Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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 |
| 4726710 | Co-disposal pollution control method Process for disposal of fossil fuel ash by addition thereto of sodium salts, preferably sodium sulfur oxide salt Na2 SOx where x is 3 and/or 4, in an amount ranging from 5-85 weight percent (dry basis) and adjusting the water percent... | 02/23/1988 |
| 4325713 | Air pollution control process and apparatus Improved combination wet absorber/spray-dry dry wastes collection air pollution control process and apparatus therefor, employing aqueous solutions of sodium or ammonium alkali sorbents injected in an absorber through which SOx -containing flue... | 04/20/1982 |
| 4034063 | Process for control of SOx emissions from copper smelter operations Process for control of SOx emissions from copper smelter operations involving pyrometallurgical reduction of copper ores to elemental copper in which the gases from reverberatory furnaces, roasters, and/or converters are scrubbed with a sodium ... | 07/05/1977 |
| 3984312 | Process for insolubilizing potentially water pollutable wastes from sodium or ammonium type sulfur dioxide air pollution control systems Process for insolubilizing water soluble wastes from alkaline sodium or ammonium type sulfur dioxide control systems used in conjunction with industrial or power plants. The sodium or ammonium sulfite or sulfate wastes are reacted in solution with ferric ... | 10/05/1976 |
| 3973734 | Froth flotation process Froth Flotation method of separation of sodium compounds, principally nahcolite, dawsonite, trona, related authigenic sodium ores, and corresponding sodium compounds including sodium carbonate and sodium bicarboate, from kerogen-type organics-containing r... | 08/10/1976 |
| 3962080 | Sodium sulfur oxides wastes disposal process Method for disposal of water soluble sodium sulfur oxide-containing wastes resulting from industrial processes producing fly and/or bottom ash from fossil fuel utilization and waste or excess sodium sulfur oxide compounds, particularly disposal of sodium ... | 06/08/1976 |
