Today In History
Orville and Wilbur Wright received a patent for a "Flying Machine" with a motor.
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 |
| 4535725 | Hair-containing rawhide toys This invention relates to toys made of hair-containing rawhide, such as animal toys made thereof.... | 08/20/1985 |
| 4487911 | Stable polyamic acids A stable solution of an aromatic polyamic acid of controlled molecular weight, of the type capable of being converted to polyimides, which undergoes relatively little change in viscosity or gelling over extended periods of time at room temperature. Such s... | 12/11/1984 |
| 4480095 | Hexahydropyrimidines and corresponding linear polyamines This invention relates to a process of reducing 2,4,5-trialkyl 2,3,4,5-tetrahydropyrimidine and/or 2,5,6,8,9-pentaalkyl 1,3,7-triazabicyclo (3,3,1) non-3-enes to yield 2,4,5-trialkylhexahydropyrimides and/or 2,4,5,6-tetraalkyl-5-(2-azoalkyl) hexahydr... | 10/30/1984 |
| 4447606 | Hydroxy and hydroperoxy tetrahydropyrimidines This invention relates to 5-hydroperoxy and/or 5-hydroxy derivatives of 2,2,4,4-dipentamethylene 5,6-tetramethylene 2,3,4,5-tetrahydropyrimidines; and to the preparation thereof. The compounds of this invention have utility as corrosion inhibitors.... | 05/08/1984 |
| 4446054 | Demulsification of surfactant-petroleum-water flood emulsions This invention relates to the demulsification of surfactant petroleum water flood emulsions which comprises treating such emulsions with a demulsifier in conjunction with an amine, preferably a polyalkylenepolyamine.... | 05/01/1984 |
| 4446056 | Preparation of mixture of nitrogen and sulfur-nitrogen heterocyclics and use in corrosion inhibiting A process of preparing sulfur-containing compositions which comprises reacting hexahydrotriazines, or the precursors thereof, with sulfur or sulfur-containing compounds. The products of the reaction are useful as corrosion inhibitors. Additionally, ketone... | 05/01/1984 |
| 4426229 | Oxidized alpha-olefins In contrast to hydrocarbon waxes, alpha-olefin waxes can be oxidized with little if any reduction in hardness. The oxidized product can be used as such or further reacted with polyisocyanates to yield isocyanated products. Salts of the isocyanated product... | 01/17/1984 |
| 4418195 | Silicon-containing quaternary ammonium thiazines This invention relates to silicon-containing thiazines and to the process of preparing them. These are illustrated by the following formulae: ##STR1## where R and R' are substituted groups, for example hydrocarbon groups such as alkyl, aryl, cycloalk... | 11/29/1983 |
| 4416668 | Antistatic agents for organic liquids This invention relates to imides of -olefin-maleic copolymers and to blends of imides of -olefin-maleic copolymer and -olefin-sulfur dioxide copolymers; and to systems, such as hydrocarbon fuels, containing such compositions as antist... | 11/22/1983 |
| 4414035 | Method for the removal of asphaltenic deposits This invention relates to the removal of organic deposits containing asphaltenic compounds from surfaces with hydrocarbon-substituted arylsulfonic acids such as alkaryl sulfonic acids; a composition comprising a mixture of: (1) an aromatic hydrocarbon, an... | 11/08/1983 |
| 4411814 | Use of polyamines as demulsifiers This invention relates to the use of polyamines and/or polyamine salts, preferably those having 20 or less amino groups, as demulsifiers. This invention is particularly useful in breaking emulsions formed in surfactant flooding of oil bearing subterranean... | 10/25/1983 |
| 4410446 | Zinc oxide dispersions by decomposition of zinc acetate This invention relates to stable, fluid zinc-containing dispersions and the preparations thereof by the high temperature decomposition of zinc acetate to ZnO in a dispersant-containing fluid, said dispersant being stable at the temperature of decompositio... | 10/18/1983 |
| 4409151 | N,N-Dimethylene phosphonic acids of alkylene diamines This invention relates to a process of preparing N,N'-disubstituted methylene phosphonic acids by reacting ,ω-alkylene diamines with essentially 2 equivalents of formaldehyde and phosphorus acid based on replaced nitrogen-bonded hydrogens. This in... | 10/11/1983 |
