Bizarre Patents
A self defense weapon formed as a memo pad and which is easily held by a person's fingers, therefore making it possible to provide protection from a mugger and also to quickly and easily write a record or a message without failure of missing or forgetting significant information under a stressful situation.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7108897 | Dye type polarizing plate This invention relates to a polyvinyl alcohol type polarizing film or plate which comprises a water-soluble dye having the formula (1) in a free acid form or a copper complex salt thereof. The said polarizing plate has excellent polarizing performance capability and... | 09/19/2006 |
| 7078497 | Disazo dyes, and copper complexes thereof, for dyeing paper The dyes of formula (1) according to claim 1 and the copper complexes of dyes of formula (2) according to claim 9 or the mixtures of mono-copper complex with the bis-copper complex are excellently suitable for dyeing paper with good light-fastness prop... | 07/18/2006 |
| 7074299 | Process for using a phloroglucinol color delta to control blending, deinking and bleaching of groundwood-containing secondary pulp A method of processing papermaking fiber includes characterizing the initial color of the pulp and the color of the pulp after treatment with a phloroglucinol stain. The color response of the pulp to the stain has been found to be a better indicator of processing ne... | 07/11/2006 |
| 7056374 | Aqueous ink composition, water-soluble dye composition and ink-jet recording method An aqueous ink composition which comprises a compound represented by the formula (1) or the salt thereof: (1) wherein R1 and R2 independently represent a hydrogen atom, an alkyl group, an alkoxy group, an alkanoylamino group, an alkoxyalkoxy gr... | 06/06/2006 |
| 6974593 | Insoluble drug delivery Particles of water insoluble biologically active compounds, particularly water-insoluble drugs, with an average size of 100 nm to about 300 nm, are prepared by dissolving the compound in a solution then spraying the solution into compressed gaz, liquid or supercriti... | 12/13/2005 |
| 6861106 | Dichroic dye, composition thereof, and liquid crystal composition and liquid crystal display element containing the same Dichroic dyes, dichroic dye compositions, and liquid crystal composition and liquid crystal display element containing the dichroic dyes. The dichroic dye has increased solubility and stability. ... | 03/01/2005 |
| 6790490 | Dye type polarizing plate This invention relates to a polyvinyl alcohol type polarizing film or plate which comprises a water-soluble dye having the formula (1) in a free acid form or a copper complex salt thereof. The said polarizing plate has excellent polarizing performance capability and... | 09/14/2004 |
| 6464768 | Water-soluble stilbene dyes, their preparation and use The invention relates to a dye ##STR1## in which R1 is hydrogen, alkyl of 1 to 4 carbon atoms, or alkoxy of 1 to 4 carbon atoms; R2 is hydrogen, carboxyl, chloro or nitro; R21 is hydrogen; or R2 and R21 to... | 10/15/2002 |
| 6448384 | Bisazo compound and electrophotographic photoconductor using the same An electrophotographic photoconductor has an electroconductive support, and a photoconductive layer formed thereon which contains at least one bisazo compound of formula (I): ##STR1## wherein Cp1 and Cp2 are each a coupler radical wh... | 09/10/2002 |
| 6365719 | Bridged disazo compounds Compounds of formula (I) ##STR1## with the meanings of D, R1, R2, X and Y as given in claim 1 can be used as paper dyes or direct dyes or for the preparation of ink-jet inks.... | 04/02/2002 |
| 6140477 | Near-infrared ray absorbing polyazo compound A polyazo compound capable of effectively absorbing near-infrared rays, which can be produced from readily available raw materials is provided, which comprises at least one --OH group or at least one group derived from --OH group at p-position of the azo ... | 10/31/2000 |
| 6114512 | Oligomeric azo dyes Oligomeric azo dyes having an alternating construction made up of diazo components and coupling components, containing in the molecule at least 3 units of the structure I --[D--K]-- (I) where D is a tetrazo compo... | 09/05/2000 |
| 6036760 | Use of aqueous liquid dye concentrates comprising a disazo dye in the inkjet process and also disazo dyes Aqueous liquid dye concentrates comprising, based on the weight of the concentrate, from 15 to 35% by weight of a dye quantity, from 90 to 100% by weight of the dye quantity consisting of the dye of the formula ##STR1## where Kat.sym. is the equivale... | 03/14/2000 |
