Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Christopher A. Lacey — 14 Patents

PMPhase Metrics: 10 patents #1 of 49Top 3%
Eastman Kodak: 2 patents #3,607 of 8,114Top 45%
Willimantic, CT: #4 of 88 inventorsTop 5%
Connecticut: #3,210 of 34,797 inventorsTop 10%
Overall (All Time): #332,869 of 4,157,543Top 9%
14 Patents All Time
Christopher A. Lacey has been granted 14 US patents while listed as an inventor at Phase Metrics. The first was granted in 1989 and the most recent in July 2013. Christopher A. Lacey ranks #332,869 of 4,157,543 US inventors in our database (top 8.0%). Patent records list Christopher A. Lacey in Willimantic, CT, US.

Patents per Year

Patents granted per year, 1989 to 2013Bar chart with a peak of 4 patents in 1998.peak 41989: 2 patents19891994: 1 patents19941995: 1 patents19951996: 1 patents19961997: 3 patents19971998: 4 patents19982010: 1 patents20102013: 1 patents2013

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
8487609 Testing apparatus with read head holder having a gas jet pointing into a channel 2013-07-16
7715017 Dynamic fringe phase detection for measurement of very small spacing 2010-05-11
5808736 Thin film flying height calibration disk for calibrating flying height testers Kenneth H. Womack, Carlos Alberto Duran 1998-09-15
5805284 Optically verified glide 1998-09-08
5793480 Combined interferometer/ellipsometer for measuring small spacings Kenneth H. Womack, Carlos Alberto Duran, Ed Ross, Semyon Nodelman 1998-08-11
5777740 Combined interferometer/polarimeter Kenneth H. Womack 1998-07-07
5696653 Tooling for holding a head gimbal assembly 1997-12-09
5671048 Method and apparatus for rotary load/unload slider positioning 1997-09-23
5638178 Imaging polarimeter detector for measurement of small spacings Kenneth H. Womack 1997-06-10
5486924 Method and apparatus for measurement of roughness and hardness of a surface 1996-01-23
5457534 Method and apparatus to calibrate intensity and determine fringe order for interferometric measurement of small spacings Edward W. Ross 1995-10-10
5280340 Method and apparatus to calibrate intensity and determine fringe order for interferometric measurement of small spacings 1994-01-18
4888657 Contoured head assembly for use in a cassette loaded recorder George W. Brock 1989-12-19 $8,882,000
4875129 Inline magnetic head assembly for use in a cassette loaded recorder John M. Favrou, George W. Brock 1989-10-17 $5,609,000