Inventor

Leslie C. Kun

Inventor

Williamsville, NY, US

Overview

16→

Patents

1977–2001

Patent span

Mechanical engineering

Primary field (CPC F)

Patents· 16 as inventor

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

Y10Sprimary

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests16%

F28FDetails of heat-exchange and heat-transfer apparatus, of general application11%

Y10TTechnical subjects covered by former us classification11%

F01DNon-positive displacement machines or engines, e.g. steam turbines9%

F25JLiquefaction, solidification or separation of gases or gaseous or liquefied gaseous mixtures by pressure and cold treatment or by bringing them into the supercritical state9%

B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material7%

F28DHeat-exchange apparatus, not provided for in another subclass, in which the heat-exchange media do not come into direct contact7%

F01CRotary-piston or oscillating-piston machines or engines5%

F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids5%

F04DNon-positive-displacement pumps5%

PatentTitleYear

6,253,778'Rotary valve'2001 6,212,904'Liquid oxygen production'2001 6,143,056'Rotary valve for two bed vacuum pressure swing absorption system'2000 5,348,456'Helical dry screw expander with sealing gas to the shaft seal system'1994 5,228,298'Cryogenic rectification system with helical dry screw expander'1993 4,978,278'Turbomachine with seal fluid recovery channel'1990 4,904,158'Method and apparatus for cryogenic liquid expansion'1990 4,900,165'Bearing support system'1990 4,778,497'Process to produce liquid cryogen'1988 4,430,011'Integral bearing system'1984 4,253,519'Enhancement for film condensation apparatus'1981 RE030077'Surface for boiling liquids'1979 4,133,227'Direct machining method of manufacture of isostress contoured dies'1979 4,119,144'Improved heat exchanger headering arrangement'1978 4,024,623'Manufacture of isostress contoured dies'1977 4,023,618'Heat exchanger headering arrangement'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1990Patents assigned to UNION CARBIDE CORP (10)· patent assignee history

1977–2001Based in Williamsville, NY, US· patent location history

1984–1990Based in Grand Island, NY, US· patent location history

1993–2001Patents assigned to PRAXAIR TECHNOLOGY INC (4)· patent assignee history

2001Patents assigned to IN X CORP (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
UNION CARBIDE CORP	10	1977–1990
PRAXAIR TECHNOLOGY INC	4	1993–2001
IN X CORP	1	2001

Locations

Location	Patents	Span
Williamsville, New York, US	11	1977–2001
Grand Island, New York, US	5	1984–1990