Inventor

Thomas Leigh

Inventor

Macclesfield, GB

Overview

7→

Patents

1979–1989

Patent span

Chemistry

Primary field (CPC C)

Patents· 7 as inventor

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

C07Cprimary

C07CAcyclic or carbocyclic compounds46%

Y02PClimate change mitigation technologies in the production or processing of goods15%

B29CShaping or joining of plastics8%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts8%

C08JWorking-up8%

C08LCompositions of macromolecular compounds8%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

PatentTitleYear

4,833,172'Stretched microporous material'1989 4,780,252'Process for separating optical isomers of cyclopropane carboxylic acids'1988 4,683,089'Cyclopropane carboxylic acid derivatives'1987 4,607,119'Preparation of cyanoesters'1986 4,391,983'Carboxamidoesters'1983 4,306,077'Process for separating cis and trans isomers of cyclopropane carboxylic acids'1981 4,146,554'Preparation of cyanoesters'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1987Patents assigned to ICI LTD (3)· patent assignee history

1979–1986Based in Alderley Edge, GB· patent location history

1981–1988Based in Macclesfield, GB· patent location history

1983–1988Patents assigned to ICI PLC (3)· patent assignee history

1989Patents assigned to PPG INDUSTRIES INC (1)· patent assignee history

1989Based in Uniontown, OH, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ICI LTD	3	1979–1987
ICI PLC	3	1983–1988
PPG INDUSTRIES INC	1	1989

Locations

Location	Patents	Span
Macclesfield, GB	3	1981–1988
Alderley Edge, GB	3	1979–1986
Uniontown, OH, US	1	1989