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Class Information
Number: 420/477
Name: Alloys or metallic compositions > Copper base > Zinc containing
Description: Alloy, or metallic composition which additionally contains zinc.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7354489 |
Lead-free copper alloy and a method of manufacture |
Apr. 8, 2008 |
| 7056396 |
Copper/zinc alloys having low levels of lead and good machinability |
Jun. 6, 2006 |
| 6799711 |
Minute copper balls and a method for their manufacture |
Oct. 5, 2004 |
| 6716541 |
Material for a metal strip |
Apr. 6, 2004 |
| 6632300 |
Copper alloy having improved stress relaxation resistance |
Oct. 14, 2003 |
| 6599378 |
Copper-based alloy, method for production of the alloy, and products using the alloy |
Jul. 29, 2003 |
| 6464810 |
Brass material, brass tube and their production method |
Oct. 15, 2002 |
| 6413330 |
Lead-free free-cutting copper alloys |
Jul. 2, 2002 |
| 6413651 |
Composite metal coil or plate and its manufacturing method |
Jul. 2, 2002 |
| 6391163 |
Method of enhancing hardness of sputter deposited copper films |
May. 21, 2002 |
| 6132528 |
Iron modified tin brass |
Oct. 17, 2000 |
| 6103188 |
High-conductivity copper microalloys obtained by conventional continuous or semi-continuous casting |
Aug. 15, 2000 |
| 6093499 |
Copper alloy foils |
Jul. 25, 2000 |
| 5997663 |
Nickel-free copper alloy |
Dec. 7, 1999 |
| 5961749 |
Use of a brass alloy for sanitary pipes |
Oct. 5, 1999 |
| 5908517 |
Alloy, in particular for use in the manufacture of frames for glass, jewelry, and the like |
Jun. 1, 1999 |
| 5885324 |
Method for the production of synthetic rutile |
Mar. 23, 1999 |
| 5839496 |
Composite material having anti-wear property and process for producing the same |
Nov. 24, 1998 |
| 5833920 |
Copper alloy for electronic parts, lead-frame, semiconductor device and connector |
Nov. 10, 1998 |
| 5766377 |
Copper-zinc-alloy for use in drinking-water installations |
Jun. 16, 1998 |
| 5658401 |
Copper-zinc alloy |
Aug. 19, 1997 |
| 5637160 |
Corrosion-resistant bismuth brass |
Jun. 10, 1997 |
| 5637132 |
Powder metallurgy compositions |
Jun. 10, 1997 |
| 5556446 |
Machinable brass compositions |
Sep. 17, 1996 |
| 5536293 |
Base metal composition for external electrode of multilayer electronic component |
Jul. 16, 1996 |
| 5445665 |
Machinable brass compositions |
Aug. 29, 1995 |
| 5441555 |
Powder metallurgy compositions |
Aug. 15, 1995 |
| 5429794 |
Alloys for brazing |
Jul. 4, 1995 |
| 5409552 |
Machinable copper alloys having reduced lead content |
Apr. 25, 1995 |
| 5344606 |
Fluid treatment alloy casting of Cu-Sn-Ni-Zn |
Sep. 6, 1994 |
| 5288458 |
Machinable copper alloys having reduced lead content |
Feb. 22, 1994 |
| 5286444 |
Copper bearing alloy |
Feb. 15, 1994 |
| 5282908 |
High strength .alpha. brass containing Mn, Si, Co, Fe, Sn and Pb |
Feb. 1, 1994 |
| 5262124 |
Alloy suited for use in water service and having improved machinability and forming properties |
Nov. 16, 1993 |
| 5137685 |
Machinable copper alloys having reduced lead content |
Aug. 11, 1992 |
| 5026433 |
Grain refinement of a copper base alloy |
Jun. 25, 1991 |
| 5004520 |
Method of manufacturing film carrier |
Apr. 2, 1991 |
| 4971758 |
Copper-based alloy connector for electrical devices |
Nov. 20, 1990 |
| 4935076 |
Copper alloy for use as material of heat exchanger |
Jun. 19, 1990 |
| 4886641 |
Electrical contact spring material made of copper base alloy of high strength and toughness with reduced anisotropy in characteristics |
Dec. 12, 1989 |
| 4872048 |
Semiconductor device having copper alloy leads |
Oct. 3, 1989 |
| 4822562 |
Copper alloy excellent in migration resistance |
Apr. 18, 1989 |
| 4751049 |
Connector and alloy |
Jun. 14, 1988 |
| 4749548 |
Copper alloy lead material for use in semiconductor device |
Jun. 7, 1988 |
| 4743427 |
High potent and high electroconductive copper alloy suitable for fin material of heat-exchanger |
May. 10, 1988 |
| 4741394 |
Radiator for motor cars |
May. 3, 1988 |
| 4732732 |
Migration resistant phosphor bronze alloy |
Mar. 22, 1988 |
| 4668471 |
Copper alloy lead material for leads of a semiconductor device |
May. 26, 1987 |
| 4642146 |
Alpha copper base alloy adapted to be formed as a semi-solid metal slurry |
Feb. 10, 1987 |
| 4631237 |
Wire electrode for spark-eroding systems |
Dec. 23, 1986 |
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