| Patent Number |
Title Of Patent |
Date Issued |
| 7417785 |
Methods and circuits for distributing power to SPD loads |
August 26, 2008 |
| Methods and circuits for distributing power to suspended-particle-device (SPD) film products including SPD windows, SPD shades, and other SPD products, which are referred to generally as SPD loads. A driving voltage derived from a primary power source is provided to an SPD load by ba |
| 7361252 |
Methods for laminating films for SPD light valves and SPD light valves incorporating such lamina |
April 22, 2008 |
| The invention is directed to a method for laminating a suspended particle device (SPD) film which comprises forming a suspended particle device film; positioning the suspended particle device film within an unlaminated stack of components for forming a laminated suspended particle de |
| 6987602 |
Anisometrically shaped carbon and/or graphite particles, liquid suspensions and films thereof an |
January 17, 2006 |
| The invention contemplates anisometrically shaped carbon-containing particles for use as the particles of a liquid light valve suspension, films and light valves. The anisometric carbon-containing particles are crystalline or amorphous particles and can have various geometrical shape |
| 6936193 |
Suspended particle device light valve film |
August 30, 2005 |
| A film suitable for use as a light-modulating unit of a suspended particle device light valve, comprising a plurality of particles dispersed in a liquid suspending medium, distributed within an optionally crosslinked matrix polymer. The suspending medium is substantially immiscible with |
| 6900923 |
Siloxane matrix polymers and SPD light valve films incorporating same |
May 31, 2005 |
| A film suitable for use as a light-modulating unit of a suspended particle device (SPD) light valve. The film comprises a siloxane matrix polymer which has a refractive index>1.4630 and has droplets of a liquid light valve suspension distributed within the matrix. The liquid light val |
| 6897997 |
Method and device for controlling voltage provided to a suspended particle device |
May 24, 2005 |
| A voltage controlling device includes an AC terminal receiving an AC voltage signal, a voltage dividing device adapted to divide the AC voltage signal into a plurality of distinct voltage signals within a predetermined range, a controller adapted to control the voltage dividing device to |
| 6804040 |
Method and device for controlling voltage provided to a suspended particle device |
October 12, 2004 |
| A voltage controlling device includes an AC terminal receiving an AC voltage signal, a voltage dividing device adapted to divide the AC voltage signal into a plurality of distinct voltage signals within a predetermined range, a controller adapted to control the voltage dividing device to |
| 6606185 |
SPD films and light valves comprising liquid suspensions of heat-reflective particles of mixed m |
August 12, 2003 |
| An electro-optical device including a cell formed of opposed cell walls, a light modulating unit comprising a suspension containing anisometrically-shaped particles formed of a heat-reflective mixed metal oxide, e.g., bismuth manganese oxide, suspended in a liquid suspending medium b |
| 6529312 |
Anisometrically shaped carbon and/or graphite particles, liquid suspensions and films thereof an |
March 4, 2003 |
| The invention contemplates anisometrically shaped carbon-containing particles for use as the particles of a liquid light valve suspension, films and light valves. The anisometric carbon-containing particles are crystalline or amorphous particles and can have various geometrical shapes |
| 6522446 |
Anisometrically shaped metal particles, liquid suspensions and films thereof and light valves co |
February 18, 2003 |
| The invention is directed to the use of anisometrically shaped metal particles in liquid light valve suspensions, light valve films and light valves. The anisometric metal particles may have various geometric shapes including, for example, fibrils, and an average length in the range |
| 6517746 |
Polyhalide particles and light valves comprising same |
February 11, 2003 |
| A polyhalide light-polarizing material comprising a complex obtained by reacting: (a) elemental iodine; (b) a hydrohalide acid or an ammonium halide, alkali metal halide or alkaline earth metal halide; (c) a first compound capable of chelating hydrogen, ammonium or metal ions; and (d) a |
| 6429961 |
Methods for retrofitting windows with switchable and non-switchable window enhancements |
August 6, 2002 |
| A method for retrofitting a window by combining the window with a switchable or non-switchable window enhancement. The method includes providing a window comprising at least one relatively transparent viewing pane with first and second opposed viewing surfaces, and optionally a frame |
