Hiroshi Ejiri — 9 Patents at Petoca

Hiroshi Ejiri has been granted 9 US patents while listed as an inventor at Petoca. The first was granted in 1982 and the most recent in March 2003. Hiroshi Ejiri ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Hiroshi Ejiri in Kawagoe, JP.

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
6528036	Milled carbon fiber and process for producing the same	Yoshiyuki Nishimura	2003-03-04
6303095	Milled carbon fiber and process for producing the same	Yoshiyuki Nishimura	2001-10-16
6022518	Surface graphitized carbon material and process for producing the same	Yoshinori Yamazaki	2000-02-08
5792577	Negative electrode material for use in lithium-ion secondary battery and process for producing the same	Yoshinori Yamazaki, Hideyuki Nakajima, Yoshiyuki Nishimura	1998-08-11
5629062	Fiber reinforced plastic pipe and process for producing the same	Hideyuki Nakajima	1997-05-13
5356574	Process for producing pitch based activated carbon fibers and carbon fibers	Toshio Tamaki, Hideyuki Nakajima, Yoshiyuki Nishimura	1994-10-18
5303465	Method of assembling piston ring and method of assembling set oil ring and apparatus for assembling set oil ring	Shuzo Fujimoto, Yuji Tamai, Satoshi Takahashi, Naofumi Nagata	1994-04-19	$105,000
4934047	Assembly machine	Tsutomu Maruyama, Akio Ozeki	1990-06-19	$95,000
4354306	Machine tool having replaceable gang heads	Jinsei Ida, Kenzaburo Matsuo, Takeshi Ishibashi	1982-10-19	$2,133,000

Hiroshi Ejiri — 9 Patents

Issued Patents All Time

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