The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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 |
| 6689385 | Formulations for the treatment of insulin resistance and type 2 diabetes mellitus The compositions and dosage forms of the invention are clinically useful as methods for increasing the effectiveness, efficiency and safety of biguanides (metformin) and/or sulfonylureas in the prevention and treatment of insulin resistance and diabetes m... | 02/10/2004 |
| 6648765 | Supporting device for a plurality of adapter chucks A supporting device for a plurality of adapter chucks for the precision grinding or polishing of optical components comprises a spindle shaft having a central bore for supplying one of a gas and a vacuum, at least one arm adjustably supported by a head of... | 11/18/2003 |
| 6139414 | Flexible tool for plateauing a surface The present invention provides a radially expandable plateauing tool for finishing bore surfaces. The tool includes a shank for attachment to a means for rotation, and a substantially cylindrical portion including an outer work-engaging surface including ... | 10/31/2000 |
| 4936058 | Precision hone A precision hone is set forth particularly for use in the honing of relatively small diameter bores, wherein a main body telescopingly receives therein a sleeve insert secured at its upper end to a tension release spring. A plurality of diametrically oppo... | 06/26/1990 |
| 4275530 | Grinding heads for grinding machines A grinding head has at least one expandable grinding tube mounted on an expansion cone. The expansion cone is carried by, and is rotatable with, an expansion rod which is coupled for rotation with a driven part of the head. The expansion rod and cone are ... | 06/30/1981 |
| 4197680 | Precision honing mandrel A precision honing mandrel including a tubular honing member having a helical, straight or other shaped groove therethrough, a substantially cylindrical outer surface, a tapered inner surface, and a layer of a relatively hard wear resistant abrasive subst... | 04/15/1980 |