Inventor

Paul Doswald

Inventor

Munchenstein, CH

Overview

16→

Patents

1981–2000

Patent span

Chemistry

Primary field (CPC C)

Patents· 16 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. pigments64%

D06PDyeing or printing textiles16%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests16%

C07DHeterocyclic compounds4%

PatentTitleYear

6,042,621'Fibre-reactive dyestuffs'2000 5,721,343'Fibre-reactive azo dyestuffs containing a halo substituted pyrimidine substituent'1998 5,698,681'Reactive disazo dyestuff compounds containing halo-substituted triazinyl rings'1997 5,693,765'Substituted 5-›5\'-›(5\"- Chloro-2\", 4\"-difluoropyrimid-6\"-ylamino) phenylcarbonylamino!-2\'-sulfophenyl-azo!-6-hydroxy-4-methyl-3-sulfomethy lpyrid-2-ones'1997 5,527,886'Dyes containing 5-cyano-2,4 or 4,6-dichloropyrimidyl fiber-reactive groups'1996 5,386,015'Monoazo and disazo compounds having 5-cyano-2,4-and 4,6-dichloropyrimidyl groups'1995 5,227,476'2-(3,6,8-trisulfonaphth-2-ylazo)-5-[2-chloro-4-[2-(5-chlo ro-2,4-difluoropyrimid-6-ylamino)-2-methyl-ethyl]amino-1,3,5-triazin-6-yl amino]phenyl urea salts thereof'1993 5,227,477'Dyes having one or two 2,4- or 4,6-dichloro-5-cyanopyrimidyl groups linked through bridging radicals containing at least two nitrogen atoms to chloro-1,3,5-triazinyl groups'1993 4,843,152'Copper complexes of disazo compounds having di- or tri- sulfonaphthol and 6-[2,4-di-(amino or substituted amino)-1,3,5-triazia-6-ylamino-]-1-hydroxy-3-sulfonaphthalene coupling component radicals'1989 4,699,626'Mixtures of copper complexes of disazo compounds: 4,4\'-(3,3\'-dihydroxybiphenylene) tetrazo component and disulfonaphthol and 3-sulfo-6-(2\'-chloro-4\'-chloro or hydroxy-1,3,5-triazin-6\'-ylamino)-naphth-1-ol coupling component'1987 4,665,162'1:1 and 1:2 metal complexes of sulfo group-free azo compound having on average at least 1.3 basic water-solubilizing groups'1987 4,587,292'Sulfo group-free azo compounds having on average at least 1.3 basic water-solubilizing groups in metal-free, 1:1 metal complex or 1:2 metal complex form'1986 4,550,158'Metal-free disazo compounds containing at least two basic water-solubilizing groups and having a 1-phenylpyrazole middle component radical and a 6-hydroxyprid-2-one terminal coupling component'1985 4,483,796'Sulfo group-free disazo and polyazo compounds containing two 1-phenylpyrazol-5-one coupling component radicals and at least two basic or cationic groups'1984 4,468,347'Sulfo group-free disazo and polyazo compounds containing at least two basic or cationic group and which are in metal-free or 2:1 metal complex form'1984 4,284,554'Monoazo compounds having a 6-(2\'-N-alkylanilino--4-chloro-1\',3\',5\'-triazinyl-6\'-amino or alkylamino)-1-hydroxy-3-sulfonaphthalene coupling component radical'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1996Patents assigned to SANDOZ LTD (11)· patent assignee history

1981–2000Based in Munchenstein, CH· patent location history

1997–1998Patents assigned to CLARIANT FINANCE BVI LTD (3)· patent assignee history

2000Patents assigned to CLARIANT FINANCE BV LIMITED (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SANDOZ LTD	11	1981–1996
CLARIANT FINANCE BVI LTD	3	1997–1998
CLARIANT FINANCE BV LIMITED	1	2000

Locations

Location	Patents	Span
Munchenstein, CH	16	1981–2000