| POLATECHNO CO., LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120003402 | Retardation Film Produced by Using Cellulose Derivative - The present invention relates to a retardation film having biaxial characteristics or an achromatic property, which is obtained by uniaxially stretching of a film composed of cellulose derivatives in which a hydroxyl group of cellulose is substituted by an acyl group having 5 to 20 carbon atoms, preferably 7 to 20 carbon atoms, more preferably 8 to 20 carbon atoms or cross-linked compounds of cellulose derivatives, said retardation film is a superior retardation film which has negative birefringence and excellent optical characteristics and also can be easy to obtain by uniaxially stretching, and in addition, the heat resistance, tearing strength and the like which are weaknesses of cellulose ester are improved. | 01-05-2012 |
| 20110267691 | Azo Compound And Dye Polarizing Film Containing The Same - Disclosed is an azo compound represented by the formula (1) or (2) below, or a salt thereof. | 11-03-2011 |
| 20110199686 | Light Diffusion Cell For Laser Light, Light Source Device And Image Display Device Using Same - The present invention relates to a light diffusion cell for laser light where in a transparent cell in which a liquid can be sealed, a fine particle dispersion in which fine particles having an average particle size of 100 nm or more and 1.5 μm or less are colloidally dispersed in a liquid medium transmitting light, a same light diffusion cell comprising a reflection mechanism recursively using reflection light of incident light, a laser light source device comprising said light diffusion cell and a semiconductor laser light source and an image display device comprising said light diffusion cell or said laser light source device, and said light diffusion cell significantly reduce or remove speckle noise of semiconductor laser light. In addition, said light diffusion cell has an easy constitution, occupies a smaller volume and can be easily incorporated in any type of image display device using laser light. Therefore, it is possible to significantly reduce or remove speckle noise without large-sizing of an image display device using laser light or a higher cost-up. | 08-18-2011 |
| 20110164208 | Azo Compound And Salts Thereof, As Well As Dye-Based Polarization Films And Polarizing Plates Comprising The Same - Azo compounds represented by formula (1) (In the formula, R | 07-07-2011 |
| 20110089383 | Azo Compound And Dye Polarizing Film Containing The Same - Disclosed is an azo compound represented by the formula (1) below, a salt thereof, or a copper complex salt compound thereof. | 04-21-2011 |
| 20110075076 | Azo Compounds, And Dye-Based Polarizing Films And Polarizing Plates Comprising The Same - Azo compounds represented by formula (1) or (2) (In the formulas, A represents a phenyl group or naphthyl group that has at least 1 substituent. R | 03-31-2011 |
| 20110063546 | Azo Compound And Salt Thereof, And Dye-Containing Polarizing Film Comprising The Compound Or Salt - Disclosed is an azo compound represented by the general formula (1) or a salt thereof: | 03-17-2011 |
| 20110060134 | Azo Compound And Salt Thereof, And Dye-Containing Polarizing Film Comprising The Compound Or Salt - Disclosed is an azo compound represented by the general formula (1) or a salt thereof: | 03-10-2011 |
| 20100226008 | Azo Compound, And Dye-Containing Polarizing Film Comprising The Same - Disclosed is an azo compound represented by the formula (1) or (2) or a salt thereof. The azo compound or the salt thereof has an excellent light-polarizing property, and is extremely useful as a dichroic dye for use in a polarizing plate that shows less color leakage in a visible light range or a polarizing plate for a liquid crystal projector comprising the aforementioned polarizing plate. (1) (2) wherein R | 09-09-2010 |
| 20100167904 | POLARIZED GLASS AND METHOD FOR MANUFACTURING THE POLARIZED GLASS - Provided is a method for manufacturing polarized glass, comprising forming a glass preform by melting glass that includes metal ions and halogen ions and then depositing metal halide particles in the glass in which the metal ions and the halogen ions are dispersed; forming a glass sheet containing extended metal halide particles that are obtained by extending the metal halide particles by performing thermal drawing on the glass preform at a prescribed temperature; annealing by heating the glass sheet to a temperature that is no greater than a transformation temperature of the glass and no less than a distortion temperature of the glass; and reducing the extended metal halide particles in the glass sheet that has undergone said annealing into extended metal particles. The glass preform formed in said forming a glass preform has a haze between 0.3% and 1.3% with respect to light in a wavelength region passed by a G filter. | 07-01-2010 |
