Inventor

Bernd-Dieter Holdt

Inventor

Duesseldorf, DE

Overview

13→

Patents

1976–1999

Patent span

Chemistry

Primary field (CPC C)

Patents· 13 as inventor

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

C11Dprimary

C11DDetergent compositions45%

A61LMethods or apparatus for sterilising materials or objects in general10%

C09GPolishing compositions10%

E03DWater-closets or urinals with flushing devices10%

A47KSanitary equipment5%

B05BSpraying apparatus5%

B65DContainers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers5%

C09KMaterials for miscellaneous applications, not provided for elsewhere5%

D06LDry-cleaning, washing or bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods5%

PatentTitleYear

5,877,138'Carpet cleaning formulation'1999 5,431,840'Process for the production of cleaning and care preparations containing APG emulsifier'1995 5,356,479'Method for cleaning bathroom fittings'1994 4,834,900'Process for removing stains from fabrics'1989 4,820,449'Cleaning block for flush toilet tanks'1989 4,813,084'Cleaning system for toilet bowls'1989 4,808,329'Cleaning preparation for glass'1989 4,683,072'Two-component cleaner and disinfectant tablet'1987 4,659,494'Carpet cleaning composition contains a cellulose powder from a hardwood source'1987 4,578,207'Two component cleaner and disinfectant tablet'1986 4,554,083'Liquid leather care compositions'1985 4,541,551'Sealing top for containers for powdered or granular materials'1985 3,952,339'Automatic toilet cleaning device'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976Patents assigned to HENKEL & CIE GMBH (1)· patent assignee history

1976–1986Based in Dusseldorf, DE· patent location history

1985–1999Patents assigned to HENKEL KGAA (12)· patent assignee history

1985–1999Based in Duesseldorf, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HENKEL KGAA	12	1985–1999
HENKEL & CIE GMBH	1	1976

Locations

Location	Patents	Span
Duesseldorf, DE	10	1985–1999
Dusseldorf, DE	3	1976–1986