Inventor

Manfred Ehlert

Inventor

Dormagen, DE

Overview

3→

Patents

1992–1994

Patent span

Performing operations

Primary field (CPC B)

Patents· 3 as inventor

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

B29Bprimary

B29BPreparation or pretreatment of the material to be shaped17%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts17%

B29LIndexing scheme associated with subclass b29c, relating to particular articles17%

C08JWorking-up17%

Y02WClimate change mitigation technologies related to wastewater treatment or waste management17%

C07CAcyclic or carbocyclic compounds8%

Y02PClimate change mitigation technologies in the production or processing of goods8%

PatentTitleYear

5,288,923'Preparation of ethers of diphenols'1994 5,214,072'Purification of polycarbonate, polyester carbonate or polyester waste'1993 5,151,452'Purification of polycarbonate and polyester carbonate waste'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–1994Patents assigned to BAYER AG (3)· patent assignee history

1992–1994Based in Dormagen, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAYER AG	3	1992–1994

Locations

Location	Patents	Span
Dormagen, DE	3	1992–1994