan
Ludwigshafen, DE21991–1993