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Inventor

Alan Thomas Leaver

Inventor
Manchester, GB

Overview

10→
Patents
1990–2008
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.

C09Bprimary
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments32%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests28%
D06PDyeing or printing textiles24%
C09DCoating compositions, e.g. paints, varnishes or lacquers8%
G03GElectrography8%
PatentTitleYear
7,416,591'Disperse dye mixtures'20087,118,604'Non azo disperse dye mixtures'20066,641,620'Disperse dye mixtures'20036,589,296'Disperse dye mixtures'20036,562,082'Disperse dye mixture'20036,022,957'Azothiophenes and mixtures thereof'20005,928,388'Dye mixtures'19995,779,781'Ink and toner compositions containing substituted phenyl AZO thiophene dye'19985,779,778'Ink composition containing a mixture of benzodifuranone dyes'19984,960,434'Azo disperse dye mixture giving bright blue shades on polyester textiles'1990

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1990Patents assigned to ICI PLC (1)· patent assignee history
1990Based in Worsley, GB· patent location history
1998Patents assigned to ZENECA LTD (2)· patent assignee history
1998–2008Based in Manchester, GB· patent location history
1999–2003Patents assigned to BASF AG (5)· patent assignee history
2003Based in Eccles, GB· patent location history
2006–2008Patents assigned to DYSTAR TEXTILFARBEN GMBH & CO (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
BASF AG51999–2003
DYSTAR TEXTILFARBEN GMBH & CO22006–2008
ZENECA LTD21998
ICI PLC11990
Locations
LocationPatentsSpan
Manchester, GB71998–2008
Eccles, GB22003
Worsley, GB11990