| 6416827 |
SPD films and light valves comprising same |
July 9, 2002 |
| A film suitable for use as the light-modulating unit of an SPD light valve, the film comprising a cross-linked polymer matrix and having droplets of a liquid light valve suspension distributed in the cross-linked polymer matrix, the liquid light valve suspension comprising particles susp |
| 6301040 |
SPD films having improved properties and light valves comprising same |
October 9, 2001 |
| A film suitable for use as the light-modulating unit of a light valve, is disclosed. The film comprises a cross-linked polymer matrix having droplets of a liquid light valve suspension distributed in the cross-linked polymer matrix. The polymer matrix, prior to cross-linking, compris |
| 6271956 |
Method and materials for enhancing the adhesion of SPD films, and light valves comprising same |
August 7, 2001 |
| An improved method for adhering an SPD film to a substrate of a light valve is disclosed. The method comprises the steps of coating either the film or the substrate or both the film and the substrate with an adhesive, placing the film and substrate into contact and adhering the film and |
| 6156239 |
Light polarizing materials, liquid suspensions and films thereof, and light valves incorporating |
December 5, 2000 |
| Polyhalide light-polarizing particles prepared by the process comprising reacting in a suitable liquid (i) elemental molecular iodine, (ii) an inorganic halide, with (iii) a substantially rigid polycyclic precursor compound, wherein:a. the polycyclic precursor compound has two cyclic str |
| 6114405 |
Ultraviolet radiation-curable light-modulating film for a light valve, and method of making same |
September 5, 2000 |
| A method for preparing a film suitable for use as the light-modulating unit of an SPD light valve, which film comprises a cross-linked polymer matrix having droplets of a liquid light valve suspension distributed in the cross-linked polymer matrix. The light valve suspension comprises |
| 5650872 |
Light valve containing ultrafine particles |
July 22, 1997 |
| An electro-optical device, such as a light valve, has a cell formed of opposed cell walls, a light-modulating unit comprising a suspension containing anisometric particles suspended in a liquid suspending medium between the cell walls, and opposed electrodes operatively associated with |
| 5516463 |
Method of making light-polarizing particles |
May 14, 1996 |
| A method of making crystals of a light-polarizing material useful in a liquid light valve suspension with the addition of controlled amounts of water relative to the amount of reactants used in making the particles of the light-polarizing material. |
| 5467217 |
Light valve suspensions and films containing UV absorbers and light valves containing the same |
November 14, 1995 |
| Light valve suspensions and light valve films are provided with a UV absorber. |
| 5463492 |
Light modulating film of improved clarity for a light valve |
October 31, 1995 |
| A film suitable for use as the light modulating unit of a light valve comprises a cross-linked polymer matrix having droplets of a liquid light valve suspension distributed in the cross-linked polymer matrix, and a light valve comprising such a film. |
| 5463491 |
Light valve employing a film comprising an encapsulated liquid suspension, and method of making |
October 31, 1995 |
| A film suitable for use as the light modulating unit of a light valve comprises a cross-linked polymer matrix having droplets of a liquid light valve suspension distributed in the cross-linked polymer matrix, and a light valve comprising such a film. |
| 5325220 |
Light valve with low emissivity coating as electrode |
June 28, 1994 |
| A light valve has opposed, spaced apart cell walls, each cell wall carrying an electrode thereon for application of an electrical field to the light valve, at least one of the electrodes comprising a low-emissivity, electrically conductive material. |
| 5279773 |
Light valve incorporating a suspension stabilized with a block polymer |
January 18, 1994 |
| A light valve comprises a suspension of particles in a liquid suspending medium that also contains an A-B type block polymer. |
| 5130057 |
Light polarizing materials and suspensions thereof |
July 14, 1992 |
| Light-polarizing materials, comprising a complex obtained by reacting elemental iodine, and iodide unsubstituted or monoalkyl- or dialkyl-substituted 2,5-dicarboxy-pyrazine and uses thereof in liquid suspensions, set suspensions and light valves. |
| 5111331 |
Electro-optical light modulator |
May 5, 1992 |
| A carrier light beam transmitted through a light valve is modulated to convey information along a communications system. The modulation factor, baud rate and efficiency of the light valve can be increased by directing a modulated light beam a number of times through the valve. |
