Inventor

Leslie D. Bell

Inventor

Thame, GB

Overview

1988–2003

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.

A61Kprimary

A61KPreparations for medical, dental or toiletry purposes28%

C07KPeptides20%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests20%

C12NMicroorganisms or enzymes15%

C12YEnzymes7%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations6%

C07DHeterocyclic compounds2%

C07HSugars2%

PatentTitleYear

6,545,124'Peptide linkers for covalent linking polypeptide cell modulators'2003 6,130,333'Bicyclic imidazolyl derivatives as phosphodiesterase inhibitors, pharmaceutical compositions and method of use'2000 5,244,676'Modified tissue plasminogen activator with modified glycosylation site'1993 5,114,711'Covalently linked polypeptide cell modulators such as interferon-lymphotoxin conjugates'1992 5,100,666'Modified tissue plasminogen activator K2K2SP'1992 5,037,752'Modified tissue plasminogen activator substituted at cysteine-73 and lysine-277'1991 4,963,357'Tissue plasminogen activator modified by the substitution of Arg for Cys at position 73, methods and pharmaceutical compositions therefor'1990 4,935,233'Covalently linked polypeptide cell modulators'1990 4,914,033'Structure and properties of modified interferons'1990 4,793,995'Modified (1-56) beta interferons'1988 4,769,233'Structure and properties of modified interferons'1988 4,753,795'Modified (80-113) beta interferons'1988 4,751,077'Interferons with novel cysteine pattern'1988 4,738,844'Modified (1-28) beta interferons'1988 4,738,845'Modified (115-145) beta interferons'1988 4,719,180'Synthetic urogastrone gene, corresponding plasmid recombinants, transformed cells, production thereof and urgastrone expression'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1992Patents assigned to SEARLE & CO (10)· patent assignee history

1988–2003Based in Thame, GB· patent location history

1990–2000Patents assigned to MONSANTO CO (5)· patent assignee history

1990–2000Based in Chesterfield, MO, US· patent location history

2003Patents assigned to PHARMACIA CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SEARLE & CO	10	1988–1992
MONSANTO CO	5	1990–2000
PHARMACIA CORP	1	2003

Locations

Location	Patents	Span
Thame, GB	11	1988–2003
Chesterfield, MO, US	5	1990–2000