Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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 |
| 7323150 | Methods for recovering at least one metallic element from ore A method for recovering at least one metallic element from ore or other material is described and includes reacting ore or other material with a salt capable of recovering the metallic element from the ore or other material to form a reaction product that includes t... | 01/29/2008 |
| 6241893 | Water filtration media, apparatus and processes An amorphous potassium aluminosilicate filtration media which may be mixed with activated carbon filters water to remove oxygen, chlorines, hardness, alkalinity, ammonia, hydrogen, hydrogen sulfide, sodium sulfite and other contaminants. The particular so... | 06/05/2001 |
| 5900221 | Process of preparing a solution of cesium and rubidium salts The process for preparing a cesium and rubidium salt-containing solution includes a hydrothermal digestion of an uncalcined pollucite and/or calcined lepidolite particulate having an average particle size up to 0.5 mm with an aqueous solution of Ca(OH) | 05/04/1999 |
| 5770739 | Non-aqueous hydrogen peroxide complex An apparatus and process for hydrogen peroxide vapor sterilization of medical instruments and similar devices make use of hydrogen peroxide vapor released from a substantially non-aqueous organic hydrogen peroxide complex, such as a urea-peroxide complex.... | 06/23/1998 |
| 5593650 | Method for producing a high-density saline cesium and rubidium solution The method of making a high density saline cesium and rubidium solution includes comminuting uncalcined pollucite and/or calcined lepidolite to a grain size of less than 0.1 mm; combining the comminuted material in the presence of water with Ca(OH)2 | 01/14/1997 |
| 5173088 | Process for preparing crystals of anhydrous sodium sulfide Disclosed is a process for preparing crystals of anhydrous sodium sulfide, the process being characterized in that the process comprises the steps of heating crystals of polyhydrate of sodium sulfide under a pressure of about 500 torr or less at a tempera... | 12/22/1992 |
| 4963515 | Lightweight hydrogel-bound aggregate shapes and process for producing same Hydrogel-bound aggregate lightweight building materials, such as blocks for use in replacement of lightweight concrete or extruded clay blocks, prepared by expanding and drying a foamable composition containing precursors for an alkali metal aluminosilica... | 10/16/1990 |
| 4913736 | Process for recovering platinum group metals A process for recovering Platinum Group metals from material comprising one or more Platinum Group metals and one or more Group IA metals supported on carbon comprises heating at a temperature between 700° C. and 1150° C. in a stream of an inert gas or ... | 04/03/1990 |
| 4814300 | Porous ceramic shapes, compositions for the preparation thereof, and method for producing same Disclosed herein is a foamable, self-setting ceramic composition which can be poured into molds or injection-molded or extruded to achieve desired shapes, and thereafter fired to produce shaped, porous ceramic articles useful as filter elements, insulatio... | 03/21/1989 |
| 4812424 | Kiln furniture for the firing of ceramic articles Low mass kiln furniture for supporting ceramic ware during the firing thereof is provided having excellent thermal shock resistance and high temperature stability, the kiln furniture being comprised of a porous refractory ceramic body of low density prepa... | 03/14/1989 |
| 4169131 | Process for recovering caustic alkali from spent alkali liquor A process for recovering caustic alkali from spent alkali liquor, in which a spent alkali liquor and iron oxide are roasted to obtain a product containing alkali ferrate and the product of roasting is hydrolyzed at a temperature over 110° C. and under pr... | 09/25/1979 |
| 4140747 | Process for the production of potassium chloride and magnesium chloride from carnallite The present invention relates to a process for the production of potassium chloride and of magnesium chloride hexahydrate (bischoffite) from carnallite or from carnallite containing sodium chloride. The process comprises heating carnallite at a temperature of ... | 02/20/1979 |
