Leon C. Vandervalk — 18 Patents at Defelsko

Leon C. Vandervalk has been granted 18 US patents while listed as an inventor at Defelsko. The first was granted in 1994 and the most recent in December 2019. Leon C. Vandervalk ranks #245,716 of 4,157,543 US inventors in our database (top 5.9%). Patent records list Leon C. Vandervalk in Brockville, ON, CA.

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #	Title	Co-Inventors	Date
10514328	Method and system for testing surfaces for contaminants	Steven Nowell, Nicholas Williams	2019-12-24
9207174	Apparatus and method for characterizing a replica tape	Robert V. Stachnik, James E. Davis	2015-12-08
9188672	Ultrasonic measuring gauge	—	2015-11-17
8994933	Apparatus and method for characterizing a replica tape	Robert V. Stachnik, James E. Davis	2015-03-31
RE41342	Coating thickness gauge	Frank Koch, David Beamish	2010-05-18
6343510	Ultrasonic testing using synthetic impulses	Ian Neeson, Andre D. Chevrier	2002-02-05
6282962	High resolution ultrasonic thickness gauge	Frank Koch, David Beamish	2001-09-04
6250160	High resolution ultrasonic thickness gauge	Frank Koch, David Beamish	2001-06-26
6122968	Delay line for an ultrasonic probe and method of using same	—	2000-09-26
5979241	Delay line for an ultrasonic probe and method of using same	—	1999-11-09
5930744	Coating thickness gauge	Frank Koch, David Beamish	1999-07-27
5777230	Delay line for an ultrasonic probe and method of using same	—	1998-07-07
5723791	High resolution ultrasonic coating thickness gauge	Frank Koch, David Beamish	1998-03-03
RE35703	Combination coating thickness gauge using a magnetic flux density sensor and an eddy current search coil	Frank Koch, David Beamish	1997-12-30
5686831	Gauge with reversible display screen	—	1997-11-11
5623427	Nondestructive anodic capacity gauge	Frank Koch	1997-04-22
5343146	Combination coating thickness gauge using a magnetic flux density sensor and an eddy current search coil	Frank Koch, David Beamish	1994-08-30
5325430	Encryption apparatus for computer device	Brian J. Smyth	1994-06-28

Leon C. Vandervalk — 18 Patents

Issued Patents All Time

Patent Widget