Joseph A. Check III

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Massapequa, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Light modulating film of improved UV stability for a light valve
- Patent number 5,728,251
- Issue date Mar 17, 1998
- Joseph A. Check
- G02 - OPTICS
Information Patent Grant
Method of making light-polarizing particles
- Patent number 5,516,463
- Issue date May 14, 1996
- Research Frontiers Incorporated
- Joseph A. Check
- G02 - OPTICS
Information Patent Grant
Light valve suspensions and films containing UV absorbers and light...
- Patent number 5,467,217
- Issue date Nov 14, 1995
- Research Frontiers Incorporated
- Joseph A. Check
- G02 - OPTICS
Information Patent Grant
Light modulating film of improved clarity for a light valve
- Patent number 5,463,492
- Issue date Oct 31, 1995
- Research Frontiers Incorporated
- Joseph A. Check
- B32 - LAYERED PRODUCTS
Information Patent Grant
Light valve employing a film comprising an encapsulated liquid susp...
- Patent number 5,463,491
- Issue date Oct 31, 1995
- Research Frontiers Incorporated
- Joseph A. Check
- B32 - LAYERED PRODUCTS
Information Patent Grant
Light valve suspensions containing a trimellitate or trimesate and...
- Patent number 5,461,506
- Issue date Oct 24, 1995
- Research Frontiers Inc.
- Joseph A. Check
- G02 - OPTICS
Information Patent Grant
Light-polarizing material based on ethylenediamine polyacetic acid...
- Patent number 5,093,041
- Issue date Mar 3, 1992
- Research Frontiers Incorporated
- Joseph A. Check
- C07 - ORGANIC CHEMISTRY