Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 4279693 | Process for purifying polluted fluids A process for purifying a polluted fluid which comprises heating the polluted fluid and evaporating the components of said polluted fluid which are more volatile while simultaneously concentrating the pollutants into a residue, introducing said residue to... | 07/21/1981 |
| 4236974 | Process and apparatus for purifying waste waters A process and apparatus for purifying waste water which comprises introducing said waste water into a separation zone, removing a portion of the impurities recovered from said separation zone, and concentrating said impurities by their introduction into a... | 12/02/1980 |
| 4164441 | Process and apparatus for concentrating corrosive liquid using radiant heat A corrosive liquid such as sulphuric acid is concentrated using two spaced concentric tubes. A film of the acid flows down the inside of the inner tube and hot flue gases contact the outside of the outer tube. Advantageously, the inner tube transmits radi... | 08/14/1979 |
| 4138309 | Multi-stage apparatus for concentrating sulphuric acid A multi-stage apparatus suited for concentrating sulphuric acid comprising at least one high temperature stage and one low temperature stage, the high temperature stage including a surrounding wall defining a flue gas channel, means for delivering hot flu... | 02/06/1979 |
