Inventor

Axel Vogel

Inventor

Cologne, DE

Overview

1976–1983

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.

C07Cprimary

C07CAcyclic or carbocyclic compounds91%

C07BGeneral methods of organic chemistry9%

PatentTitleYear

4,377,535'Process for the preparation of nitro-T-acid (8-nitro-naphthalene-1,3,6-trisulphonic acid)'1983 4,348,334'Process for producing the magnesium salt of 3-nitro-naphthalene-1,5-disulfonic acid (nitro-Armstrong\'s acid)'1982 4,341,720'Process for the preparation of oxalyl chloride'1982 4,045,455'Process for separating 1,5-dinitroanthraquinone and 1,8-dinitroanthraquinone from dinitroanthraquinone mixtures'1977 4,036,838'Process for the production of nitro derivatives of aromatic compounds'1977 4,036,895'Process for preparing 2-methylpropane-1,3-diol'1977 3,985,778'Process for the purification of crude nitroanthraquinone'1976 3,963,761'Process for the production of dinitro-anthraquinones'1976 3,939,185'Process for the preparation of 1-nitro-anthraquinone which is practically free of 1,5-dinitro-anthraquinone'1976 3,931,251'Process for the manufacture of 1-nitroanthraquinone'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–1983Patents assigned to BAYER AG (9)· patent assignee history

1976–1977Based in Cologne, DE· patent location history

1982Patents assigned to CIBA GEIGY AG (1)· patent assignee history

1982–1983Based in Odenthal, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BAYER AG	9	1976–1983
CIBA GEIGY AG	1	1982

Locations

Location	Patents	Span
Cologne, DE	7	1976–1977
Odenthal, DE	3	1982–1983