Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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 |
| 7223344 | Method for treating an exhausted glycol-based slurry A method of separating, recovering and reusing components of an exhausted slurry used in slicing silicon wafers from a silicon ingot. In the method, the solid particles and lubricating fluid of the exhausted slurry are separated without decreasing the viscosity of t... | 05/29/2007 |
| 7137874 | Semiconductor wafer, polishing apparatus and method A wafer polishing apparatus for polishing a semiconductor wafer. The polisher comprises a base (23), a turntable (27), a polishing pad (29) and a drive mechanism (45) for driven rotation of a polishing head (63). The polishing head... | 11/21/2006 |
| 6878302 | Method of polishing wafers The method comprises the steps of mounting a first wafer (13) on the mounting member (12) and securing the mounting member to the hub (16) by drawing a vacuum at a first vacuum pressure through the hub; rotating the hub about the hub axis (AH), ... | 04/12/2005 |
| 6537368 | Ideal oxygen precipitating epitaxial silicon wafers and oxygen out-diffusion-less process therefor A process for preparing a silicon epitaxial wafer. The wafer has a front surface having an epitaxial layer deposited thereon, a back surface, and a bulk region between the front and back surfaces, wherein the bulk region contains a concentration of oxygen... | 03/25/2003 |
| 6204152 | Ideal oxygen precipitating silicon wafers and oxygen out-diffusion-less process therefor A process for heat-treating a single crystal silicon wafer to influence the precipitation behavior of oxygen in the wafer in a subsequent thermal processing step. The wafer has a front surface, a back surface, a central plane between the front and back su... | 03/20/2001 |
| 5994761 | Ideal oxygen precipitating silicon wafers and oxygen out-diffusion-less process therefor A process for heat-treating a single crystal silicon wafer to influence the precipitation behavior of oxygen in the wafer in a subsequent thermal processing step. The wafer has a front surface, a back surface, a central plane between the front and back su... | 11/30/1999 |
| 5403406 | Silicon wafers having controlled precipitation distribution A silicon wafer containing oxygen precipitate nucleation centers (or oxygen precipitates) and having a first face, a second face, and a central plane equidistant between the first and second faces. The nucleation centers (or oxygen precipitates) have a no... | 04/04/1995 |
| 5401669 | Process for the preparation of silicon wafers having controlled distribution of oxygen precipitate nucleation centers A process for treatment of a silicon wafer to achieve therein a controlled distribution of the density of oxygen precipitate nucleation centers. In the process, one face of the wafer is shielded and the other, unshielded, face of the wafer is exposed to a... | 03/28/1995 |
| 5272119 | Process for contamination removal and minority carrier lifetime improvement in silicon A process for increasing the minority carrier recombination lifetime in a silicon body contaminated with transition metals, expecially iron. The silicon body is stored at a temperature and for a period sufficient to cause metal to diffuse from the bulk of... | 12/21/1993 |
