Inventor
DUHL DAVID N
US22 patents
⚠️ This page may combine multiple inventors who share the name “DUHL DAVID N”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
UNITED TECHNOLOGIES CORP
21 patentsUS4719080AJan 12, 1988
Advanced high strength single crystal superalloy compositions
UNITED TECHNOLOGIES CORP211 citations99
US6007645ADec 28, 1999
Advanced high strength, highly oxidation resistant single crystal superalloy compositions having low chromium content
UNITED TECHNOLOGIES CORP75 citations96
US4209348AJun 24, 1980
Heat treated superalloy single crystal article and process
UNITED TECHNOLOGIES CORP111 citations96
US5346563ASep 13, 1994
Method for removing sulfur from superalloy articles to improve their oxidation resistance
UNITED TECHNOLOGIES CORP53 citations94
US4116723ASep 26, 1978
Heat treated superalloy single crystal article and process
UNITED TECHNOLOGIES CORP140 citations94
US6054096AApr 25, 2000
Stable heat treatable nickel superalloy single crystal articles and compositions
UNITED TECHNOLOGIES CORP37 citations92
US5068084ANov 26, 1991
Columnar grain superalloy articles
UNITED TECHNOLOGIES CORP31 citations92
US4908183AMar 13, 1990
High strength single crystal superalloys
UNITED TECHNOLOGIES CORP28 citations92
US4569824AFeb 11, 1986
Corrosion resistant nickel base superalloys containing manganese
UNITED TECHNOLOGIES CORP32 citations92
US4371404AFeb 1, 1983
Single crystal nickel superalloy
UNITED TECHNOLOGIES CORP40 citations92
US6355117B1Mar 12, 2002
Nickel base superalloy single crystal articles with improved performance in air and hydrogen
UNITED TECHNOLOGIES CORP24 citations91
US4512817AApr 23, 1985
Method for producing corrosion resistant high strength superalloy articles
UNITED TECHNOLOGIES CORP31 citations91
US4222794ASep 16, 1980
Single crystal nickel superalloy
UNITED TECHNOLOGIES CORP47 citations90
US4801513AJan 31, 1989
Minor element additions to single crystals for improved oxidation resistance
UNITED TECHNOLOGIES CORP27 citations86
US4402772ASep 6, 1983
Superalloy single crystal articles
UNITED TECHNOLOGIES CORP27 citations82
US5660649AAug 26, 1997
Method of making oxidation resistant single crystal superalloy castings
UNITED TECHNOLOGIES CORP16 citations81
US4597809AJul 1, 1986
High strength hot corrosion resistant single crystals containing tantalum carbide
UNITED TECHNOLOGIES CORP19 citations81
US4152488AMay 1, 1979
Gas turbine blade tip alloy and composite
UNITED TECHNOLOGIES CORP27 citations80
US4915907AApr 10, 1990
Single crystal articles having reduced anisotropy
UNITED TECHNOLOGIES CORP15 citations74
US4888069ADec 19, 1989
Nickel base superalloys having low chromium and cobalt contents
UNITED TECHNOLOGIES CORP13 citations74
US5540789AJul 30, 1996
Oxidation resistant single crystal superalloy castings
UNITED TECHNOLOGIES CORP11 citations73