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!!
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 |
| 4416786 | Process for the treatment of continuous waste water streams having changing contents of different oxidizable materials with hydrogen peroxide There is provided a continuous process for the lowering of the content of toxic materials in waste waters which also contain other oxidizable materials by quickly and continuously ascertaining the requirement of hydrogen peroxide, namely by potentiometric... | 11/22/1983 |
| 4402837 | Process for treatment of a liquid containing a nickel cyanide compound A process for continuous treatment of a liquid containing a nickel cyanide compound which comprises (1) continuously supplying the said liquid containing a water-soluble metal hydroxide in a content of not less than 0.5 mol per mol of the nickel cyanide c... | 09/06/1983 |
| 4402831 | Effluent treatment Cyanide degrading fungi are grown in the mycalial form. The mycelium is then immobilized and the immobilized mycelium used to degrade cyanide ion in cyanide containing effluents. At least 95% of the cyanide ion is degraded.... | 09/06/1983 |
| 4394356 | Recuperation of cyanides from rinsing solutions of cyanidric processes for eletrodeposition of metals Process for the recuperation of an insoluble salt of a metal from the rinsing solution of an electrodeposition of the metal.... | 07/19/1983 |
| 4341641 | Process for treating cyanide and cyanate containing wastewaters A process for treating a cyanide and cyanate-containing aqueous influent such as a wastewater stream is provided. A two-stage method is included for destroying a cyanide-containing influent which comprises; (a) introducing said cyanide-containing influent into... | 07/27/1982 |
| 4321145 | Ion exchange treatment for removing toxic metals and cyanide values from waste waters Ion exchange techniques are utilized to treat waste water flows, especially those from plating baths, by passing the waste water through a multi-level ion exchange resin bed, the bed thereafter being regenerated by a series of steps, including backwashing... | 03/23/1982 |
| 4312760 | Method for the removal of free and complex cyanides from water Cyanide (free or as a metal complex) dissolved in an aqueous solution such as waste waters is substantially completely removed by the addition of ferrous bisulfite which forms insoluble Prussian blue and other non-toxic reaction products.... | 01/26/1982 |
| 4311597 | Method and apparatus for treatment of wastewater A method of removing ammonia from a wastewater containing free and fixed ammonia said process comprising the steps of: distilling the wastewater to remove the free ammonia; treating the distilled wastewater with soda ash to decompose the fixed ammonia; an... | 01/19/1982 |
| 4284514 | Treatment of hazardous waste In a process for pretreating hazardous waste prior to solidification the waste is received in containers (10). The containers are deposited in a large vessel containing a chemical pretreatment media (9) and subjected to an agitating process in the vessel ... | 08/18/1981 |
| 4267159 | Cyanide recovery Spent aqueous liquor containing cyanide, as from ore treatment, is passed through a bed of suitable anion-exchange resin to segregate the cyanide, which is subsequently recovered in regeneration of the resin by weak alkaline solution. Both the eluted cyan... | 05/12/1981 |
| 4250030 | Process for the removal of cyanides from effluent A method is disclosed for removal of free and complex cyanides from water-containing industrial effluents and wastes by treatment with insoluble solid iron sulfides at a pH in the range of about 7.0 to 8.5. The insoluble solid iron sulfides can be chemica... | 02/10/1981 |
| 4239620 | Cyanide removal from wastewaters Removal of cyanide in wastewater treatment improved by initially contacting a rich cyanide bearing stream with activated sludge at a pH within the range of 3-6 upstream of the wastewater treating plant.... | 12/16/1980 |
| 4220529 | Oxidative purification of water The present invention relates to a process of water treatment, particularly of industrial aqueous effluents and of water from watercourses, such as rivers, lakes, ponds, and the like, comprising oxidation with singlet oxygen.... | 09/02/1980 |
| 4211646 | Waste water process A method is provided for the treatment of a waste water stream characterized by having toxic and corrosive properties due to the presence of a cyanides formates and a halide of a metal or ammonia comprising adding a ferrous ion to said waste water to conv... | 07/08/1980 |
| 4210530 | Treatment of metal plating wastes with an unexpanded vermiculite cation exchange column Multivalent heavy metal ions are removed from metal plating waste streams by passing them through an unexpanded vermiculite cation exchange column. The column is effective to remove copper, zinc, and nickel ions and mixtures thereof. Where cyanide and cya... | 07/01/1980 |
| 4201665 | Use of nonstoichiometric carbon-sulfur compounds to remove components from liquids Nonstoichiometric carbon-sulfur compounds have been found to be effective adsorbents for removing a wide variety of organic and/or inorganic materials from liquids, preferably polar liquids. Removal of biorefractory organics, such as aromatics, is particu... | 05/06/1980 |
