FiberChem Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5457056 Halohydrocarbon sensing chemistry with base modifierExpiredJul 06, 93Oct 10, 95[G01N]
5439647 Chip level waveguide sensorExpiredFeb 25, 94Aug 08, 95[G01N]
5253037 Optimal length for refractive index sensorsExpiredAug 04, 92Oct 12, 93[G01N, G02B]
5165005 Planar and other waveguide refractive index sensors using metal claddingExpiredJan 24, 91Nov 17, 92[G02B]
5116759 Reservoir chemical sensorsExpiredJun 27, 90May 26, 92[C12M, G01N]
5109442 Waterproof optical fiber chemical sensor and method of making sameExpiredMar 28, 90Apr 28, 92[H01J, G01N, G02B, A61B]
5107133 Reservoir chemical sensors with removable reservoir cellsExpiredAug 31, 90Apr 21, 92[G01N]
5094958 Method of self-compensating a fiber optic chemical sensorExpiredAug 30, 90Mar 10, 92[G01N]
5059790 Reservoir fiber optic chemical sensorsExpiredMar 30, 90Oct 22, 91[H01J]
5026139 Fiber optic refractive index sensor using metal claddingExpiredMar 28, 90Jun 25, 91[G02B]
4929049 Fiber optic refractive index sensor using a metal cladExpiredJan 29, 88May 29, 90[G02B]
4913519 Optical sensor for the detection of ice formation and other chemical speciesExpiredMar 04, 88Apr 03, 90[G02B]
4892383 Reservoir fiber optic chemical sensorsExpiredFeb 17, 89Jan 09, 90[H01J, G01N, G02B, A61B]
4846548 Fiber optic which is an inherent chemical sensorExpiredMay 06, 87Jul 11, 89[G02B]
4824206 Modular fiber optic chemical sensorExpiredNov 25, 87Apr 25, 89[G02B]

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