Inventor

Otto Lorenz

Inventor

Aachen, DE

Overview

9→

Patents

1979–1994

Patent span

Chemistry

Primary field (CPC C)

Patents· 9 as inventor

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

C08Gprimary

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds30%

B65HHandling thin or filamentary material, e.g. sheets, webs, cables10%

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 for5%

C07CAcyclic or carbocyclic compounds5%

C08JWorking-up5%

C08LCompositions of macromolecular compounds5%

C14CChemical treatment of hides, skins or leather, e.g. tanning, impregnating, finishing5%

D06BTreating textile materials using liquids, gases or vapours5%

D06MTreatment, not provided for elsewhere in class d06, of fibres, threads, yarns, fabrics, feathers or fibrous goods made from such materials5%

D21HPulp compositions5%

PatentTitleYear

5,307,973'Profiled rod for a web-spreading roller'1994 5,264,519'Process for preparing polyurethanes with 4,4\'-(.omega.-hydroxyalkoxy)-biphenyls'1993 5,025,064'Process for the production of aqueous polyurethane dispersions'1991 4,673,803'Method of detecting and evaluating identification codes on continuously moving webs'1987 4,528,323'Process for the preparation of aqueous dispersions of polyurethanes containing chemically fixed carboxylate and/or sulphonate groups'1985 4,385,137'Dispersions of polymers containing sulphonate groups, a process for the production thereof and their use as coating agents'1983 4,342,412'Tilt-box for guiding a continuously moving web'1982 4,172,191'Process for the preparation of polyisocyanates addition products containing carboxylate groups'1979 4,160,753'Process for the production of polyamide-polyureas and dispersions thereof in water'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1993Patents assigned to BAYER AG (6)· patent assignee history

1979–1991Based in Roetgen, DE· patent location history

1982–1987Patents assigned to LORENZ OTTO (2)· patent assignee history

1982Patents assigned to KELLER MERTEN (1)· patent assignee history

1982–1987Based in Augsburg, DE· patent location history

1983–1993Based in Aachen, DE· patent location history

1987Patents assigned to BRUNNER GERHARD (1)· patent assignee history

1994Patents assigned to ERHARDT & LEIMER GMBH (1)· patent assignee history

1994Based in Neusass, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAYER AG	6	1979–1993
LORENZ OTTOself	2	1982–1987
BRUNNER GERHARD	1	1987
ERHARDT & LEIMER GMBH	1	1994
KELLER MERTEN	1	1982

Locations

Location	Patents	Span
Aachen, DE	3	1983–1993
Roetgen, DE	3	1979–1991
Augsburg, DE	2	1982–1987
Neusass, DE	1	1994