Inventor

Kuen-Wai Chiu

Inventor

Wexford, PA, US

Overview

6→

Patents

1982–2002

Patent span

Chemistry

Primary field (CPC C)

Patents· 6 as inventor

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

C07Cprimary

C07CAcyclic or carbocyclic compounds43%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry14%

C01BNon-metallic elements14%

C07DHeterocyclic compounds14%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium14%

PatentTitleYear

6,403,825'Processes for producing citrate esters'2002 5,420,322'Preparation of alkali-metal hexamethydisilazanes'1995 5,078,906'Strong base reagent'1992 5,025,096'Preparation of indole and indole derivatives'1991 4,910,337'Process for the preparation of .alpha.-arylalkanoic acids'1990 4,327,071'Method of preparing potassium hydride'1982

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1982–1995Patents assigned to MINE SAFETY APPLIANCES CO (5)· patent assignee history

1982–1991Based in Mars, PA, US· patent location history

1990–1995Based in Wexford, PA, US· patent location history

2002Patents assigned to REILLY IND INC (1)· patent assignee history

2002Based in Greensboro, NC, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MINE SAFETY APPLIANCES CO	5	1982–1995
REILLY IND INC	1	2002

Locations

Location	Patents	Span
Wexford, Pennsylvania, US	3	1990–1995
Mars, Pennsylvania, US	2	1982–1991
Greensboro, NC, US	1	2002