| 5093041 |
Light-polarizing material based on ethylenediamine polyacetic acid derivatives |
March 3, 1992 |
| Light-polarizing materials, and uses thereof in liquid suspensions, set suspensions and light valves. |
| 5002701 |
Light polarizing materials and suspensions thereof |
March 26, 1991 |
| Light-polarizing materials comprising a complex obtained by reacting elemental iodine, and iodide and a monoalkyl- or dialkyl-piperazinedione or an unsubstituted or monoalkyl- or dialkyl- substituted 2,5-dicarboxy-pyrazine, and uses thereof in liquid suspensions, set suspensions and |
| 4877313 |
Light-polarizing materials and suspensions thereof |
October 31, 1989 |
| Light-polarizing materials, and uses thereof in liquid suspensions, set suspensions and light valves. |
| 4772103 |
Light valve containing an improved suspension, and liquids therefor |
September 20, 1988 |
| In a light valve, comprising a cell containing a suspension of small anisometrically shaped particles suspended in an electrically resistive liquid suspending medium, said liquid suspending medium having a polymer dissolved therein and bonded to or associated with said particles, the |
| 4422963 |
Light valve polarizing materials and suspensions thereof |
December 27, 1983 |
| A light-polarizing perhalide of an alkaloid acid salt having incorporated in its molecular structure a chloride, bromide, or iodide of calcium, rubidium, cesium or bismuth, and a light valve containing a suspension of particles of such perhalide. |
| 4407565 |
Light valve suspension containing fluorocarbon liquid |
October 4, 1983 |
| In a light valve, comprising a cell containing a suspension of particles in a liquid suspending medium, the improvement wherein said light valve suspension comprises particles of a perhalide of an alkaloid acid salt or a light-polarizing metal halide or perhalide suspended in said liquid |
| 4273422 |
Light valve containing liquid suspension including polymer stabilizing system |
June 16, 1981 |
| A light valve for controlling the transmission of radiation, which comprises a cell and a liquid suspension in said cell; said liquid suspension comprising:an electrically resistive liquid suspending medium;a plurality of small, anisometrically shaped particles suspended in said suspendi |
| 4270841 |
Light valve containing suspension of perhalide of alkaloid acid salt |
June 2, 1981 |
| A light valve comprises a cell containing a suspension of light-polarizing particles in a liquid suspending medium, the light polarizing particles being particles of a light-polarizing perhalide of a polycarboxylic acid salt of an alkaloid. |
| 4247175 |
Light valve containing improved light valve suspension |
January 27, 1981 |
| In a light valve comprising a liquid suspension of small particles selected from the group consisting of halogenated alkaloid acid salts and metal halides in a liquid suspending medium, the improvement in which said liquid suspending medium comprises a liquid, saturated, aliphatic ha |
| 4164365 |
Light valve for controlling the transmission of radiation comprising a cell and a stabilized liq |
August 14, 1979 |
| Polymeric materials which are used to stabilize particles including colloidal size particles, particularly particles which polarize light or other radiation and include halogen in their composition. The materials are long chain molecular copolymers having available functional groups |
| 4131334 |
Light polarizing materials, suspensions thereof, and process for manufacturing such suspensions |
December 26, 1978 |
| An aliphatically unsaturated organic compound is hydrogenated to form a saturated compound and a salt of the saturated compound is reacted with a halogen and a halide to form a light-polarizing material. The light-polarizing material in the form of crystalline particles is dispersed |
| 4113362 |
Light valve, light valve suspension materials and suspension therefor |
September 12, 1978 |
| A light valve including suspending materials which have an ability to prevent or substantially retard agglomeration of the particles in suspension during the application of a voltage to the suspension. The materials include aromatic esters which are derivable from aromatic alcohols, |
| 4078856 |
Light valve |
March 14, 1978 |
| A light valve and fluid suspension therefor which when activated decrease the transmission of radiation therethrough. |
| 4025163 |
Light valve, light valve suspension materials and suspension therefor |
May 24, 1977 |
| A light valve including suspending materials which have an ability to prevent or substantially retard agglomeration of the particles in suspension during the application of a voltage to the suspension. The materials comprise aromatic esters which are derivable from aromatic alcohols, |