| 4188289 | Process for purification of sanitary waters A purification process for removal of suspended solids, carbonaceous material, nitrogenous material, phosphorus, refractory organics, bacteria and viruses comprises of combining and carrying out the various biochemical and chemical reactions and separatio... | 02/12/1980 |
| 4179348 | Removal of cyanide from waste water A method and device for eliminating the cyanide ion from waste water by anodic oxidation, using an electrodialyzer. Water enters the anode compartment of the dialyzer, which is separated from the cathode compartment by a semi-permeable diaphragm permeable... | 12/18/1979 |
| 4176060 | Process for soluble cyanide removal from wastewater streams A process for destroying the soluble cyanide complex content of industrial wastewater streams which comprises acidification of the stream and chlorination at temperatures of at least 80° C., the soluble cyanide complexes breaking down to free CN- | 11/27/1979 |
| 4132636 | Method for treating gas liquor A method for treating a gas liquor to remove polluting substances with a stable treating efficiency and at a high rate which comprises the steps of (A) pre-treating a gas liquor discharged from a quenching of coke oven gas, the gas liquor containing ammonia, p... | 01/02/1979 |
| 4116830 | Method of treating wet-washed silica dust A method of treating the silica dust recovered from waste gasses by wet-washing of the gasses is disclosed. The sludge material is charged to a rotary kiln at a temperature of 800° - 1,400° C. in the presence of an oxidizing or reducing agent whereby th... | 09/26/1978 |
| 4104131 | Process for separating ammonia and acid gases from waste waters containing fixed ammonia salts A water purification process is described for the removal of ammonia and optionally one or more acid gases from waste waters such as coke-plant or coal conversion waste waters. The process involves adding lime to these waste waters in amounts sufficient t... | 08/01/1978 |
| 4071448 | Method for treatment of cyanide-containing waste water A method for treating a cyanide-containing waste water by mixing the waste water with a treating agent containing a carbonyl compound such as formaldehyde and subjecting said mixture to an elevated temperature in an atmosphere containing oxygen to evapora... | 01/31/1978 |
| 4070281 | Method for treating waste water In wet-oxidizing organic waste water containing cyanogen i.e. inorganic-CN, or a compound capable of forming cyanogen under oxidative conditions, if the wet oxidation is conducted in the presence of copper or a copper compound and a specific ammonium salt... | 01/24/1978 |
| 4059514 | Method for purification of industrial waste water A process is provided for treating industrial waste water wherein suspended material and cyanides which are ordinarily dissolved in the water are treated simultaneously to reduce the time of treatment and provide a more economical and effective treatment.... | 11/22/1977 |
| 4049552 | Ozone generating system A housing has an interior casing receiving a coolant. This casing is associated with a forced cooling system and has open ended tubular portions therethrough formed of electrically conducting metal. Glass ozone generating tubes are removably supported in ... | 09/20/1977 |
| 4043907 | Process for treating waste photographic processing solutions Ferricyanide and/or ferrocyanide ions are effectively removed from waste photographic treating solutions by contacting the solutions with weakly basic anion exchange resins. Improved results are obtained with the salt form of the weakly basic anion exchan... | 08/23/1977 |
| 4029557 | Treatment of water containing cyanide Sodium chloride is added to water which is then passed through at least one electrolytic cell. There, electrolysis of the sodium chloride produces chlorine molecules and sodium hydroxide. The water is then flowed into the presence of metal-cyanide contami... | 06/14/1977 |
| 4024037 | Oxidation of cyanides The efficiency of electrochemical oxidation of cyanides is substantially improved by the presence of nickel ions. For example the addition of 10-.sup.3 molar nickel sulphate can triple the efficiency of the process. Nickel cyanide precipitates ... | 05/17/1977 |
| 4020004 | Conversion of radioactive ferrocyanide compounds to immobile glasses Complex radioactive ferrocyanide compounds result from the scavenging of cesium from waste products produced in the chemical reprocessing of nuclear fuel. These ferrocyanides, in accordance with this process, are converted to an immobile glass, resistant ... | 04/26/1977 |
| 3985648 | Method and system for purifying liquid A method and system combining filtration and ion-exchange structures for removing contaminants from liquids. In overall concept, contaminated liquid is passed through filtering mediums to remove particulate matter from the incoming contaminated liquid. Or... | 10/12/1976 |
| 3959130 | Process for decontaminating sewage containing cyanide Process for decontaminating sewage containing cyanide and possibly also containing hydrogen sulfide which comprises where necessary adjusting the pH of the sewage to be decontaminated to a value of over 7.0 and bringing the sewage into intimate contact wi... | 05/25/1976 |
| 3940332 | Treating waste water containing nitriles and cyanides A waste water effluent containing nitriles and cyanides is treated by passing through an acclimated, activated sludge containing a microorganism capable of degrading nitriles and cyanides and being selected from the genus Nocardia, for example, Nocardia r... | 02/24/1976 |
