Quotables
"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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 |
| 4333488 | Method of transporting viscous hydrocarbons An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the improvement comprises adding water containing an effective amount of the adipate ester of a certain polyoxyethylene-polyoxypropylene block polymers.... | 06/08/1982 |
| 4318787 | Sacrificial anode composition in cathodic protection process A composition which is particularly suitable for providing cathodic protection of metal structures is disclosed. The composition comprises a major amount of particulate anode material and a minor amount of a thixotropic carrier material. A method of using... | 03/09/1982 |
| 4316976 | Preparation of polyvinyl halide with quaternary salt of cellulose sulfate An improved method for preparing polyvinyl halide by suspension polymerization is disclosed. The improvement comprises adding a minor, but effective, amount of a quaternary ammonium salt of cellulose sulfate to the reaction admixture prior to polymerizati... | 02/23/1982 |
| 4315995 | Preparation of cation-exchange resin A process for preparing a cation-exchange resin is disclosed. The process comprises: (a) treating a chlorine-containing material, which is the distillation residue obtained by chlorinating or oxychlorinating a C2 -C40 hydrocarbon, wi... | 02/16/1982 |
| 4302618 | Traction fluid A traction fluid is disclosed. The traction fluid is the product obtained by hydrogenation of a hydrocarbon composition containing at least 40 weight percent diphenylalkanes containing 22 to 34 carbon atoms.... | 11/24/1981 |
| 4295980 | Waterflood method An improvement is disclosed in the method of recovering hydrocarbons from a subterranean formation by use of an aqueous mixture containing an alkali metal hydrocarbon sulfonate and a solubilizing agent (e.g. isobutanol). Briefly, the improvement comprises... | 10/20/1981 |
| 4290924 | Catalyst composition useful for preparing 2,6-xylenol A process for preparing 2,6-xylenol in high selectivity and a catalyst composition useful therein are disclosed. The process comprises reacting phenol, o-cresol or mixtures thereof with methanol in presence of water, hydrogen and a catalyst consisting ess... | 09/22/1981 |
| 4287902 | Method of transporting viscous hydrocarbons An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the method comprises adding water containing an effective amount of a combination of an alkaryl sulfonate having a molecular weight of 415 to 470 and a ... | 09/08/1981 |
| 4286390 | Method for removal of water from activated carbon A method of removing water from activated carbon is disclosed. Briefly, the method comprises (a) passing liquid 1,2-dichloroethane through a bed of activated carbon until a bulk water phase ceases to exit the bed or until from about 60 to about 80 weight ... | 09/01/1981 |
| 4287089 | Method for removal of water from activated carbon A method of removing water from activated carbon is disclosed. Briefly, the method comprises (a) passing liquid 1,2-dichloroethane through a bed of activated carbon until a bulk water phase ceases to exit the bed or until from about 60 to about 80 weight ... | 09/01/1981 |
| 4285356 | Method of transporting viscous hydrocarbons An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the method comprises adding water containing an effective amount of (a) an anionic alkyl polyether ethoxylated sulfate or (b) a combination of this mate... | 08/25/1981 |
| 4274943 | Removal of metal alkaryl sulfonates from hydrocarbons A method of removing metal alkaryl sulfonates from a hydrocarbon solution is disclosed. Briefly, the method comprises (a) contacting the hydrocarbon solution containing metal alkaryl sulfonates with an aqueous basic solution containing a "recovery" surfac... | 06/23/1981 |
| 4265264 | Method of transporting viscous hydrocarbons An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the method comprises adding water containing an effective amount of a combination of (a) a sodium or ammonium salt of an ethoxylated alcohol sulfate and... | 05/05/1981 |
