Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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 |
| 7427785 | Nitride-based light emitting device and manufacturing method thereof A light emitting device according to an exemplary embodiment of the present invention includes: an n-type cladding layer; a p-type cladding layer; an active layer interposed between the n-type cladding layer and the p-type cladding layer; and an ohmic contact layer ... | 09/23/2008 |
| 7345314 | Organic light emitting diode display and manufacturing method thereof An organic light emitting diode display includes an insulating layer, a stress buffer disposed on the insulating layer, a first electrode disposed on the stress buffer, an organic light emitting member disposed on the first electrode, and a second electrode disposed... | 03/18/2008 |
| 7253451 | III-nitride semiconductor light emitting device The present invention relates to an III-nitride semiconductor light emitting device in which a single layer or plural layers made of SixCyNz(x≧0, y≧0, x+y>0, z>0) are inserted into or under an active layer and it is directed to a... | 08/07/2007 |
| 7242026 | Semiconductor light-emitting device A semiconductor light-emitting device includes a semiconductor light-emitting thin film, the thickness h of which satisfies the following conditional equation: 0.9 × ( ... | 07/10/2007 |
| 7235816 | Semiconductor light emitter A semiconductor light emitter includes a quantum well active layer which includes nitrogen and at least one other Group-V element, and barrier layers which are provided alongside the quantum well active layer, wherein the quantum well active layer and the barrier la... | 06/26/2007 |
| 7205169 | Driving circuit for AMOLED display and driving method thereof A driving circuit and method for an active matrix organic light emitting diode (AMOLED) display are provided. The driving circuit comprises a power circuit, a linear thermistor, and a pixel circuit. The power circuit provides an equivalent current. The linear thermi... | 04/17/2007 |
| 7189996 | Electron injection composition for light emitting element, light emitting element, and light emitting device In the present invention, an electron injection composition for a light-emitting element, comprising a pyridine derivative represented by general formula 1 and at least one of an alkali metal, an alkali earth metal, and a transition metal, is used to form an electro... | 03/13/2007 |
| 6239453 | Optoelectronic material, device using the same, and method for manufacturing optoelectronic material This invention relates an optoelectronic material comprising a uniform medium with a controllable electric characteristic; and semiconductor ultrafine particles dispersed in the medium and having a mean particle size of 100 nm or less, and an application ... | 05/29/2001 |
| 6111274 | Inorganic light emitting diode An object of the invention is to provide a light emitting diode which enables relatively easy fabrication of large-area displays and is applicable to thin, long life, low cost, full color displays too. The object is attained by a light emitting diode comp... | 08/29/2000 |
