Robert W. Walden — 14 Patents at AT&T

Robert W. Walden has been granted 14 US patents while listed as an inventor at AT&T. The first was granted in 1991 and the most recent in November 2010. Robert W. Walden ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list Robert W. Walden in Madison, NJ, US.

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
7834634	Low-power switch state detection circuit and method and mobile telephone incorporating the same	David Glen Martin, Richard Verney	2010-11-16
7702119	Multi-input gain control circuit	—	2010-04-20
6614294	Filter to remove noise coupling into a sensitive circuit node	—	2003-09-02
6539524	Method and apparatus for matching capacitance of filters having different circuit topologies	—	2003-03-25
6310520	High slew-rate operational amplifier architecture	—	2001-10-30	$8,931,000
6271733	Integrated oscillator circuit with a memory based frequency control circuit and associated methods	Ignacio Herrera Alzu, Rogelio Peon, Maarten Visee	2001-08-07	$7,950,000
6166592	Linear CMOS transconductor with rail-to-rail compliance	—	2000-12-26	$28,470,000
6150872	CMOS bandgap voltage reference	Bruce W. McNeill	2000-11-21	$36,257,000
6049236	Divide-by-one or divide-by-two qualified clock driver with glitch-free transitions between operating frequencies	—	2000-04-11	$67,246,000
5896044	Universal logic level shifting circuit and method	—	1999-04-20	$122,398,000
5841382	Fast testing of D/A converters	Ramin Khoini-Poorfard, William Edward Burchanowski	1998-11-24	$54,688,000
5530442	Circuit and method for testing a dithered analog-to-digital converter	Steven R. Norsworthy, David Rich	1996-06-25
5416432	Median peak detector for controlling disk pickup head	Stephen H. Lewis, Krishnaswamy Nagaraj	1995-05-16
5030926	Voltage controlled balanced crystal oscillator circuit	—	1991-07-09

Robert W. Walden — 14 Patents

Issued Patents All Time

Patent Widget