Inventor

Christopher John Underwood

Inventor

Manchester, GB

Overview

5→

Patents

1992–2021

Patent span

Human necessities

Primary field (CPC A)

Patents· 5 as inventor

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

A61Fprimary

A61FFilters implantable into blood vessels19%

A61LMethods or apparatus for sterilising materials or objects in general19%

A01KAnimal husbandry6%

B05DProcesses for applying fluent materials to surfaces, in general6%

B29CShaping or joining of plastics6%

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. inserts6%

B29LIndexing scheme associated with subclass b29c, relating to particular articles6%

C08JWorking-up6%

C08LCompositions of macromolecular compounds6%

H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy6%

PatentTitleYear

11,104,768Process for the processing of a perfluoropolymer material2021 8,281,513'Fishing rod'2012 5,756,035'Method of making an access graft and a vascular prosthesis'1998 5,549,860'Method of forming a vascular prosthesis'1996 5,132,066'Method of forming a bio-compatible vascular prosthesis'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992Patents assigned to NEWTEC V P LTD (1)· patent assignee history

1992–1998Based in Manchester, GB· patent location history

1996–1998Patents assigned to POLYMEDICA IND INC (2)· patent assignee history

1996Based in Denton, GB· patent location history

2012Patents assigned to FLEX LTD D (1)· patent assignee history

2012Patents assigned to UNDERWOOD CHRISTOPHER JOHN (1)· patent assignee history

2012Based in Sale, GB· patent location history

2021Patents assigned to ESP TECH LIMITED (1)· patent assignee history

2021Based in Ince, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
POLYMEDICA IND INC	2	1996–1998
ESP TECH LIMITED	1	2021
FLEX LTD D	1	2012
NEWTEC V P LTD	1	1992
UNDERWOOD CHRISTOPHER JOHNself	1	2012

Locations

Location	Patents	Span
Manchester, GB	2	1992–1998
Ince, GB	1	2021
Sale, GB	1	2012
Denton, GB	1	1996