Inventor

Wolfgang Lengsfeld

Inventor

Limburgerhof, DE

Overview

6→

Patents

1987–1992

Patent span

Chemistry

Primary field (CPC C)

Patents· 6 as inventor

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

C07Cprimary

C07CAcyclic or carbocyclic compounds50%

C07DHeterocyclic compounds25%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry13%

C11BProducing, e.g. by pressing raw materials or by extraction from waste materials, refining or preserving fats, fatty substances, e.g. lanolin, fatty oils or waxes13%

PatentTitleYear

5,081,309'Preparation of 2-alkylcyclopentanones'1992 4,847,425'Prepartion of 4-isopropylcyclohexylmethanol and its alkyl ethers'1989 4,751,214'Use of 2-tert-butyl-4-methylcyclohexanol as a scent and as a component of scent compositions'1988 4,739,051'Preparation of morpholine'1988 4,736,030'Preparation of 1-alkyl- or 1-cycloalkylpiperazines'1988 4,709,072'Joint preparation of ethylene cyanohydrin and its ethers'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1992Patents assigned to BASF AG (6)· patent assignee history

1987–1992Based in Limburgerhof, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BASF AG	6	1987–1992

Locations

Location	Patents	Span
Limburgerhof, DE	6	1987–1992