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| Number | Title | Issue Date |
| 4863593 | Battery powered vacuum unit Battery powered vacuum unit, useful for suction filtration of water samples in the field. The vacuum unit comprises a miniature piston type air suction pump, driven by a small direct current (DC) motor which in turn is powered by a battery or other 12 vol... | 09/05/1989 |
| 4826635 | Composition and a process for the preparation of (hydroxy (organosulfonyloxy)iodo)arenes and their use in a regiospecific synthesis of diaryliodonium salts [Hydroxy(organosulfonyloxy)iodo]arenes are synthesized in neutral organic solvents by the reaction of ring-subsituted [hydroxy(organosulfonyloxy)iodo]benzenes with iodoarenes via ligand transfer. The produced compounds are reacted with (triorganosilyl) ar... | 05/02/1989 |
| 4781921 | Hydrogels of quadrol methacrylate polymers Acrylate and methacrylate monoesters and diesters having the following formula (I) ##STR1## wherein R1, R2, R3 are as defined in the specification, are disclosed. These monomers are polymerizable into hydrogel polymer... | 11/01/1988 |
| 4778825 | Macrophage stimulation by quadrol Quadrol has been found to stimulate macrophage activity in warm blooded animals. As a consequence, Quadrol may be used to combat bacterial infection, remove degenerated tissue, and promote new tissue growth. Quadrol may be applied topically, e.g., as the ... | 10/18/1988 |
| 4599384 | Novel EPDM-isobutylene graft copolymers Macromonomers of polymer-dicyclopentadiene and polymer-ethylidenenorbornene are prepared and then terpolymerized with ethylene and propylene. The terpolymer exhibits compatibilization of ethylene-propylene rubber and butyl rubber, and thus is useful as a ... | 07/08/1986 |
| 4568732 | Continuous telechelic polymer process Novel telechelic halogenated polymers of cationically polymerized olefin monomers are formed carrying from 2 to about 6 terminal halogens by a continuous polymerization method. The continuous polymerization method being achieved by feeding to a stirred re... | 02/04/1986 |
| 4513137 | Iodonium salts Mono- or bis(iodonium salts) are produced in neutral organic solvents by the reaction of an [hydroxy (organosulfonyloxy)iodo]arene with a bis(triorganosilyl)arene, a bis(trihalosilyl)arene, or with a mono- or bis(triorganosilyl)heterocyclic compound, or a... | 04/23/1985 |
| 4502942 | Enhanced oil recovery from western United States type oil shale using carbon dioxide retorting technique A retort process and product therefrom relating to the recovering of oil from Western-type U.S. shale utilizing carbon dioxide as a sweep gas. Other contributing factors with regard to increase in recovery include the heating rate, the sweep gas rate, par... | 03/05/1985 |
| 4442261 | Cationically polymerizable macromolecular monomers and graft copolymers therefrom The method and production of macromolecular monomers from cationically polymerizable monomers and vinyl-substituted hydrocarbon halides is disclosed. These cationically polymerizable monomers may react in the presence of a catalyst with the hydrocarbon ha... | 04/10/1984 |
| 4429099 | Phenol terminated polymers and epoxies therefrom The invention sets forth novel telechelic (terminally functional) prepolymers which may be reacted to form curable epoxides. On account of the incorporation of saturated elastomer chains into the prepolymers improved epoxides arise having increased moistu... | 01/31/1984 |
| 4370392 | Chrome-halogen energy storage device and system A hybrid redox-halogen energy storage device and system has a housing divided into two chambers by an anionic membrane. One chamber has an inert negative electrode in an electrolyte solution containing chromium ions. The remaining chamber has an inert pos... | 01/25/1983 |
| 4348525 | Composition and a process for the preparation of [hydroxy(organosulfonyloxy)iodo]arenes and their use in a regiospecific synthesis of diaryliodonium salts [Hydroxy(organosulfonyloxy)iodo]arenes are synthesized in neutral organic solvents by the reaction of ring-substituted [hydroxy(organosulfonyloxy)iodo]benzenes with iodoarenes via ligand transfer. The produced compounds are reacted with (triorganosilyl) a... | 09/07/1982 |
| 4342849 | Novel telechelic polymers and processes for the preparation thereof Novel telechelic olefin and hydroxy polymers particularly those of polyisobutylene are prepared according to the process set forth herein. Preparation of a telechelic diolefin polyisobutylene includes the steps of refluxing a solution of telechelic dihalo... | 08/03/1982 |
| 4327201 | Cationically polymerizable macromolecular monomers and graft copolymers therefrom The method and production of macromolecular monomers from cationically polymerizable monomers and vinyl-substituted hydrocarbon halides is disclosed. These cationically polymerizable monomers may react in the presence of a catalyst with the hydrocarbon ha... | 04/27/1982 |
| 4316973 | Novel telechelic polymers and processes for the preparation thereof Novel telechelic olefin and hydroxy polymers particularly those of polyisobutylene are prepared according to the process set forth herein. Preparation of a telechelic diolefin polyisobutylene includes the steps of refluxing a solution of telechelic dihalo... | 02/23/1982 |
