David E. Welsh — 23 Patents at Itt

David E. Welsh has been granted 23 US patents while listed as an inventor at Itt. The first was granted in 1989 and the most recent in January 2014. David E. Welsh ranks #178,160 of 4,157,543 US inventors in our database (top 4.3%). Patent records list David E. Welsh in Tustin, CA, US.

Issued Patents All Time

Showing 1–23 of 23 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
8639069	Wavelength dependent optical switch	Roger Helkey, John E. Bowers, Xuezhe Zheng, Robert Anderson, Olivier Jerphagnon	2014-01-28
6950215	Method and apparatus for monitoring optical switches	Walt Joseph Fant, Roger Helkey, Tony Walter, Peter Hunt	2005-09-27
6819824	Optical switch package	James R. Sechrist, John E. Bowers, Adrian John Keating, Xuezhe Zheng, David Henry Kinghorn +3 more	2004-11-16
6819815	Method and apparatus for indirect adjustment of optical switch reflectors	Charles M. Corbalis, John E. Bowers, Shifu Yuan, Roger Helkey	2004-11-16
6792177	Optical switch with internal monitoring	Roger Helkey, Adrian John Keating, Daniel J. Blumenthal, Walter Fant	2004-09-14
6681473	Method and apparatus for hermetically sealing fiber array blocks	Bin Liu, R. Kehl Sink, Yuanjian Xu	2004-01-27
6668108	Optical cross-connect switch with integrated optical signal tap	Roger Helkey, John E. Bowers, Tony Walter, Kevin S. Yamada	2003-12-23
6643425	Optical switch having switch mirror arrays controlled by scanning beams	John E. Bowers, Chandrasekhar Pusarla, Kevin White, Dan Blumenthal, Roger Helkey +1 more	2003-11-04
6032551	Balance weight and method of securing same to a rotatable tubular body	Oliver Lee Sims	2000-03-07	$17,212,000
5898807	Optic fiber connector	—	1999-04-27	$5,874,000
5778737	Balance weight and method of securing same to a rotatable tubular body	Oliver Lee Sims	1998-07-14	$33,826,000
5411418	Repairable solderless connector arrangement	Peter Joseph Hyzin	1995-05-02	$17,409,000
5373573	High density fiber optic connector	—	1994-12-13	$21,591,000
5181863	EMI shielding backshell system	—	1993-01-26	$7,329,000
5090911	Modular connector system	—	1992-02-25	$8,762,000
5088942	Closed entry socket contact assembly	David Rofer	1992-02-18	$30,873,000
5066250	Polarizing key permitting connector displacement	—	1991-11-19	$6,285,000
5046964	Hybrid connector	Piyapote Pisalyaput, William C. Gore	1991-09-10	$26,754,000
5015192	Contact retention and sealing system	Albert H. Wilson	1991-05-14	$30,510,000
4941847	Electrical connector contact retention system	—	1990-07-17	$12,555,000
4935847	Circuit system with jackscrew installation device	—	1990-06-19	$8,849,000
4812137	Connector with EMI/RFI grounding spring	Albert H. Wilson	1989-03-14	$11,854,000
4808118	Retention and ground plane connector clip	Albert H. Wilson	1989-02-28	$3,831,000

David E. Welsh — 23 Patents

Issued Patents All Time

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