| 6005085 | Condensed azo compounds and process for preparing the same The present invention provides novel condensed azo compounds using bisamide compounds of 2-hydroxynaphthalene-3,6-dicarboxylic acid, amide, or ester as the couplers, which have excellent properties such as excellent water resistance, chemical resistance, ... | 12/21/1999 |
| 5965715 | Bisazo compounds and process for the preparation thereof The invention provides novel bisazo compounds which is obtained by coupling two molecules of a 2-hydroxynaphthalene-3,6-dicarboxylic acid derivative and a compound having two diazo groups in its molecule, as well as a process for producing the same. The p... | 10/12/1999 |
| 5952477 | Azo compound and polarizing film The present invention is concerned with a novel azo compound represented by formula (1), (2) or (3), a water-soluble dye comprising this azo compound, and a polarizing film containing this azo compound. The obtained polarizing film has high hydrothermores... | 09/14/1999 |
| 5891227 | Aqueous dye preparations Aqueous dye preparations useful for producing inks for the inkjet process or writing inks or for producing aqueous alcoholic coating or printing colors comprise, based on the weight of the preparation, from 0.1 to 15% by weight of a dye quantity comprisin... | 04/06/1999 |
| 5883233 | Paper dye This invention relates to a dye having the formula (I) ##STR1## wherein each M is a hydrogen ion, an alkali metal ion, or Ra Rb Rc Rd N+ (where Ra, Rb, Rc and Rd... | 03/16/1999 |
| 5739298 | Water-soluble azo compounds Novel azo compounds having the specific structural formula (1) or (3) set out below, water-soluble dyes containing the compounds, and polarizing films containing the water-soluble dyes: ##STR1## wherein R1 represents a hydrogen or halogen ... | 04/14/1998 |
| 5646257 | Azodyestuffs, their preparation and their use The new dyestuffs of the formula (I) ##STR1## wherein the substituents R and R1 and the index n have the meaning given in the description, are outstandingly suitable for dyeing and printing cellulose-containing materials, in particular for... | 07/08/1997 |
| 5623062 | Bisazo compounds as charge generating materials An electrophotographic photoconductor is disclosed, which comprises an electroconductive support and a photoconductive layer formed thereon comprising a bisazo pigment having the formula (I) serving as a charge generating material: ##STR1## wher... | 04/22/1997 |
| 5569749 | Organic photoconductive material and a photosensitive material for electronic photography using it An organic photoconductive material is represented by the following general formula [1]: A1 --N.dbd.N--B--N.dbd.N--A2 [1], wherein B is a divalent organic group bonded to nitrogen atoms forming azo groups, A1 | 10/29/1996 |
| 5536818 | Dichroic azo dye, liquid crystal composition containing the same, and liquid crystal element using the composition A dichroic dye represented by the formula (I) or (II): ##STR1## wherein the substituents are as described in the specification. The dichroic dyes (I) and (II) exhibit excellent dichroism and can be prepared from 2,2'-ditrifluoromethylbenzidine having... | 07/16/1996 |
| 5506346 | Organic photoconductive material and a photosensitive material for electronic photography using it An organic photoconductive material is represented by the following general formula [1]: A1 -N.dbd.N-B-N.dbd.N-A2 [1], wherein B is a divalent organic group bonded to nitrogen atoms forming azo groups, A1 | 04/09/1996 |
| 5431723 | Use of liquid preparations of a disazo dye in the ink jet process and the diazo dye Useful for the ink jet process are dye preparations which contain from 0.01 to 10% by weight, based on the weight of the preparation, of a dye quantity which is from 90 to 100% by weight the dye of the formula I ##STR1## where Kat.sym. is the equival... | 07/11/1995 |
| 5423100 | Water-soluble azo compounds and polarizing films using the compounds Novel azo compounds having the specific structural formula (1) or (3) set out below, water-soluble dyes containing the compounds, and polarizing films containing the water-soluble dyes: ##STR1## wherein R1 represents a hydrogen or halogen ... | 06/13/1995 |
| 5360472 | Waterfast dye compositions Disclosed are dye compositions of the formula ##STR1## wherein Cp and Cp' are each coupler compounds of the formula ##STR2## wherein the --COOH group and the --OH group can be in any position on either ring, provided that in the naphthalene ring... | 11/01/1994 |
