Inventor

Rudolf Bermes

Inventor

Ludwigshafen, DE

Overview

1977–2000

Patent span

Chemistry

Primary field (CPC C)

Patents· 14 as inventor

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

C09Bprimary

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments58%

C07CAcyclic or carbocyclic compounds13%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests13%

C09DCoating compositions, e.g. paints, varnishes or lacquers8%

C07DHeterocyclic compounds4%

D21HPulp compositions4%

PatentTitleYear

6,160,169'Preparation of amine salts of 4-nitrotoluene-2-sulfonic acid'2000 6,036,760'Use of aqueous liquid dye concentrates comprising a disazo dye in the inkjet process and also disazo dyes'2000 5,892,105'Preparation of amine salts of 4-nitrotoluene-2-sulfonic acid'1999 5,847,113'Preparation of sulfo-containing copper phthalocyanine dyes'1998 5,770,708'Preparation of phenylazonaphthalenes'1998 5,597,905'Preparation of benzothiazolylazoanilines'1997 5,531,797'Aqueous dye preparations containing coumarin dyes'1996 5,431,723'Use of liquid preparations of a disazo dye in the ink jet process and the diazo dye'1995 5,424,403'Preparation of aminoazo dyes'1995 5,173,086'Concentrated aqueous solutions of 2-phenylbenzothiazoleazo dyes with mixed cations'1992 4,804,387'Liquid black dye mixture'1989 4,668,789'Liquid dye salts'1987 4,560,745'Preparation of dyes which contain sulfonic acid groups and have a low electrolyte content'1985 4,058,517'Preparation of a concentrated solution of an anionic azo dye containing a sulfonic acid group'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–2000Patents assigned to BASF AG (14)· patent assignee history

1977–2000Based in Ludwigshafen, DE· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BASF AG	14	1977–2000

Locations

Location	Patents	Span
Ludwigshafen, DE	14	1977–2000