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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 5815946 | Method for dehydrating wet coal A process is described whereby wet coal may be dehydrated and inhibited against rehydration by immersing in a bath of molten paraffin hydrocarbon for a sufficient period of time to evaporate and expel inherent water from the coal. The hydrocarbon then inh... | 10/06/1998 |
| 5540788 | Method of preparing iron-phosphate conversion surfaces The present invention provides for forming an iron-phosphate conversion surface, or an iron-phosphate bi-metallic surface on metals, in situ, in internal combustion engines, pumps, hydraulic systems, compressors and other mechanical equipment and machiner... | 07/30/1996 |
| 5534207 | Method and apparatus for forming an article from recyclable plastic materials A method for forming an article from recyclable plastic materials includes progressively heating thermoplastic solid particles simultaneously with mixing, melting and conveying the particles, prior to delivery of molten material to an extruder. The proces... | 07/09/1996 |
| 5530972 | Emergency eyewash fountain An eyewash fountain, particularly useful in industrial and laboratory environments, includes a pair of spray heads mounted on a distribution arm that is connected to a valve. The valve has a rotatable body that is connected to a base by a reversible retai... | 07/02/1996 |
| 5503180 | Valve having easily replaceable seat A valve has a seat that is replaceable without disassembly of the bonnet from the body or removal of the stem and closure member. The seat is maintained in a fixed position within the body of the valve by a single retainer member that is readily separable... | 04/02/1996 |
| 5501453 | Pretensioned golf club head A golf club head for drivers and fairway wood configurations having a planar face and two rear projections which extend rearwardly from the face of the golf club head is described to allow an adjustment of compression characteristics by changing the tensi... | 03/26/1996 |
| 5485966 | Remotely controlled chopping machine for tank cleaning A chopping machine comprises a frame and a plurality of detachable components which may be individually insertable through an entryway into a storage tank to be cleaned. The detachable components include traction drive belts and a chopping assembly. Hydra... | 01/23/1996 |
| 5468835 | Polyetherpolyurethane end caps for oil filters A new polyetherpolyurethane system for the formation of end caps for oil filters is disclosed using a blended oxyalkylene polyol having a functionality greater than 2 and the absence of any oxyethylene component. The blend having a functionality greater t... | 11/21/1995 |
| 5460331 | Apparatus for dispersion of sludge in a crude oil storage tank An apparatus for cleaning the interior of storage tanks of the type used for storing large volumes of crude oil wherein hydrocarbon sludge accumulates with the passage of time. The apparatus comprises a crude oil circulator having rotatable nozzles positi... | 10/24/1995 |
| 5445601 | Back support device having bands securing the support plate A lower back support device for use in applying force to the lumbar vertebrae of the human spinal column. The device has a support plate attached to a pair of inner bands, for encircling the wearers' body to position the support plate. It also has a one-p... | 08/29/1995 |
| 5431236 | Method for processing solid material for disposal in an underground porous formation A method for processing solid materials for disposal in an underground porous formation includes separating an initial slurry mixture into predefined components, and then continually classifying, shearing, recirculating and diluting the separated componen... | 07/11/1995 |
| 5425814 | Method for quick turnaround of hydrocarbon processing units A quick cleaning method for hydrocarbon processing is described which avoids using the time honored steamout as a cleaning step by isolating the equipment to be cleaned from the rest of the hydrocarbon processing units, establishing a circulation loop and... | 06/20/1995 |
| 5417392 | Hydraulic switch stand with rail pump charging and hydraulic lock The present invention relates to a hydraulic apparatus for moving railroad switch points from side-to-side. The apparatus has a hydraulic cylinder operatively connected to the switch points to move the switch points from side-to-side in fluid communicatio... | 05/23/1995 |
| 5406019 | Oil spill recovery system The present invention is used in response to petroleum related spills in the environment. The hydrocarbon materials can be removed from any substrate, particularly ice or beach sand, by impinging in two separate fluid streams, a formable surfactant/emulsi... | 04/11/1995 |
| 5403145 | Street legal, mobile, truck mounted tube bundle pulling apparatus The invention relates to a street legal mobile mounted tube bundle pulling apparatus which is moveable from a lifting position to a travelling position. A longitudinal track is attached to the bed of the vehicle. A sled which is contiguous with said track... | 04/04/1995 |
| 5389156 | Decontamination of hydrocarbon process equipment Contamination can be removed from equipment of a chemical processing flow path by pumping through the plant an aqueous solution at an elevated temperature of an extractant, such as terpene, and a surfactant mixture which traps contaminants for disposal in... | 02/14/1995 |
| 5381567 | Mobile emergency eyewash and body splash apparatus Disclosed is an a mobile emergency eyewash and bodysplash apparatus for delivering water for cleaning chemical irritants from eyes or skin. The apparatus includes a water tank housing which holds a water tank. A second housing contains a drench nozzle and... | 01/17/1995 |
| 5367214 | Submersible motor protection apparatus A protective device for a fluid-filled submersible electric motor powering a downhole pump in a well bore disposed between the motor and pump and forming a sealed assembly with the motor is described. The upper interior portion of the device is sealed to ... | 11/22/1994 |
| 5356482 | Process for vessel decontamination An improved process for the decontamination of process equipment and vessels is described wherein an extractant material for the contaminant and a surfactant are vaporized, heated with steam, to condense on the internal surfaces of the vessel to trap cont... | 10/18/1994 |
| 5315801 | Triangulated frame supported flat cover The invention is directed to a cover which is supported or suspended from a self-supporting, open air framework constructed over a vessel. The cover is sealed to the vessel.... | 05/31/1994 |
