Sanda
Japan
23
2015-10-29
The entities that hold a legal rights for patent applications filed by inventor KONDO Kunio:
Kunio KONDO from Sanda, JP has applied for patents for these inventions. The list has both pending applications and granted patents:
Stainless steel for oil well, stainless steel pipe for oil well, and method of manufacturing stainless steel for oil well
#2 | 2012-12-27High-strength stainless steel for oil well and high-strength stainless steel pipe for oil well
#3 | 2012-10-25Method for manufacturing seamless steel pipe for line pipe and seamless steel pipe for line pipe
#4 | 2012-05-17Method of manufacturing heavy-wall seamless steel pipe
#5 | 2012-02-23Method for manufacturing seamless pipes
#6 | 2012-02-09Stainless steel for oil well, stainless steel pipe for oil well, and method of manufacturing stainless steel for oil well
#7 | 2011-09-22High-strength stainless steel pipe excellent in sulfide stress cracking resistance and high-temperature carbonic-acid gas corrosion resistance
#8 | 2011-08-04Method for producing steel pipe with excellent expandability
#9 | 2010-03-18STEEL PIPE WITH EXCELLENT EXPANDABILITY AND METHOD FOR PRODUCING THE SAME
#10 | 2010-02-16Martensitic stainless steel and method for manufacturing same
#11 | 2009-06-11Induction hardened hollow driving shaft
#12 | 2009-05-07Seamless steel pipe for line pipe and a process for its manufacture
#13 | 2008-10-23Seamless steel pipe and manufacturing method thereof
#14 | 2008-09-11Seamless steel pipe for line pipe and a process for its manufacture
#15 | 2008-09-11Method for manufacturing seamless steel pipe for line pipe
#16 | 2007-08-30Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe
#17 | 2007-06-05Steel pipe for embedding-expanding, and method of embedding-expanding oil well steel pipe
#18 | 2006-09-14Welded structure having improved resistance to stress corrosion cracking
#19 | 2006-08-10Martensitic stainless steel
#20 | 2006-06-22Steel pipe for an airbag system
#21 | 2005-12-15Martensitic stainless steel
#22 | 2005-08-04High strength seamless steel pipe excellent in hydrogen-induced cracking resistance
#23 | 2005-02-17Martensitic stainless steel
3424645 ⎘