Inventor
DEMAREST FRANK C
US17 patents
⚠️ This page may combine multiple inventors who share the name “DEMAREST FRANK C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ZYGO CORP
16 patentsUS6219144B1Apr 17, 2001
Apparatus and method for measuring the refractive index and optical path length effects of air using multiple-pass interferometry
ZYGO CORP86 citations98
US6529279B2Mar 4, 2003
Interferometer and method for measuring the refractive index and optical path length effects of air
ZYGO CORP43 citations96
US6525825B2Feb 25, 2003
Interferometer and method for measuring the refractive index and optical path length effects of air
ZYGO CORP47 citations96
US6327039B1Dec 4, 2001
Interferometer and method for measuring the refractive index and optical path length effects of air
ZYGO CORP73 citations96
US6597459B2Jul 22, 2003
Data age adjustments
ZYGO CORP19 citations92
US6525826B2Feb 25, 2003
Interferometer and method for measuring the refractive index and optical path length effects of air
ZYGO CORP22 citations92
US6407816B1Jun 18, 2002
Interferometer and method for measuring the refractive index and optical path length effects of air
ZYGO CORP32 citations92
US5767972AJun 16, 1998
Method and apparatus for providing data age compensation in an interferometer
ZYGO CORP27 citations92
US7428685B2Sep 23, 2008
Cyclic error compensation in interferometry systems
ZYGO CORP9 citations84
US7616322B2Nov 10, 2009
Cyclic error compensation in interferometry systems
ZYGO CORP9 citations83
US4427296AJan 24, 1984
Electro-optical measuring system
ZYGO CORP24 citations80
US6975406B2Dec 13, 2005
Glitch filter for distance measuring interferometry
ZYGO CORP11 citations73
US4332475AJun 1, 1982
Edge timing in an optical measuring apparatus
ZYGO CORP11 citations73
US9146093B2Sep 29, 2015
Non-harmonic cyclic error compensation in interferometric encoder systems
ZYGO CORP2 citations62
US7576868B2Aug 18, 2009
Cyclic error compensation in interferometry systems
ZYGO CORP2 citations62
US7542147B2Jun 2, 2009
Data age compensation with avalanche photodiode
ZYGO CORP5 citations62