| 4404112 | Hydrocarbon foams as well stimulants This invention relates to the use of silicone-induced hydrocarbon foams as well stimulants, for example as illustrated by their use in fracturing well formations, removal of paraffin in wells, removal of condensate hydrocarbons from blocked gas wells, etc... | 09/13/1983 |
| 4402818 | Electrofiltration system for purifying organic liquids Non-petroleum organic liquids (fats, animal and vegetable oils, etc.) containing solids (e.g., hydrogenation catalysts) are purified within a unique electrofiltration system wherein the organic liquids are passed through a selected bed material in which i... | 09/06/1983 |
| 4396417 | Non-Newtonian agricultural formulations Thixotropic high internal phase ratio emulsions containing biologically active agents including biocides, insecticides, fungicides, herbicides, defoliants, desiccants, seed disinfectants, growth regulators, etc., which are useful, for example, in agricult... | 08/02/1983 |
| 4395318 | Pitting corrosion meter Test, auxiliary and reference electrodes are immersed in a corrodant fluid. The test electrode is cathodically polarized by a cathodic polarization circuit. Peak current flow in the auxiliary electrode is measured and a linear cathodic polarization functi... | 07/26/1983 |
| 4393026 | Compounds containing sulfur and amino groups This invention relates to the following: (a) An amino-containing composition characterized by polymercapto groups, (2) A polyamino-containing composition characterized by mercapto or polymercapto groups, (3) A composition characterized by the presence of A. a merca... | 07/12/1983 |
| 4388452 | Olefin-acrylonitrile copolymers and uses thereof This invention relates to -olefin-acrylonitrile copolymers and uses thereof, particularly as antistatic agents in organic liquids such as hydrocarbon fuels.... | 06/14/1983 |
| 4387074 | Polyols of tetrahydropyrimidines as corrosion inhibitors Methylol derivatives of 2,3,4,5-tetrahydropyrimidines and to uses thereof, particularly as corrosion inhibitors.... | 06/07/1983 |
| 4383926 | Process of demulsifying and/or clarifying aqueous systems with azetidinium polymers This invention relates to N,N-diallyl-3-hydroxy azetidinium salts, homo- and co-polymers thereof; and the preparation thereof. This invention also relates to the use of the above polymers as demulsifiers.... | 05/17/1983 |
| 4383438 | Fouling test apparatus A fouling test apparatus comprising a cylindrical pressure vessel, means for controlling the temperature of fluid contained in the vessel, cylindrical probe having a metallic surface concentric with the vessel walls and provided with a heater for such sur... | 05/17/1983 |
| 4382874 | Organo zirconium complexes This invention relates to a composition comprising an O/W demulsifier and a zirconium compound, and to the use thereof as an O/W demulsifier. The O/W demulsifier contains amino groups, preferably in quaternary form. The zirconium compound is believed to c... | 05/10/1983 |
| 4376708 | Flotation processes using ureylenes This invention relates to ureylene prepared by reacting an oxyalkylated polyamine with urea and to uses of such ureylene for example in removing oils, solids, and combinations thereof from aqueous systems, etc.... | 03/15/1983 |
| 4375528 | Water soluble oil modified imidized polyesters This invention relates to (1) water soluble and/or dispersible compositions characterized by the presence of oil modified imidized polyesters; and to (1) which also contains curable resins. This invention also relates to a wide variety of uses for such co... | 03/01/1983 |
| 4374724 | Plural stage desalting/dehydrating apparatus A desalter/dehydrater having a plurality of electrified coalescing stages in a single vessel wherein the stages are isolated hydraulically to allow parallel or serial stage operation and the emulsion being treated is introduced at one side of the vessel a... | 02/22/1983 |
