Inventor

Wolfgang Metzner

Inventor

Krefeld, DE

Overview

16→

Patents

1977–2001

Patent span

Human necessities

Primary field (CPC A)

Patents· 16 as inventor

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

A01Nprimary

A01NPreservation of bodies of humans or animals or plants or parts thereof33%

B27KProcesses, apparatus or selection of substances for impregnating, staining, dyeing, bleaching of wood or similar materials, or treating of wood or similar materials with permeant liquids, not otherwise provided for26%

A24BManufacture or preparation of tobacco for smoking or chewing19%

E04BGeneral building constructions7%

A24DCigars4%

C08LCompositions of macromolecular compounds4%

C09DCoating compositions, e.g. paints, varnishes or lacquers4%

F26BDrying solid materials or objects by removing liquid therefrom4%

PatentTitleYear

6,227,205'Method for treatment of tobacco fine cut'2001 6,089,238'Ultralight coaxial cigarette including a multipart filter'2000 6,082,550'Cooling and sieve drum for tobacco material'2000 5,826,590'Method and plant for treating tobacco stems for the production of cut tobacco'1998 5,813,413'Method and plant for treating tobacco leaves for the production of cut tobacco'1998 5,722,431'Method and plant for treating tobacco leaves for the production of cut tobacco'1998 5,308,859'Composition for preservation of wood and wood-based materials'1994 5,303,502'Method and article for the preventive protection of materials against soil-dwelling pests'1994 5,248,450'Composition for use an an agent or concentrate for the preservation of wood or wood materials'1993 5,159,778'Method and article for the preventive protection of materials against soil-dwelling pests'1992 5,156,673'Composition for preservation of wood and wood-based materials'1992 4,935,457'Fiberboard method and composition'1990 4,824,484'Agent for preserving wood or wood-based materials and method for preparation and use thereof'1989 4,750,934'Composition or concentrate for conserving wood and wood materials'1988 4,337,093'Wood preserving composition and method of using same'1982 4,041,176'Preservative composition for wood and wood building materials and method of using same'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1988Patents assigned to DESOWAG BAYER HOLZSCHUTZ GMBH (2)· patent assignee history

1977–1994Based in Krefeld, DE· patent location history

1982–1994Patents assigned to SOLVAY WERKE GMBH (4)· patent assignee history

1989–1994Patents assigned to DESOWAG MATERIALSCHUTZ GMBH (4)· patent assignee history

1998–2001Patents assigned to BROWN & WILLIAMSON TOBACCO CORP (5)· patent assignee history

1998Patents assigned to BRITISH AMERICAN TOBACCO CO (1)· patent assignee history

1998–2000Based in Hamburg, DE· patent location history

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

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BROWN & WILLIAMSON TOBACCO CORP	5	1998–2001
DESOWAG MATERIALSCHUTZ GMBH	4	1989–1994
SOLVAY WERKE GMBH	4	1982–1994
DESOWAG BAYER HOLZSCHUTZ GMBH	2	1977–1988
BRITISH AMERICAN TOBACCO CO	1	1998

Locations

Location	Patents	Span
Krefeld, DE	10	1977–1994
Hamburg, DE	4	1998–2000
Bindlach, DE	2	2000–2001