| 4251343 | Sacrificial anode apparatus A sacrificial anode apparatus for providing cathodic protection of metal structures, a portion of which is in water is disclosed. The anode apparatus comprises: (a) a perforated subsurface container for anode material, (b) sacrificial anode material in continu... | 02/17/1981 |
| 4249554 | Method of transporting viscous hydrocarbons An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the improvement comprises adding water containing an effective amount of a combination of an ethoxylated alkyl phenol and a sodium or ammonium salt of a... | 02/10/1981 |
| 4246920 | Method of transporting viscous hydrocarbons An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the improvement comprises adding water, certain specific surfactants and a basic material to the hydrocarbon. The resulting emulsion has a much lower vi... | 01/27/1981 |
| 4246919 | Method of transporting viscous hydrocarbons An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the improvement comprises adding water containing an effective amount of a combination of an ethoxylated alkyl phenol and an ethoxylated polypropylene g... | 01/27/1981 |
| 4239052 | Method of transporting viscous hydrocarbons An improvement in the method of transporting viscous hydrocarbons through pipes is disclosed. Briefly, the improvement comprises adding water containing an effective amount of a combination of an ethoxylated alkyl phenol and a low molecular weight alkaryl... | 12/16/1980 |
| 4236031 | Preparation of 5-t-butyl alkyl-substituted phenols A process for preparing 5-t-butyl alkylphenols from alkylphenols in high selectivity is disclosed, wherein the starting alkylphenol is a 3-alkylphenol or a 2,3-dialkylphenol and the alkyl group is a C1 -C6 primary alkyl. The process ... | 11/25/1980 |
| 4235712 | Removal of anionic surfactants from water A method of removing specific water-soluble anionic surfactants from water is disclosed. Briefly, the method comprises forming an emulsion by adding a nonionic surfactant and a hydrocarbon to the water and anionic surfactant. The emulsion is broken, with ... | 11/25/1980 |
| 4236032 | Preparation of 6-t-butyl alkyl-substituted phenols A process for preparing 6-t-butyl alkylphenols from alkylphenols in high selectivity is disclosed, wherein the starting alkylphenol is a 3-alkylphenol or a 2,3-dialkylphenol and the alkyl group is a C1 -C6 primary alkyl. The process ... | 11/25/1980 |
| 4227024 | Preparation of 2,6-xylenol and catalyst composition useful therefor A process for preparing 2,6-xylenol in high selectivity and a catalyst composition useful therein are disclosed. The process comprises reacting phenol, o-cresol or mixtures thereof with methanol in presence of water, hydrogen and a catalyst consisting ess... | 10/07/1980 |
| 4213762 | Determination of chromate ion in drilling mud filtrates A method of determining the amount of chromate ion in drilling and mud filtrates containing lignosulfonates is disclosed. Briefly, the method comprises: (a) treating the filtrate with an effective amount of hydrogen peroxide to destroy any color bodies co... | 07/22/1980 |
| 4201637 | Sacrificial anode apparatus A sacrificial anode apparatus for providing cathodic protection of metal structures, especially steel offshore platforms, is disclosed. The anode apparatus comprises (a) container for anode material, (b) anode material, and (c) means for continuously and/... | 05/06/1980 |
| 4191883 | Method for determining residual oil concentration of a formation using thermal neutron decay measurements An improvement in the method of determining oil saturation in a subterranean formation, penetrated by a well-bore, is disclosed. In the method of determining oil concentration by measuring thermal neutron decay with a low salinity aqueous liquid in said w... | 03/04/1980 |
| 4187255 | Process for methylating naphthalene Broadly, the present invention is directed to a process for preparing 1-methylnaphthalene and 2-methylnaphthalene wherein the process comprises reacting naphthalene and methanol in the vapor phase at elevated temperatures and optionally under pressure in ... | 02/05/1980 |
