Inventor

Haydn R. Williams

Inventor

Dollard-des-Ormeaux, CA

Overview

3→

Patents

1986–1991

Patent span

Chemistry

Primary field (CPC C)

Patents· 3 as inventor

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

C07Dprimary

C07DHeterocyclic compounds25%

A61KPreparations for medical, dental or toiletry purposes17%

C07CAcyclic or carbocyclic compounds17%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium17%

C07KPeptides17%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations8%

PatentTitleYear

5,017,583'Leukotriene antagonists'1991 4,622,403'6-H dibenz[b,f]thiepin compounds'1986 4,609,744'4-oxo-benzopyran carboxylic acids'1986

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1986–1991Patents assigned to MERCK FROSST CANADA INC (3)· patent assignee history

1986–1991Based in Dollard-des-Ormeaux, CA· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MERCK FROSST CANADA INC	3	1986–1991

Locations

Location	Patents	Span
Dollard-des-Ormeaux, CA	3	1986–1991