Inventor

Hans-Ulrich Hempel

Inventor

Overath, DE

Overview

10→

Patents

1979–1990

Patent span

Chemistry

Primary field (CPC C)

Patents· 10 as inventor

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

B01Dprimary

B01DSeparation23%

C11DDetergent compositions13%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium10%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests10%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds6%

A61KPreparations for medical, dental or toiletry purposes3%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations3%

A61QSpecific use of cosmetics or similar toiletry preparations3%

C02FTreatment of water, waste water, sewage, or sludge3%

C03BManufacture, shaping, or supplementary processes3%

PatentTitleYear

4,891,154'Defoaming agents and process of defoaming'1990 4,759,962'Elastomeric sealing gasket assembly and its method of manufacture'1988 4,561,873'Modification of deposit formation in glass furnace heat recovery'1985 4,504,410'Organopolysiloxane anti-foaming agents'1985 4,421,666'Powdery antifoaming compositions for aqueous systems, their preparation and use'1983 4,396,524'Preparation of polysiloxane block polymers and their use as foam inhibitors'1983 4,384,976'Foam inhibitor useful in synthetic resin, lacquer, and paint dispersions'1983 4,339,342'Anti-foaming agents, the preparation thereof, and their use in aqueous systems'1982 4,267,108'Hydroxyalkane diphosphonic acids'1981 4,176,127'Process for the production of silanes from oleic acid esters'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1990Patents assigned to HENKEL KGAA (9)· patent assignee history

1979–1990Based in Overath-Vilkerath, DE· patent location history

1981–1985Based in Overath, DE· patent location history

1985Patents assigned to HENKEL & CIE GMBH (1)· patent assignee history

1988Based in Langenfeld, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
HENKEL KGAA	9	1979–1990
HENKEL & CIE GMBH	1	1985

Locations

Location	Patents	Span
Overath, DE	6	1981–1985
Overath-Vilkerath, DE	3	1979–1990
Langenfeld, DE	1	1988