Inventor

Fritz Puchner

Inventor

Cologne, DE

Overview

1979–2003

Patent span

Chemistry

Primary field (CPC C)

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

D21Hprimary

D21HPulp compositions30%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds22%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds9%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments9%

C09DCoating compositions, e.g. paints, varnishes or lacquers9%

C09CTreatment of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties4%

C09KMaterials for miscellaneous applications, not provided for elsewhere4%

D06MTreatment, not provided for elsewhere in class d06, of fibres, threads, yarns, fabrics, feathers or fibrous goods made from such materials4%

D06PDyeing or printing textiles4%

Y10TTechnical subjects covered by former us classification4%

PatentTitleYear

Assembled from patent assignee/location history and declaration credentials.

1979–2003Patents assigned to BAYER AG (11)· patent assignee history

1979–1998Based in Cologne, DE· patent location history

2000–2001Based in Koln, DE· patent location history

2002–2003Based in Kln, DE· patent location history

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAYER AG	11	1979–2003

Locations