Inventor

Keh-Minn Chang

Inventor

Schenectady, NY, US

Overview

33→

Patents

1984–2021

Patent span

Chemistry

Primary field (CPC C)

Patents· 33 as inventor

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

C22Cprimary

C22CAlloys49%

C22FChanging the physical structure of non-ferrous metals and non-ferrous alloys21%

B22FWorking metallic powder12%

B23KSoldering or unsoldering2%

B81BMicrostructural devices or systems, e.g. micromechanical devices2%

B81CProcesses or apparatus specially adapted for the manufacture or treatment of microstructural devices or systems2%

C21DModifying the physical structure of ferrous metals2%

F01DNon-positive displacement machines or engines, e.g. steam turbines2%

F05DIndexing scheme for aspects relating to non-positive-displacement machines or engines, gas-turbines or jet-propulsion plants2%

H01LSemiconductor devices2%

PatentTitleYear

11,084,713Bypass structure2021 5,662,749'Supersolvus processing for tantalum-containing nickel base superalloys'1997 5,393,483'High-temperature fatigue-resistant nickel based superalloy and thermomechanical process'1995 5,161,950'Dual alloy turbine disk'1992 5,160,557'Method for improving low temperature ductility of directionally solidified iron-aluminides'1992 5,143,563'Creep, stress rupture and hold-time fatigue crack resistant alloys'1992 5,087,305'Fatigue crack resistant nickel base superalloy'1992 5,061,324'Thermomechanical processing for fatigue-resistant nickel based superalloys'1991 4,985,201'Generator rotor steels'1991 4,981,644'Nickel-base superalloy systems'1991 4,911,884'High strength non-magnetic alloy'1990 4,888,064'Method of forming strong fatigue crack resistant nickel base superalloy and product formed'1989 4,820,353'Method of forming fatigue crack resistant nickel base superalloys and product formed'1989 4,820,358'Method of making high strength superalloy components with graded properties'1989 4,816,084'Method of forming fatigue crack resistant nickel base superalloys'1989 4,814,023'High strength superalloy for high temperature applications'1989 4,793,868'Thermomechanical method of forming fatigue crack resistant nickel base superalloys and product formed'1988 4,764,226'Ni.sub.3 A1 alloy of improved ductility based on iron and niobium substituent'1988 4,743,315'Ni.sub.3 Al alloy of improved ductility based on iron substituent'1988 4,743,316'Rapidly solidified zirconium modified nickel aluminide of improved strength'1988 4,725,322'Carbon containing boron doped tri-nickel aluminide'1988 4,710,247'Rapidly solidified tri-nickel aluminide base alloy'1987 4,685,977'Fatigue-resistant nickel-base superalloys and method'1987 4,676,829'Cold worked tri-nickel aluminide alloy compositions'1987 4,668,311'Rapidly solidified nickel aluminide alloy'1987 4,661,156'Nickel aluminide base compositions consolidated from powder'1987 4,650,519'Nickel aluminide compositions'1987 4,642,139'Rapidly solidified nickel aluminide of improved stoichiometry and ductilization and method'1987 4,613,480'Tri-nickel aluminide composition processing to increase strength'1986 4,613,368'Tri-nickel aluminide compositions alloyed to overcome hot-short phenomena'1986 4,609,528'Tri-nickel aluminide compositions ductile at hot-short temperatures'1986 4,606,888'Inhibition of grain growth in Ni.sub.3 Al base alloys'1986 4,478,791'Method for imparting strength and ductility to intermetallic phases'1984

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1984–1997Patents assigned to GEN ELECTRIC (32)· patent assignee history

1984–1995Based in Schenectady, NY, US· patent location history

1997Based in Morgantown, WV, US· patent location history

2021Patents assigned to TAIWAN SEMICONDUCTOR MFG CO LTD (1)· patent assignee history

2021Based in Kaohsiung, TW· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
GEN ELECTRIC	32	1984–1997
TAIWAN SEMICONDUCTOR MFG CO LTD	1	2021

Locations

Location	Patents	Span
Schenectady, New York, US	31	1984–1995
Kaohsiung, TW	1	2021
Morgantown, WV, US	1	1997