Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7700251 | Electrophotographic photoconductor and image-forming apparatus An electrophotographic photoconductor having an excellent crack resistance and wear resistance as well as excellent sensitivity characteristics, while keeping good image characteristics of the photoconductor is provided. In addition, an image-forming apparatus equip... | 04/20/2010 |
| 7427460 | Hydrazone-based charge transport materials having an ethylenically unsaturated group Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the ... | 09/23/2008 |
| 7416824 | Organic photoconductive material electrophotographic photoreceptor and image forming apparatus using the same According to the present invention, an enamine compound having a specific structure is used as an organic photoconductive material. This enamine compound is obtained based on asymmetrical secondary naphtylamine which is readily available at a lowest price, by introd... | 08/26/2008 |
| 7416825 | Single layer type electrophotographic photoconductor and image forming device The present invention provides a single layer type electrophotographic photoconductor which exhibits the small number of generated black spots in a formed image and exhibits the excellent sensitivity characteristic even when the photoconductor is used for a long tim... | 08/26/2008 |
| 7387862 | Electrophotographic photoreceptor and image forming apparatus providing the same An electrophotographic photoreceptor is provided that in excellent in the electrical characteristics such as the charging property, the sensitivity and the responsiveness, the oxidizing gas resistance such as the ozone resistance and the nitrogen oxide resistance, a... | 06/17/2008 |
| 7365230 | Cross-linkable polymers and electronic devices made with such polymers The present invention relates to novel cross-linkable polymers and a wide variety of electronic devices containing at least one layer having the polymer. The compounds can function as monomers, and copolymers can be formed from such monomers, such copolymers compris... | 04/29/2008 |
| 7351508 | Organophotoreceptors with a charge transport material having multiple vinyl-containing hydrazone groups Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the ... | 04/01/2008 |
| 7345141 | Polymer material having carrier transport property, and organic thin film element, electronic device, and conductor line which use same The present invention provides a polymer material having a carrier transport property. The polymer material has first and second states in which degrees of the carrier transport property are different from each other, microscopic structures in the first and second s... | 03/18/2008 |
| 7344811 | Polysilane-based charge transport materials Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a polymeric charge transport material h... | 03/18/2008 |
| 7326506 | Bridged charge transport materials having a central sulfur atom linkage Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the ... | 02/05/2008 |
| 7326793 | Process for the preparation of diketopyrrolopyrroles The present invention relates to a process for the preparation of diketopyrrolopyrroles of the formula (I), wherein A1, A2, A3 and A4 are as defined in the description of the present invention, to new diketopyrrolopyrroles of the general formula I obtainable by the ... | 02/05/2008 |
| 7320849 | Organophotoreceptor with a charge transport material having two epoxidated-hydrazone groups Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the ... | 01/22/2008 |
| 7316890 | Indolestyryl compound for use in recording media and method for fabrication thereof Indolestyryl compounds and use thereof for a high density recording media and method for fabricating the same. The indolestyryl compounds exhibit strong absorbance in the visible light region (400˜700 nm) of the spectrum, resistance to heat and light, high light se... | 01/08/2008 |
| 7316878 | Hydrazone-based charge transport materials having an unsaturated acyl group Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the ... | 01/08/2008 |
| 7300732 | Organophotoreceptors with azine-based compounds Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the formula, | 11/27/2007 |
| 7291431 | Organophotoreceptor with charge transport compound having an epoxy group This invention relates to a novel organophotoreceptor that comprises an electrically conductive substrate and photoconductive element on the electrically conductive substrate, the photoconductive element having a) a novel charge tr... | 11/06/2007 |
| 7282529 | Coating liquid for an electrographic photoreceptor and a method of preparation using a ball mill An electrophotographic photoreceptor including an electroconductive substrate, a photosensitive layer located overlying the electroconductive substrate, and optionally a protective layer overlying the photosensitive layer, wherein an outermost layer of the photorece... | 10/16/2007 |
| 7271406 | Electron transport agents for organic electronic devices Compounds and compositions are provided that can be used as electron transport agents in organic electronic devices such as organic electroluminescent devices. The compounds are non-polymeric and have an aromatic core conjugated to end capping groups. The aromatic c... | 09/18/2007 |
| 7267917 | Photoreceptor charge transport layer composition A charge transport layer composition for a photoreceptor includes at least a binder, at least one arylamine charge transport material, e.g., N,N′-diphenyl-N,N′-bis(3-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine, and at least one polymer containing carboxylic a... | 09/11/2007 |
| 7261952 | Red color emitting compounds for organic electroluminescent device and an organic electroluminescent device using them The present invention relates to red color emitting compounds for an organic electroluminescent device (OELD), particularly to red color emitting compounds represented by the following formula (1) having high luminescence efficiency and enhanced thermal-stability: | 08/28/2007 |
