Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 5750043 | Fluorochemical foam stabilizers and film formers This invention relates to water soluble fluorochemical foam stabilizers and film formers derived from polyamines, perfluoroalkyl group containing esters or acid halides and hydrophilic and hydrophobic group containing compounds which react with primary, s... | 05/12/1998 |
| 5616273 | Synergistic surfactant compositions and fire fighting concentrates thereof This invention relates to synergistic surfactant compositions based on water insoluble amphoteric fluorochemical surfactants and water soluble anionic hydrocarbon or fluorochemical surfactants of the sulfate or sulfonate type and aqueous film forming foam... | 04/01/1997 |
| 5502225 | Perfluoroalkyl terminated urethane lubricants This invention relates to perfluoroalkyl group terminated urethanes, thiourethanes and ureas of the general formula (R--X--CONH)m A where m is 1, 2 or 3, R is Rf -E and optionally R1 with the proviso that at least one R is R | 03/26/1996 |
| 5260400 | Fluorine and silicon containing water and oil repellents The present invention relates to silicone and perfluoroalkyl group containing telomers of the formulae ##STR1## wherein Rf is a straight or branched chain perfluoroalkyl up to 18 carbon atoms or said perfluoroalkyl substituted by perfluoro... | 11/09/1993 |
