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Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 4085193 | Catalytic process for reducing nitrogen oxides to nitrogen A catalyst compositions for reducing nitrogen oxide comprising, as its chief ingredient, an intimate mixture of A. titanium (Ti) as component A, with B. at least one metal selected from the group consisting of molybdenum (Mo), tungsten (W), iron (Fe), vanadium... | 04/18/1978 |
| 4081510 | Process for catalytically treating an exhaust gas containing ammonia gas and oxygen gas to reduce said ammonia gas to nitrogen A process for treating an exhaust gas containing substantially only ammonia gas and oxygen gas as reactants to decompose catalytically the ammonia gas to nitrogen and water, which comprises contacting at an elevated temperature the exhaust gas with a cata... | 03/28/1978 |
| 4043945 | Method of producing thin layer methanation reaction catalyst A catalyst layer is formed on the metallic surface of a structure constructing a reactor by diffusing a developable metal into the structure by the pack cementation method and developing the diffused metal. The catalyst layer is metallurgically combined w... | 08/23/1977 |
| 3977836 | Method and apparatus for determining ammonia concentration of gas An ammonia gas to be determined, and an oxidative gas containing nitrogen oxides in moles more than those of the ammonia are brought into contact with an analytical catalyst capable of forming nitrogen and water from ammonia and nitrogen oxides. Concentra... | 08/31/1976 |
| 3976745 | Process for reducing nitrogen oxides to nitrogen A catalyst composition for reducing nitrogen oxides, which is characterized in that the same contains, as its chief ingredient, A. tin (Sn) as the component A, and B. at least one metal selected from the group consisting of molybdenum (Mo), tungsten (W), and i... | 08/24/1976 |