| 7261988 | Azine-based charge transport materials An improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having t... | 08/28/2007 |
| 7244541 | Linked dihydrazone-based charge transport compounds Improved organophotoreceptors comprise: (a) a charge transport compound having the formula where n is an integer from... | 07/17/2007 |
| 7235194 | Two-photon or higher-order absorbing optical materials for generation of reactive species Disclosed are highly efficient multiphoton absorbing compounds and methods of their use. The compounds generally include a bridge of pi-conjugated bonds connecting electron donating groups or electron accepting groups. The bridge may be substituted with a variety of... | 06/26/2007 |
| 7229732 | Imaging members with crosslinked polycarbonate in charge transport layer A composition comprised of a charge transport compound and a crosslinked polymer composition generated from the curing of a solution of a hydroxyl pendant polycarbonate, a hydroxylated charge transport compound, a curing agent and a solvent. ... | 06/12/2007 |
| 7223507 | Imaging members A photoconductive imaging member comprised of a supporting substrate, and thereover a single layer comprised of a mixture of a photogenerator component, charge transport components, and a certain electron transport component, and a certain polymer binder. ... | 05/29/2007 |
| 7220522 | Electrophotographic photoreceptor, method for manufacturing the electrophotographic photoreceptor, and image forming method, image forming apparatus and process cartridge using the electrophotographic photoreceptor A photoreceptor including a photosensitive layer including a specific diamine compound, or a photoreceptor including an electroconductive substrate; a photosensitive layer located overlying the electroconductive substrate; and optionally a protective layer located o... | 05/22/2007 |
| 7217483 | Electrophotographic photoreceptor, drum cartridge employing the electrophotographic photoreceptor, and image-forming apparatus The present invention provides an electrophotographic photoreceptor which has high light resistance, has high durability in exposure to oxidizing gases such as ozone and NOx, is excellent in mechanical properties such as printing durability, wearing resis... | 05/15/2007 |
| 7205080 | Arylamine compound, charge transport material, electrophotographic photoreceptor, image forming apparatus and process cartridge An arylamine compound represented by formula (1). Ar1 represents a phenyl group substitued by a substituted or unsubstituted monovalent polycyclic aromatic hydrocarbon group, and a substituted or unsubst... | 04/17/2007 |
| 7202002 | Hydrazone-based charge transport materials Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the ... | 04/10/2007 |
| 7196224 | 1,3,5-tris(arylamino)benzenes The invention provides 1,3,5-tris(arylamino)benzenes represented by the general formula (I) wherein A is naphthyl, anthryl, phenanthryl, biphenylyl or terphenylyl group, and R is alkyl having 1–6 carbon atoms o... | 03/27/2007 |
| 7189482 | Organophotoreceptor with charge transport compound with an azine group Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport compound having the ... | 03/13/2007 |
| 7186847 | Process for the direct preparation of pyrrolo[3,4-c]pyrroles The present invention relates to a process for the direct preparation of pyrrolo[3,4-c]pyrroles (DPPs) of the formula (1), pigment compositions containing them and their use for coloring high molecluar weight organic materials, such as plastics and paints. The obtai... | 03/06/2007 |
| 7183028 | Organophotoreceptor with novel charge transport compounds having an epoxy group Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the ... | 02/27/2007 |
| 7179574 | Hydrazone-based charge transport materials Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the ... | 02/20/2007 |
| 7175956 | Organic photoconductive material, electrophotographic photoreceptor comprising the same, and image-forming apparatus The invention is to provide an organic photoconductive material capable of realizing electrophotographic photoreceptors of high reliability that have high charge potential, high sensitivity, good responsiveness to light and good durability, of which the characterist... | 02/13/2007 |
| 7166400 | Organophotoreceptor with a hydrazone polymer charge transport material An organophotoreceptor comprises an electrically conductive substrate and photoconductive element on the electrically conductive substrate, the photoconductive element having a) a charge transport material with the formula ... | 01/23/2007 |
| 7144665 | Organophotoreceptor with a charge transport material having two hydrazone groups Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the ... | 12/05/2006 |
| 7132125 | Processes for coating photoconductors A process including: providing a cylindrical substrate rotating about the long axis; applying at least one coating layer with a direct writing applicator on the outer surface of the rotating substrate; and curing the resulting coated layer or layers. The use of a di... | 11/07/2006 |
| 7132209 | Organophotoreceptor with charge transport material having three arylamino groups Improved organophotoreceptor comprises an electrically conductive substrate and a photoconductive element on the electrically conductive substrate, the photoconductive element comprising: (a) a charge transport material having the ... | 11/07/2006 |
| 7125633 | Imaging member having a dual charge transport layer An imaging member having a charge transport layer with multiple regions or layers is provided. The charge transport layer includes at least two charge transport layers coated from solutions of different components and concentrations, wherein the second (top) transpo... | 10/24/2006 |
