Handa
Japan
10
2018-11-15
The entities that hold a legal rights for patent applications filed by inventor Ota Hiroki:
Hiroki Ota from Handa, JP has applied for patents for these inventions. The list has both pending applications and granted patents:
High-strength seamless steel pipe for oil country tubular goods and method of producing the same
#2 | 2018-08-30ELECTRIC RESISTANCE WELDED STAINLESS CLAD STEEL PIPE AND METHOD OF MANUFACTURING THE SAME
#3 | 2017-12-14Method for producing circumferential weld joint for low-carbon martensitic stainless steel pipes
#4 | 2017-12-07High-strength seamless steel pipe for oil country tubular goods and method of producing the same
#5 | 2017-12-07High-strength seamless steel pipe for oil country tubular goods and method of producing the same
#6 | 2017-03-16Ferritic stainless steel
#7 | 2017-03-16Ferritic stainless steel
#8 | 2015-08-06FERRITIC STAINLESS STEEL
#9 | 2015-01-22FERRITIC STAINLESS STEEL
#10 | 2015-01-08Ferritic stainless steel foil
1029059 ⎘