Keiichi Numata — 12 Patents at Nec

Keiichi Numata has been granted 12 US patents while listed as an inventor at Nec. The first was granted in 1988 and the most recent in November 2012. Keiichi Numata ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list Keiichi Numata in Tokyo, CT, JP.

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Showing 1–12 of 12 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
8318684	Antibiotics, bispolides A1, A2, and A3 as well as bispolides B1, B2a, B2b and B3 and processes for producing said antibiotics	Noriyuki Okujo, Siew Eim Khor, Lee Li Tan, Annie George, Szu Ting Ng +7 more	2012-11-27
7915946	Switch circuit for high frequency signals wherein distortion of the signals are suppressed	Yuji Takahashi	2011-03-29
7345521	High frequency switch circuit	Yuji Takahashi	2008-03-18
7298215	Amplifying circuit	Hitoshi Yano, Tomoyuki Yamase, Tadashi Maeda	2007-11-20
7180375	PLL circuit	Tadashi Maeda, Noriaki Matsuno	2007-02-20	$20,000
6987414	High frequency switch circuit	—	2006-01-17	$80,000
6201416	Field effect transistor logic circuit with reduced power consumption	—	2001-03-13	$48,000
5639735	Antitumor antibiotic compounds: hayumicins and analogs thereof	Rolf Menzel, Scott T. Taylor, Mitsuaki Tsunakawa, Tamotsu Furumai	1997-06-17	$443,024,000
5619146	Switching speed fluctuation detecting apparatus for logic circuit arrangement	Masahiro Fujii, Yasuo Ohno, Tadashi Maeda, Takao Atsumo, Noriaki Matsuno +1 more	1997-04-08	$23,000
5096884	Glidobactin PF-1 peptide antibiotics	Masahisa Oka	1992-03-17	$32,938,000
4789731	Semi-synthetic peptide antibiotics	Masahisa Oka, Masataka Konishi	1988-12-06	$17,149,000
4742047	Semi-synthetic peptide antibiotics	Masahisa Oka, Masataka Konishi	1988-05-03	$25,880,000

Keiichi Numata — 12 Patents

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