Kobe
Japan
15
2016-05-12
The entities that hold a legal rights for patent applications filed by inventor Sakamoto Koichi:
Koichi Sakamoto from Kobe, JP has applied for patents for these inventions. The list has both pending applications and granted patents:
Si-killed steel wire rod and spring
#2 | 2015-04-30High cleanliness spring steel and high cleanliness spring excellent in fatigue properties
#3 | 2015-02-19Flux composition and brazing sheet
#4 | 2011-09-22Steel for machine and structural use having excellent machinability
#5 | 2010-08-05Steel for machine and structural use having excellent machinability and process for producing the same
#6 | 2010-04-29Low carbon resulfurized free-machining steel having high machinability
#7 | 2010-04-22Si-killed steel wire rod and spring excellent in fatigue properties
#8 | 2010-04-08Steel for high-cleanliness spring with excellent fatigue characteristics and high-cleanliness spring
#9 | 2010-02-04Si-killed steel wire rod and spring
#10 | 2009-08-06High cleanliness spring steel and high cleanliness spring excellent in fatigue properties
#11 | 2009-05-21Spring steel and spring superior in fatigue properties
#12 | 2008-08-28Method for producing high cleanness steel excellent in fatigue strength or cold workability
#13 | 2007-03-01Low carbon composite free-cutting steel product excellent in roughness of finished surface and method for production thereof
#14 | 2006-07-20Method for producing high cleanliness steel excellent in fatigue strength or cold workability
#15 | 2006-05-25Ultra clean spring steel
6136768 ⎘