| 4276394 | Novel telechelic polymers, block copolymers and processes for the preparation thereof Novel telechelic halogenated polymers of cationically polymerizable olefin monomers are formed carrying from 2 to about 6 terminal halogens. The telechelic halogenated polymers are formed by reacting the monomer with an initiator transfer agent, carrying ... | 06/30/1981 |
| 4213134 | Circuit and method for the recorder display of high frequency periodic signals A circuit and method for the display of a high frequency periodic signal on a display (21) having a maximum response frequency less than the periodic signal frequency includes a signal period counter (12) for counting the number of periods in the high fre... | 07/15/1980 |
| 4181971 | Apparatus for presenting a sequence of fixed pictures Disclosed is a device which can utilize, as an input signal, the solution to mathematical problems from an analog computer or which can be used directly with a process that is governed by a mathematical problem to pictorially depict the solution to the pr... | 01/01/1980 |
| 4180692 | Method for reacting organic halides A method for carrying out reactions of the Friedel-Crafts type, such as alkylation, acylation, polymerization, sulfonylation and dehydrohalogenation. The reactions are catalyzed by arene-metal tricarbonyl complexes and when the reaction vessel contains ar... | 12/25/1979 |
| 4136136 | Graft copolymers of hydrocarbons and small ring heterocyclic compounds and process for the preparation thereof Disclosed are novel graft copolymers comprising hydrocarbon backbones and polymerized small ring heterocyclic compounds. The backbones are devoid of O, N or S in the main chain and include SBR, polybutadiene, butyl rubber, neoprene, EPDM, EPM, PVC, and th... | 01/23/1979 |
| 4108945 | Star polymers and process for the preparation thereof Disclosed is a series of star polymer products having at least three polymeric arms which radiate from a nucleus having at least two molecules of a linking compound. The polymeric arms may be copolymers of conjugated dienes and monovinyl aromatic compound... | 08/22/1978 |
| 4091236 | Automatically tunable notch filter and method for suppression of acoustical feedback Disclosed is an automatically tunable notch filter and method for suppression of acoustical feedback in an audio signal. The apparatus includes a selectively tunable notch filter having a center frequency which is variable over at least a substantial port... | 05/23/1978 |
| 4087798 | Device and method for determining the presence of resonant materials A spectroscopic refractometer has a plurality of resonant cavities through which the environment to be sampled may pass, including a first resonant cavity constructed and tuned to resonate at a transition frequency of the resonant material of interest and... | 05/02/1978 |
| 4038324 | Method for reacting organic halides A method for carrying out reactions of the Friedel-Crafts type, such as alkylation, acylation, polymerization, sulfonylation and dehydrohalogenation. The reactions are catalyzed by arene-metal tricarbonyl complexes and when the reaction vessel contains ar... | 07/26/1977 |
| 4020127 | Bigraft copolymers and process for the preparation thereof Disclosed is a novel bigraft copolymer comprising a polyhydrocarbon backbone selected from the class consisting of aromatic homopolymers, saturated and unsaturated hydrocarbon homopolymers, such homopolymers having halogen functionality and copolymers and... | 04/26/1977 |
| 3985830 | Star polymers and process for the preparation thereof Disclosed is a series of star polymer products having at least three polymeric arms which radiate from a nucleus having at least two molecules of a linking compound. The polymeric arms may be copolymers of conjugated dienes and monovinyl aromatic compound... | 10/12/1976 |
| 3984483 | Method for reacting organic halides A method for carrying out reactions of the Friedel-Crafts type, such as alkylation, acylation, polymerization, sulfonylation and dehydrohalogenation. The reactions are catalyzed by arene-metal tricarbonyl complexes and when the reaction vessel contains ar... | 10/05/1976 |
| 3979774 | Digital control system and method for the synchronization of audio-visual equipment Disclosed is a digital control system and method for synchronizing audio-visual equipment for the presentation of film slides with corresponding sound narrations. As the film passes through conventional projecting equipment each slide receives a sequentia... | 09/07/1976 |
| 3946072 | Method for reacting organic halides A method for carrying out reactions of the Friedel-Crafts type, such as alkylation, acylation, polymerization, sulfonylation and dehydrohalogenation. The reactions are catalyzed by arene-metal tricarbonyl complexes and when the reaction vessel contains ar... | 03/23/1976 |
| 3933752 | Method for reacting organic halides A method for carrying out reactions of the Friedel-Crafts types, such as alkylation, acylation, polymerization, sulfonylation and dehydrohalogenation. The reactions are catalyzed by arene-metal tricarbonyl complexes and when the reaction vessel contains a... | 01/20/1976 |
