Assignee
DOWA MINING CO
JP·211 granted patents·25 pending applications·3,472 citations·filing 1973–2008
Top patents by PatentIndex Score
236 records- 0195US7138756B2Phosphor for electron beam excitation and color display device using the sameDOWA MINING CO·Filed 2004·Granted Nov 21, 2006·88 cites·9 claims
- 0293US7273568B2Phosphor and production method of the same, method of shifting emission wavelength of phosphor, and light source and LEDDOWA MINING CO·Filed 2004·Granted Sep 25, 2007·47 cites·32 claims
- 0393US5904771AMethod of subliming material in CVD film preparation methodDOWA MINING CO·Filed 1997·Granted May 18, 1999·106 cites·8 claims
- 0493US5868871AMethod and apparatus for carburizing, quenching and temperingDOWA MINING CO·Filed 1997·Granted Feb 9, 1999·69 cites·15 claims
- 0593US4572822AMethod of recovering metals from industrial by-productsDOWA MINING CO·Filed 1984·Granted Feb 25, 1986·38 cites·19 claims
- 0692US7252788B2Phosphor, light source and LEDDOWA MINING CO·Filed 2004·Granted Aug 7, 2007·65 cites·15 claims
- 0792US6020945ADisplay device with a transparent optical filterDOWA MINING CO·Filed 1997·Granted Feb 1, 2000·257 cites·13 claims
- 0891US6483623B1Lamp apparatus for use in optical communication and a process for producing the sameDOWA MINING CO·Filed 1998·Granted Nov 19, 2002·128 cites·8 claims
- 0991US6061160AComponent device for optical communicationDOWA MINING CO·Filed 1997·Granted May 9, 2000·128 cites·14 claims
- 1089US7345418B2Phosphor mixture and light emitting device using the sameDOWA MINING CO·Filed 2004·Granted Mar 18, 2008·52 cites·18 claims
- 1189US6312762B1Process for production of copper or copper base alloysDOWA MINING CO·Filed 2000·Granted Nov 6, 2001·26 cites·14 claims
- 1289US5036187APhotodetecting circuit with compensated integration signalDOWA MINING CO·Filed 1990·Granted Jul 30, 1991·84 cites·2 claims
- 1388US6699337B2Copper-base alloys having improved punching properties on press and a process for producing themDOWA MINING CO·Filed 2001·Granted Mar 2, 2004·22 cites·17 claims
- 1488US6197134B1Processes for producing fcc metalsDOWA MINING CO·Filed 1999·Granted Mar 6, 2001·29 cites·10 claims
- 1588US5013464ALiquid suspension composition containing gallium particles and process for producing the sameDOWA MINING CO·Filed 1990·Granted May 7, 1991·49 cites·22 claims
- 1687US5849424AHard coated copper alloys, process for production thereof and connector terminals made therefromDOWA MINING CO·Filed 1996·Granted Dec 15, 1998·57 cites·25 claims
- 1786US6912130B2Combined member of aluminum-ceramicsDOWA MINING CO·Filed 2003·Granted Jun 28, 2005·46 cites·16 claims
- 1886US6040067AHard coated copper alloysDOWA MINING CO·Filed 1997·Granted Mar 21, 2000·46 cites·6 claims
- 1984US5322575AProcess for production of copper base alloys and terminals using the sameDOWA MINING CO·Filed 1993·Granted Jun 21, 1994·35 cites·12 claims
- 2084US4789494AHydrothermal process for producing magnetoplumbitic ferriteDOWA MINING CO·Filed 1987·Granted Dec 6, 1988·26 cites·8 claims
- 2183US6835230B2Method for leaching zinc concentrateDOWA MINING CO·Filed 2002·Granted Dec 28, 2004·18 cites·23 claims
- 2283US6627011B2Process for producing connector copper alloysDOWA MINING CO·Filed 2001·Granted Sep 30, 2003·21 cites·13 claims
- 2383US5965193AProcess for preparing a ceramic electronic circuit board and process for preparing aluminum or aluminum alloy bonded ceramic materialDOWA MINING CO·Filed 1997·Granted Oct 12, 1999·68 cites·22 claims
- 2482US6475450B1Method of leaching zinc concentrateDOWA MINING CO·Filed 2000·Granted Nov 5, 2002·21 cites·10 claims
- 2581US7651785B2Tin-plated productDOWA MINING CO·Filed 2005·Granted Jan 26, 2010·4 cites·3 claims
