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The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 6051198 | Catalyst for purifying fumigation exhaust gases and a method of purifying fumigation exhaust gases A catalyst of the present invention is adapted for purifying fumigation exhaust gases, and comprises, as a catalyst component A, a metal oxide containing at least one, or a composite oxide containing two or more metals selected from the group consisting o... | 04/18/2000 |
| 5472676 | Method of deodorizing a gas containing maloderous components A gas containing malodorous components is deodorized by passing the gas over a MnO2 based catalyst while the catalyst is heated by directly applying an electric current thereto, thereby catalytically oxidizing the malodorous components in the g... | 12/05/1995 |
| 5192452 | Catalyst for water treatment This invention relates to a catalyst for use in water treatment and to a method for the water treatment by the use of the catalyst. The catalyst comprises a first catalyst component e.g. the oxide of titanium, silicon, aluminum and zirconium, and a second... | 03/09/1993 |
| 5158689 | Method for purification of waste water A method for the purification of waste water by the use of a heat-exchanger type reaction vessel composed of a plurality of inner tubes and a shell defining jointly with the outer peripheries of the inner tubes a passage for the flow of a heat transfer me... | 10/27/1992 |
| 5145587 | Method for treatment of waste water A method for the treatment of waste water, which comprises wet oxidizing said waste water with a molecular oxygen-containing gas of an amount 1.0 to 1.5 times the amount thereof theoretically necessary for decomposing at least one substance selected from ... | 09/08/1992 |
| 5102634 | Method for purifying exhaust gas and apparatus A method for purifying an exhaust gas containing catalyst poison(s) by subjecting the gas to a catalytic treatment which comprises previously passing the gas through a layer packed with a highly activated alumina to remove the catalyst poison(s); and an a... | 04/07/1992 |
| 4939260 | Process for producing aromatic nitriles or heterocyclic nitriles A process for producing aromatic or heterocyclic nitriles, which comprises reacting an alkyl-substituted aromatic hydrocarbon or an alkyl-substituted heterocyclic compound with ammonia and oxygen in the presence of a catalyst composition comprising (a) at... | 07/03/1990 |
| 4751005 | Method for treatment of waste water Efficient treatment of waste water is accomplished by subjecting the waste water to wet oxidation under continued supply of an oxygen containing gas at a temperature of not more than 370° C. under a pressure enough for the waste water to retain the liqui... | 06/14/1988 |
| 4418045 | Method for disposal of waste gas and apparatus therefor A method for the disposal of waste gas, which method comprises (a) heating the incoming waste gas containing hydrocarbons, carbon monoxide, and other inflammable organic compounds with the gas obtained by removing heat from the outlet gas of the catalytic... | 11/29/1983 |
