Sfa, Inc.
Records under this name other than patents Sfa, Inc. holds now: patents now held by others, patents whose terms have ended, and its applications, pending or abandoned.
| Patent | Title | Status | Expires | Confidence |
|---|---|---|---|---|
| US 4,666,255 | Method and apparatus for acousto-optically shifting the frequency of a light signal propagating in a single-mode fiber Term ended Term ended no later than May 19, 2007 · Low confidence | Term ended | Term ended no later than May 19, 2007 | Low confidence |
| US 4,673,244 | Method of aligning a polarization-preserving optical fiber with a semiconductor laser for attachment of the fiber to the laser Term ended Term ended no later than Jun 16, 2007 · Low confidence | Term ended | Term ended no later than Jun 16, 2007 | Low confidence |
| US 4,874,244 | Method and apparatus for increasing the unambiguous sensing range in an interferometric fiber gyroscope Term ended Term ended no later than Oct 17, 2009 · Low confidence | Term ended | Term ended no later than Oct 17, 2009 | Low confidence |
| US 5,007,980 | Liquid encapsulated zone melting crystal growth method and apparatus Term ended Term ended no later than Apr 16, 2011 · Low confidence | Term ended | Term ended no later than Apr 16, 2011 | Low confidence |
| US 5,057,287 | Liquid encapsulated zone melting crystal growth method and apparatus Term ended Term ended no later than Oct 15, 2011 · Low confidence | Term ended | Term ended no later than Oct 15, 2011 | Low confidence |
| US 5,058,980 | Multimode optical fiber interconnect for pumping Nd:YAG rod with semiconductor lasers Term ended Term ended no later than Oct 22, 2011 · Low confidence | Term ended | Term ended no later than Oct 22, 2011 | Low confidence |
| US 5,120,704 | Method of making Tl-Sr-Ca-Cu-oxide superconductors comprising heating at elevated pressures in a sealed container Formerly held Term ended Term ended no later than Jun 9, 2012 · Low confidence | Term ended | Term ended no later than Jun 9, 2012 | Low confidence |
| US 5,158,933 | Phase separated composite materials Formerly held Term ended Term ended no later than Oct 27, 2012 · Low confidence | Term ended | Term ended no later than Oct 27, 2012 | Low confidence |
| US 5,177,644 | Tilt mechanism Formerly held Term ended Term ended no later than Jan 5, 2013 · Low confidence | Term ended | Term ended no later than Jan 5, 2013 | Low confidence |
| US 5,183,779 | Method for doping GaAs with high vapor pressure elements Formerly held Term ended Term ended no later than Feb 2, 2013 · Low confidence | Term ended | Term ended no later than Feb 2, 2013 | Low confidence |