| 5310419 | Method of preparing inorganic polymeric water complexes and products so produced The present invention provides aqueous processes which create new chemical compositions of matter prepared by reacting, in the presence of aqueous ammonia or other source of reactive NH2 groups, an alkali metal hydroxide to raise pH above 12, a... | 05/10/1994 |
| 5290528 | Process for removing arsenic from soil An invention for removing arsenic from contaminated soil is described. The process of this invention involves contacting contaminated soil with a carbonated solution either formed by bubbling carbon dioxide through water or dissolving in alkali metal carb... | 03/01/1994 |
| 5257653 | Ejector pull away system and apparatus The invention is directed to a safety release disconnection for a fluid conduit. The connection includes a pin and a U-shaped slot with an ejector spring adjustably biased by a loading nut. Check valves are provided in both connection elements and are ope... | 11/02/1993 |
| 5254750 | Removal of guaiacol from cresylic acid by heating with a strong base A process is described for the removal of guaiacol and substituted guaiacols from naturally occurring cresylic acid feed by heating the feed with a strong base, particularly sodium hydroxide, to produce a purified cresylic acid product essentially free of... | 10/19/1993 |
| 5209302 | Semi-active heave compensation system for marine vessels A semiactive heave compensation system for marine vessels, especially floating offshore drilling rigs, is described. The system can be installed in its entirety or can be used to modify existing passive systems by including heave and compensating sensors ... | 05/11/1993 |
| 5091016 | Method for dispersing sediment contained in a storage tank A method and apparatus for cleaning the interior of storage tanks of the type used for storing large volumes of liquids, such as crude oil, wherein hydrocarbon sludge accumulates with the passage of time, such apparatus comprising a hollow housing, liquid... | 02/25/1992 |
| 4956325 | Method of impregnating a support material The present invention is directed to impregnating a support material with a metal phthalocyanine oxidation catalyst dissolved in monoethanol amine. More specifically, the invention is directed to the method of impregnating a catalyst support such as carbo... | 09/11/1990 |
| 4945577 | Ventilated splash goggle A protective splash goggle which includes a new two piece labyrinthian vent which allows the circulation of air while preventing the passage of splashed liquids and further including a curved lens which includes a lens mounting providing functional gaps w... | 08/07/1990 |
| 4935002 | Apparatus and method for the autotransfusion of blood Autotransfusion apparatus and methods are disclosed for collecting, processing and returning blood to a patient during or after surgery. The processing step of the autotransfusion system comprises sequential rough filtering and filtering of the blood. Fil... | 06/19/1990 |
| 4908845 | Audio/telephone communication system for verbally handicapped In one exemplary embodiment, an audio/telephone communication system for verbally handicapped individuals is disclosed that comprises a programmed computer, and a matrix of touch-sensitive contacts carrying an overlay removably attached thereto and symbol... | 03/13/1990 |
| 4817653 | Tank cleaning, water washing robot A water washing robot having features uniquely useful in cleaning the interior of oil storage tanks and which comprises components that can be independently moved inside a storage tank and conveniently assembled therein. The assembled robot comprises a fr... | 04/04/1989 |
| 4805653 | Mobile articulatable tube bundle cleaner An essentially self-contained mobile tube cleaning machine which is remotely operable so that there is no need for operating personnel to be in close proximity to cleaning nozzles or other high pressure lines during tube cleaning operations. As a conseque... | 02/21/1989 |
| 4785420 | Audio/telephone communication system for verbally handicapped In one exemplary embodiment, an audio/telephone communication system for verbally handicapped individuals is disclosed that comprises a programmed computer, and a matrix of touch-sensitive contacts carrying an overlay removably attached thereto and symbol... | 11/15/1988 |
| 4769928 | Martial arts shoe and sole A martial arts shoe and sole are provided. The shoe comprises in combination an upper with a sole, and may also include a cushion insert interposed between at least a portion thereof. The sole comprises a heel member including distal traction plates, a pl... | 09/13/1988 |
| 4666365 | Tube bundle pulling apparatus A device and method for removing and reinstalling tube bundles from and into heat exchanger shells. The device features a portable base with a pivotally mounted vertical telescoping column. A bundle support member is movably attached to one side near the ... | 05/19/1987 |
| 4666689 | Process for regenerating an alkaline stream containing mercaptan compounds An alkaline solution containing mercaptides is regenerated in an improved process wherein the alkaline solution to be regenerated containing a suitable oxidation catalyst is contacted with an oxygen-containing solvent which is immiscible with said alkalin... | 05/19/1987 |
| 4660800 | Bridge overhang bracket and hanger A hanger and bracket attached to the hanger for supporting formwork for steel and concrete during the curing stage of a bridge deck overhang is described. A hanger attached to the beam of the bridge supports a connector carrying the bracket. The connector... | 04/28/1987 |
| 4575305 | Truck mounted tube bundle pulling apparatus The apparatus for removing and reinserting tube bundles into heat exchanger shells features an over the road vehicle having a bed. A vertical telescoping column is rotatably mounted to the rear of the bed. A bundle support member having a longitudinal axi... | 03/11/1986 |
| 4473968 | Predator control device A trigger actuated device to expel a poison into the mouth of a predatory animal in response to the predatory animal attempting to remove bait from the trigger mechanism. The poison is expelled from a barrel by a pushrod driven by the detonation of a prim... | 10/02/1984 |
| 4002598 | Polyether urea epoxy curing agent An improved curable epoxy resin composition of a vicinalpolyepoxide and an effective amount of a novel polyether urea curing agent is disclosed. The improved curable epoxy resins which are useful as coatings, castings, sealants, and adhesives show improve... | 01/11/1977 |
