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Class Information
Number: 420/507
Name: Alloys or metallic compositions > Gold base
Description: Alloy, or metallic composition which contains over 50 percent of gold by weight.










Sub-classes under this class:

Class Number Class Name Patents
420/512 Iron, cobalt, or nickel containing 42
420/508 Palladium containing 61
420/510 Platinum containing 33
420/511 Silver containing 47


Patents under this class:
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Patent Number Title Of Patent Date Issued
8685878 Highly durable nanoscale electrocatalyst based on core shell particles Apr. 1, 2014
8551905 Metal-carbon compositions Oct. 8, 2013
8501087 Au-base bulk solidifying amorphous alloys Aug. 6, 2013
8440137 Au bonding wire for semiconductor device May. 14, 2013
8367266 Catalyst layer Feb. 5, 2013
8357719 Muscle relaxant using negatively charged gold nanoparticles with choline Jan. 22, 2013
8294271 Gold-tin-indium solder for processing compatibility with lead-free tin-based solder Oct. 23, 2012
8178463 Highly durable nanoscale electrocatalyst based on core shell particles May. 15, 2012
8147750 Gold alloy wire for ball bonding Apr. 3, 2012
8088713 Superconducting fault-current limiting element and the process for producing the same Jan. 3, 2012
7959855 White precious metal alloy Jun. 14, 2011
7875569 Supported catalyst, method for preparing the same, cathode electrode comprising the same, and fuel cell comprising the cathode electrode Jan. 25, 2011
7830008 Gold wire for connecting semiconductor chip Nov. 9, 2010
7659635 Semiconductor device and method of manufacturing the same Feb. 9, 2010
7390370 Gold bonding wires for semiconductor devices and method of producing the wires Jun. 24, 2008
7279054 Dental prosthesis method and alloys Oct. 9, 2007
7229510 Manganese alloy sputtering target and method for producing the same Jun. 12, 2007
7153375 Precious metal solder Dec. 26, 2006
7048813 Foil-form soldering metal and method for processing the same May. 23, 2006
6991854 Gold alloy bonding wire for semiconductor device Jan. 31, 2006
6929776 Jewelry alloy compositions Aug. 16, 2005
6913657 Hard precious metal alloy member and method of manufacturing same Jul. 5, 2005
6492593 Gold wire for semiconductor element connection and semiconductor element connection method Dec. 10, 2002
6413649 Silver-copper-nickel infiltration brazing filler metal and composites made therefrom Jul. 2, 2002
6403233 Article comprising creep-resistant and stress-reducing solder Jun. 11, 2002
6319617 Oxide-bondable solder Nov. 20, 2001
6306516 Article comprising oxide-bondable solder Oct. 23, 2001
H1934 Gold-tin solder suitable for self-aligning applications Jan. 2, 2001
6123786 Gold materials for accessories hardened with minor alloying components Sep. 26, 2000
6080492 Gold alloy thin wire for semiconductor devices Jun. 27, 2000
6063213 High-purity hard gold alloy and method of manufacturing same May. 16, 2000
6045635 High-purity hardened gold alloy and a process of producing the same Apr. 4, 2000
5989364 Gold-alloy bonding wire Nov. 23, 1999
5945065 Method for wedge bonding using a gold alloy wire Aug. 31, 1999
5922276 Gold alloy for porcelain/metal dental restorations Jul. 13, 1999
5853661 High gold content bio--compatible dental alloy Dec. 29, 1998
5833462 Precision attachments for dental technology capable of being cast on Nov. 10, 1998
5702814 Gold wire for bonding Dec. 30, 1997
5658664 Thin gold-alloy wire for semiconductor device Aug. 19, 1997
5593514 Amorphous metal alloys rich in noble metals prepared by rapid solidification processing Jan. 14, 1997
5518691 Precious metal material May. 21, 1996
5491034 Bonding wire for semiconductor element Feb. 13, 1996
5429795 10-Carat gold alloy for ornaments Jul. 4, 1995
5423680 Palladium, gallium and copper-free alloy having high thermal expansion coefficient Jun. 13, 1995
5415922 Resin-coated bonding device May. 16, 1995
5348593 Method of heat treating gold or gold alloy parts Sep. 20, 1994
5340529 Gold jewelry alloy Aug. 23, 1994
5338378 Dental gold alloy with age-hardenability at intraoral temperature Aug. 16, 1994
5298219 High purity gold bonding wire for semiconductor device Mar. 29, 1994
5286417 Method and composition for making mechanical and electrical contact Feb. 15, 1994

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