QT Optoelectronics

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Records under this name other than patents QT Optoelectronics holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.

Showing 1 to 8 of 8 · Back to QT Optoelectronics

Patent	Title	Status	Expires	Confidence
US 4,271,365	Optocoupler having improved isolation Term ended Term ended no later than Jun 2, 2001 · Low confidence	Term ended	Term ended no later than Jun 2, 2001	Low confidence
US 4,445,043	Method of making an optocoupler Term ended Term ended no later than Apr 24, 2004 · Low confidence	Term ended	Term ended no later than Apr 24, 2004	Low confidence
US 4,446,375	Optocoupler having folded lead frame construction Term ended Term ended no later than May 1, 2004 · Low confidence	Term ended	Term ended no later than May 1, 2004	Low confidence
US 4,450,461	Low cost high isolation voltage optocoupler with improved light transmissivity Term ended Term ended no later than May 22, 2004 · Low confidence	Term ended	Term ended no later than May 22, 2004	Low confidence
US 4,633,582	Method for assembling an optoisolator and leadframe therefor Term ended Term ended no later than Jan 6, 2007 · Low confidence	Term ended	Term ended no later than Jan 6, 2007	Low confidence
US 4,634,861	Rotary switch with reflector coded actuator drum Formerly held Term ended Term ended no later than Jan 6, 2007 · Low confidence	Term ended	Term ended no later than Jan 6, 2007	Low confidence
US 4,753,520	Compound catoptric cartesian ovoid lens Term ended Term ended no later than Jun 28, 2008 · Low confidence	Term ended	Term ended no later than Jun 28, 2008	Low confidence
US 4,869,580	Immersion cartesian ovoid lens Term ended Term ended no later than Sep 26, 2009 · Low confidence	Term ended	Term ended no later than Sep 26, 2009	Low confidence