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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7405519 | Flat fluorescent lamp and driving method thereof A flat fluorescent lamp is provided. Wherein, a discharge gas is disposed in a chamber, and a fluorescent material is disposed on a first inner wall and a second inner wall of the chamber. First electrode sets are disposed on the first inner wall, and second electro... | 07/29/2008 |
| 7382093 | Device for operation of a discharge lamp of the short arc type A device for operating a discharge lamp of the short arc type having a feed device which supplies a direct current to the discharge lamp when operation starts and an alternating current afterwards, in which the feed device supplies a direct current which is smaller ... | 06/03/2008 |
| 7355197 | Light-emitting component and process for its preparation A light-emitting component comprising organic layers and having several layers between a base contact and a cover contact, the corresponding process for its preparation. At least one polymer layer and two molecular layers are arranged, so that when the cover contact... | 04/08/2008 |
| 7279232 | Electroluminescent stability An organic light emitting device is provided. The device has an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer further comprises an emissive material having the structure: | 10/09/2007 |
| 7138763 | Organic electroluminescent devices having a stability-enhancing layer An organic light-emitting device with enhanced operational stability comprising an anode; a hole-transporting layer disposed over the anode; a light-emitting layer disposed over the hole-transporting layer for producing light in response to hole-electron recombinati... | 11/21/2006 |
| 7090928 | Binuclear compounds Devices are provided having an anode, a cathode, and an emissive layer disposed between and electrically connected to the anode and the cathode. The emissive layer includes an emissive material having more than one metal center. In one embodiment, first and second m... | 08/15/2006 |
| 7087321 | Organic light emitting devices having reduced pixel shrinkage The present invention relates to organic light emitting devices (OLEDs), and more specifically to efficient OLEDs comprising an array of pixels and having reduced pixel shrinkage. The devices of the present invention comprise further relates to materials for use as ... | 08/08/2006 |
| 7029765 | Organic light emitting devices having reduced pixel shrinkage The present invention relates to organic light emitting devices (OLEDs), and more specifically to efficient OLEDs comprising an array of pixels and having reduced pixel shrinkage. The devices of the present invention comprise further relates to materials for use as ... | 04/18/2006 |
| 7011897 | Organic light emitting materials and devices An organic light emitting device is provided. The device has an anode, a cathode, and an emissive layer disposed between the anode and the cathode, the emissive layer further comprising an emissive material having the structure: ... | 03/14/2006 |
| 6951694 | Organic light emitting devices with electron blocking layers The present invention relates to organic light emitting devices (OLEDs), and more specifically to efficient OLEDs having electron blocking layers. The devices of the present invention comprise at least one electron blocking layer which functions to confine electrons... | 10/04/2005 |
| 6916554 | Organic light emitting materials and devices An organic light emitting device is provided. The device has an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer further comprises an emissive material having the structure: ... | 07/12/2005 |
| 6879108 | Dielectrically impeded discharge lamp with a spacer A discharge lamp, suitable for operation by means of dielectrically impeded discharge, having a discharge vessel with two at least partially parallel vessel walls (2; 7), and at least one spacer (1) made from optically transparent insulating material. ... | 04/12/2005 |
| 6559576 | Gas discharge tube having sealed envelope with metallic portion and light projection glass window In a gas discharge tube in accordance with the present invention, a side tube is formed from a metal, the outer periphery of the stem is provided with a joint portion made of a metal, and the latter is joined to a metal-made joint portion of the side tube... | 05/06/2003 |
| 6380663 | Gas discharge tube having a side tube with glass coating In a gas discharge tube in accordance with the present invention, one or both of the inner wall face and outer wall face of a side tube body are provided with a coating made of a glass material or ceramics. As a result, the side tube body can be made of v... | 04/30/2002 |
| 5818164 | Fluorescent lamp with electrode housing A flat planar fluorescent lamp having barrier structures overlaying the electrodes is described. The barrier structures include barrier walls and platforms between the electrodes and the lamp cover with passageways between the platforms and the lamp cover... | 10/06/1998 |
| 5536999 | Planar fluorescent lamp with extended discharge channel A flat planar fluorescent lamp having barrier structures overlaying the electrodes is described. The barrier structures include barrier walls and platforms between the electrodes and the lamp cover with passageways between the platforms and the lamp cover... | 07/16/1996 |
| 4853591 | Multiple-tube compact low-pressure discharge fluorescent lamp At least two discharge units (2, 3; 14, 15, 16; 21, 22, 23, 27, 28, 29) are ocated adjacent each other, each of the discharge units preferably including a unitary U-shaped tube having two longitudinal leg portions (2a, 2b; 3a, 3b) extending parallel to eac... | 08/01/1989 |
| 4697121 | Low-pressure mercury vapor discharge lamp A low-pressure mercury vapor discharge lamp in which a rare gas and mercury are provided in an outer bulb, which in turn contains therein a plurality of bent inner tubes, each having an opening at an end and an electrode at the other end thereof. A starti... | 09/29/1987 |
| 4611148 | Low-pressure mercury vapor discharge lamp A low-pressure mercury vapor discharge lamp in which a rare gas and mercury are provided in an outer bulb, which in turn contains therein a plurality of bent inner tubes, each having an opening at an end and an electrode at the other end thereof. A starti... | 09/09/1986 |
| 4020379 | Bulb-shaped flashtube with metal envelope A bulb-shaped flashtube is provided with a metal envelope to increase its strength and enhance its reliability and operating characteristics. The metal envelope comprises a hollow cylindrical container including an open bottom end and an inwardly extendin... | 04/26/1977 |