| 5340504 | Light-polarizing films containing dichroic dyes The invention relates to light-polarizing films based on water-soluble organic polymers, more particularly polyvinyl alcohol (PVAL), which contain one or more dichroic bis-, tris- or tetrakis-azo dyes.... | 08/23/1994 |
| 5272259 | Stilbene dyestuffs and light-polarizing films or sheets containing stilbene Dyestuffs which in the form of the free acid conform to the formula ##STR1## in which X and Y independently represent --N.dbd.N--R, --CF3, --CONH2, --CONHR1, --CONR1 R2, --COOH, --COOR1, ... | 12/21/1993 |
| 5262330 | Colorimetric methods and reagents for the assay of calcium in a test sample A chromogenic compound found to be especially selective in the determination of calcium in blood of the general formula (I): ##STR1## where: R is hydrogen or lower alkyl; X is CH2, CH2 CH2, CH.dbd.CH, O, S, SO2,... | 11/16/1993 |
| 5081233 | Bisazo compounds and electrophotographic photoconductors comprising the bisazo compounds A bisazo compound of the general formula: ##STR1## where Ar is selected from the group consisting of substituents (a) ~ (i), a dinitro compound, a diamino compound, and a tetrazonium salt, which respectively serve as a starting material, a first int... | 01/14/1992 |
| 5041539 | Preparation of aqueous concentrates of yellow azo and azoxystilbene dyes utilizing alkanolamine salts The invention relates to a process for the preparation of concentrated storage-stable aqueous solutions of yellow azo- and azoxystilbene dyes which are obtained by self-condensation of 4-nitrotoluene-2-sulfonic acid in the presence of an alkali metal hydr... | 08/20/1991 |
| 4954133 | Mixtures of a 1:1 copper or nickel complex of a stilbene-azo or stilbene-azoxy compound having two 4,4'-(2,2'-disulfostilbenylene) radicals and a 1:1 copper or nickel complex of a stilbene-azo or stilbene-azoxy compound having one such radical Compounds of the formula ##STR1## wherein each A, independently, is a ##STR2## wherein R1 is hydrogen, halo, C1-4 alkyl or C1-4 alkoxy, R2 is hydrogen, halo, C1-4 alkyl, C1-4 alkoxy, ... | 09/04/1990 |
| 4940783 | Disazo containing diaminostilbene as diazo component and an aniline coupling component bearing a cationic alkyl ammonium group Disazo dyes which are suitable for dyeing and printing, especially of paper of all kinds. The dyes correspond to the formula ##STR1## in which R1, R2, R3 and R4 are each an alkyl radical, A is an alkylene radica... | 07/10/1990 |
| 4885254 | Fluorescene technique to monitor cure in polymers A method for determining the extent of polymerization of a polymer system consisting of adding a fluorescent label, the label having a reactivity similar to the reactivity of the curing agent, to the polymer system and measuring the fluorescence intensity... | 12/05/1989 |
| 4791211 | Process for the production of 2-stilbylnaphthotriazole optical bleaches An improved process for the production of 2-stilbylnaphthotriazole optical bleaches which involves diazotizing aminostilbene 2-sulfonic acids, coupling the thus formed diazonium salt with naphthylamino-sulfonic acid to form the stilbylnaphthyl monoazo sal... | 12/13/1988 |
| 4758659 | Hexakisazo dyes A hexakisazo dye suitable for dyeing cellulose, natural or synthetic polyamide meterials, leather, represented by the formula ##STR1## wherein X is --CH.dbd.CH--, --CONH--, --CRH-- (wherein R is phenyl which is unsubstituted or substituted by H or a ... | 07/19/1988 |
| 4743523 | Photosensitive member for electrophotography A photosensitive member for electrophotography comprising a photosensitive layer containing an azo pigment selected from those represented by the following formulas (1)-(6): ##STR1## wherein R is an alkyl, aralkyl, aryl, or acyl each capable of havin... | 05/10/1988 |
| 4742162 | Azo-stibene condensates as leather dyes Condensates of an azo compound of the formula ##STR1## wherein n is 1 or 2, with the stilbene compound of the formula ##STR2## in the molar ratio of 1:1 to 2:1, dye leather in a yellowish-brown shade, which penetrate deeply into the leather, and... | 05/03/1988 |
| 4735882 | Trisazo photsensitive member for electrophotography An electrophotographic photosensitive member comprises a photosensitive layer containing an azo pigment selected from the following general formulae (1) to (5): ##STR1## wherein groups Ar are arylene groups and divalent heterocyclic groups, each... | 04/05/1988 |