| 4372775 | Inhibition of microbiological growth with thiazine quaternary ammonium salts of polyepihalohydrin This invention relates to thiazine quaternary ammonium salts of polyepihalohydrin and the preparation and uses thereof. The compositions are ideally expressed by the polymer unit ##STR1## where Z is S, SO, or SO2, R is hydrogen or a hydroc... | 02/08/1983 |
| 4372837 | Radial flow electrofilter A radial flow electrofilter having a plurality of parallel planar horizontal electrodes. The filter may be provided with backflush means, in which case the filter medium preferably consists of non-deformable particles, or else a removable filter pack, pre... | 02/08/1983 |
| 4371497 | Inhibition of corrosion with thiazine quaternary ammonium salts of polyepihalophydrin This invention relates to thiazine quaternary ammonium salts of polyepihalohydrin and the preparation and uses thereof. The compositions are ideally expressed by the polymer unit ##STR1## where Z is S, SO, or SO2, R is hydrogen or a hydroc... | 02/01/1983 |
| 4371398 | Polishes/polish restorers This invention relates to the use of polyolefins as protective coatings and/or restorers, preferably applied as an emulsion. This invention also relates to a system of floor care employing such polyolefin emulsions to maintain and/or restore floor finishes. Th... | 02/01/1983 |
| 4371434 | Degasser-dehydrator An apparatus for dehydrating and degassing oil-continuous emulsions containing gases and a dispersed aqueous phase comprising a treating vessel provided with a combined distributor-degasser having an inverted trough with orifices along the sides and with ... | 02/01/1983 |
| 4368137 | Polymers of oxyalkylated piperazines and uses thereof This invention relates to polymerized oxyalkylated piperazines, to the salts and quaternaries thereof; and to uses thereof for example as demulsifiers, flotation aids, etc.... | 01/11/1983 |
| 4364925 | Unitized animal food system product A simultaneously compacted, shaped, molded and unitized, self-contained, unit-integral, chew-resistant animal food system product containing animal food and structure-supporting fibers, preferably in a fibrous form, in an amount sufficient to make said pr... | 12/21/1982 |
| 4361555 | -1,4-Thiazine alkanephosphonic acids This invention relates to -1,4-thiazine alkanephosphonic acids; and to the preparation and uses thereof.... | 11/30/1982 |
| 4358382 | Use of quaternized derivatives of polymerized pyridines and quinolines as water clarifiers This invention relates to alkylated derivatives of polymerized aromatic nitrogen heterocyclic compounds as illustrated by polymerized pyridine, quinoline and derivatives thereof; and uses thereof. These compositions are polymerized by treating said aromatic ni... | 11/09/1982 |
| 4356002 | Anti-static compositions This invention relates to use of surfactants, such as demulsifiers as illustrated by oxyalkylated phenol-aldehyde resins, as antistatic agents in organic fluids such as hydrocarbon fuels. These surfactants are also capable of synergistically enhancing the... | 10/26/1982 |
| 4354945 | Clarification process with thiazine quaternary ammonium salts of polyepihalohydrin This invention relates to thiazine quaternary ammonium salts of polyepihalohydrin and the preparation and uses thereof. The compositions are ideally expressed by the polymer unit ##STR1## where Z is S, SO, or SO2, R is hydrogen or a hydroc... | 10/19/1982 |
| 4354025 | N,N'-Disubstituted hexahydropyrimidines This invention relates to hexahydropyrimidines prepared by condensing cyclohexanone, or derivatives thereof, with ammonia to yield tetrahydropyrimidines, which can be reduced to hexahydropyrimidines, whose pyrimidine ring can be broken to yield diamines h... | 10/12/1982 |
| 4351703 | Cathodic protection monitoring Cathodic protection monitoring of large metallic structures receiving cathodic current from a remote anodic electrode. Exposed to the cathodic current, closely adjacent the metallic structure, is a metallic specimen with a surface area of less than one-te... | 09/28/1982 |
| 4348287 | Zirconium compounds as flotation aid This invention relates to the use of zirconium compounds and complexes thereof as flotation aids in a wide variety of systems.... | 09/07/1982 |