| 4180686 | Oxidative coupling of alkylphenols A method of preparing carbon-carbon coupled condensation products of alkylphenols is disclosed. Briefly, the method comprises oxidation of certain specific alkylphenols using palladium acetate as the catalyst in acetic acid or other suitable solvent.... | 12/25/1979 |
| 4148834 | Preparation of synthetic hydrocarbon lubricants This disclosure concerns an improved process for preparing a synthetic hydrocarbon lubricant composition, said composition consisting essentially of di-long-chain alkyl-substituted aromatic hydrocarbons. The improved process is directed to a two-step alky... | 04/10/1979 |
| 4143081 | Prevention of color deterioration of diphenylalkanes A method of preventing, or substantially reducing, the amount of color deterioration of diphenylalkanes, said diphenylalkanes being in contact with a color-deteriorating material, is disclosed. Briefly, the method comprises contacting the diphenylalkanes ... | 03/06/1979 |
| 4140711 | Preparation of alkanedisulfonates from olefins using carboxylic acid An improvement in the method of preparing alkanedisulfonates by the reaction of olefins with bisulfite or sulfite is disclosed. The improvement comprises conducting the reaction in the presence of an effective amount of a C3 -C6 mono... | 02/20/1979 |
| 4133871 | Process for preparing alumina An improvement in the method of preparing alumina by water hydrolysis of aluminum alkoxides is disclosed. Briefly, the improvement comprising admixing the water and aluminum alkoxide under high velocity conditions prior to passing the resulting admixture ... | 01/09/1979 |
| 4117085 | Treatment of alumina to reduce discoloration A method of reducing discoloration of alumina which is caused by exposure of said alumina to high temperatures is disclosed. The method comprises adding an effective amount of an inorganic oxidizing agent (e.g. H2 O2 or NaOCl) to the... | 09/26/1978 |
| 4117243 | Preparation of o-benzylphenol A process for preparing o-benzylphenol is disclosed. The process comprises heating benzyl phenyl ether, either in liquid or vapor phase, in the presence of an effective amount of activated alumina catalyst.... | 09/26/1978 |
| 4112206 | Polyvinyl chloride having improved antistatic properties Polyvinyl chloride containing certain fluorocarbon surfactants has improved antistatic properties. The fluorocarbon surfactants are fluorinated alkyl polyoxyethylene ethanols and a compound represented by the formula ##STR1##... | 09/05/1978 |
| 4110543 | Method of preparing hydrocarbyl-substituted cresols A method of preparing hydrocarbyl-substituted cresols is disclosed. The method comprises heating a mixture of mono- or di-hydrocarbyl-substituted cresols and an alcohol, which is benzyl alcohol or a C1 -C10 aliphatic alcohol, at an e... | 08/29/1978 |
| 4110544 | Preparation of cresols A process for preparing cresols from di-hydrocarbyl-substituted cresols, wherein the hydrocarbyl groups contain from 3 to 7 carbon atoms, is disclosed. In the process the di-hydrocarbyl-substituted cresol is contacted with a catalyst (e.g. alumina) in the... | 08/29/1978 |
| 4107054 | Lubricating oil compositions Lubricating oil compositions having improved corrosion inhibition are disclosed. The lubricating oil compositions comprise (a) a major amount of a base lubricating oil, (b) alkenyl succinimide dispersant, and (c) corrosion inhibiting amount of certain spe... | 08/15/1978 |
| 4107421 | Removal of vinyl halide from polyvinyl halide A method for reducing the vinyl halide content of polyvinyl halide, in particle form, containing vinyl halide, to a preselected level is disclosed. Briefly, the method comprises: (a) determining the threshold temperature corresponding to said preselected ... | 08/15/1978 |
| 4105698 | Preparation of cinnamyl-substituted phenols A process for preparing ortho-substituted cinnamyl phenols is disclosed. The process comprises heating a mixture of cinnamyl alcohol and phenol in the presence of an effective amount of activated alumina.... | 08/08/1978 |
| 4104806 | Method of fluidized bed drying An improved method of drying particulate matter, subject to agglomeration, by fluidized bed drying is disclosed. The improvement of the method comprises adding an effective amount of a fluidizing agent to the particulate matter prior to drying.... | 08/08/1978 |