- 2681US7348493B2Metal-ceramic circuit boardDOWA MINING CO·Filed 2001·Granted Mar 25, 2008·27 cites·17 claims
- 2781US6942742B2Copper-based alloy excellent in dezincing resistanceDOWA MINING CO·Filed 2003·Granted Sep 13, 2005·16 cites·4 claims
- 2881US6319485B1Magnetic material and production method thereofDOWA MINING CO·Filed 1999·Granted Nov 20, 2001·42 cites·2 claims
- 2978US6613450B2Metal/ceramic bonding articleDOWA MINING CO·Filed 2002·Granted Sep 2, 2003·30 cites·21 claims
- 3077US6354484B1Process for producing a metal-ceramic composite substrateDOWA MINING CO·Filed 2000·Granted Mar 12, 2002·13 cites·2 claims
- 3177US6077496APositive electrode active material for nonaqueous secondary cells and a process for producing said active materialDOWA MINING CO·Filed 1997·Granted Jun 20, 2000·47 cites·20 claims
- 3276US7256353B2Metal/ceramic bonding substrate and method for producing sameDOWA MINING CO·Filed 2003·Granted Aug 14, 2007·23 cites·10 claims
- 3376US6054762ASemiconductor substrates of high reliability ceramic metal compositesDOWA MINING CO·Filed 1997·Granted Apr 25, 2000·32 cites·13 claims
- 3476US4139456AProcess for oxidation treatment of FE2+ in waste waterDOWA MINING CO·Filed 1977·Granted Feb 13, 1979·50 cites·2 claims
- 3575US6908574B2Tin-containing indium oxides, a process for producing them, a coating solution using them and electrically conductive coatings formed of themDOWA MINING CO·Filed 2002·Granted Jun 21, 2005·15 cites·18 claims
- 3675US6620344B2Copper particle clusters and powder containing the same suitable as conductive filler of conductive pasteDOWA MINING CO·Filed 2000·Granted Sep 16, 2003·13 cites·2 claims
- 3775US6440545B1Powder for use in lower layer of coating type magnetic recording mediumDOWA MINING CO·Filed 2000·Granted Aug 27, 2002·11 cites·11 claims
- 3874US7514022B2Composite plated product and method for producing sameDOWA MINING CO·Filed 2005·Granted Apr 7, 2009·7 cites·12 claims
- 3974US7351372B2Copper base alloy and method for producing sameDOWA MINING CO·Filed 2003·Granted Apr 1, 2008·10 cites·6 claims
- 4074US6938333B2Method of manufacturing a metal-ceramic circuit boardDOWA MINING CO·Filed 2002·Granted Sep 6, 2005·16 cites·11 claims
- 4174US6918529B2Method for producing metal/ceramic bonding circuit boardDOWA MINING CO·Filed 2002·Granted Jul 19, 2005·21 cites·36 claims
- 4274US4120807AProcess for producing hexagonal-system ferrite powderDOWA MINING CO·Filed 1977·Granted Oct 17, 1978·17 cites·7 claims
- 4373US7256478B2Notched compound semiconductor waferDOWA MINING CO·Filed 2005·Granted Aug 14, 2007·4 cites·5 claims
- 4473US7090488B2Heat treatment furnaceDOWA MINING CO·Filed 2002·Granted Aug 15, 2006·22 cites·5 claims
- 4573US6949150B2Connector copper alloys and a process for producing the sameDOWA MINING CO·Filed 2002·Granted Sep 27, 2005·10 cites·15 claims
- 4673US6832606B2Wire saw and cutting method thereofDOWA MINING CO·Filed 2002·Granted Dec 21, 2004·17 cites·5 claims
- 4773US6399019B1Brazing material for use in joining a metal plate to a ceramic substrateDOWA MINING CO·Filed 2000·Granted Jun 4, 2002·7 cites·4 claims
- 4873US4241039AMethod of removal of arsenic from a sulfuric acid solutionDOWA MINING CO·Filed 1978·Granted Dec 23, 1980·26 cites·2 claims
- 4973US4226843AProcess and apparatus for production of spherical grain ferrite powderDOWA MINING CO·Filed 1979·Granted Oct 7, 1980·16 cites·17 claims
- 5072US7235119B2Copper particle clusters and powder containing the same suitable as conductive filler of conductive pasteDOWA MINING CO·Filed 2005·Granted Jun 26, 2007·2 cites·2 claims
Showing the top 50 of 236 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when DOWA MINING CO files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →