Famous Patents
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.
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 |
| 4832231 | Dual beverage dispenser A dispenser of the coffee pot type for dispensing alternatively one or another beverage, such as coffee and decaffeinated coffee, includes a combined handle and lid unit and a two-compartment container. The dispensed liquid is manually selected by pushing... | 05/23/1989 |
| 4817769 | Hasp lock, zipper and cover assembly for portfolio The invention relates to a novel covered zipper assembly for the top of a portfolio with two heavy duty magnetic catches, one at each end thereof and being secured between the portfolio panels at the top to hide the zipper from view. A combination lock co... | 04/04/1989 |
| 4750644 | Dual beverage dispenser A dispenser of the coffee pot type for dispensing alternatively one or another beverage, such as coffee and decaffeinated coffee, includes a combined handle and lid unit and a two-compartment container. The dispensed liquid is manually selected by pushing... | 06/14/1988 |
| 4714143 | Handle and panel assembly for portfolio The invention relates to a novel handle and panel assembly in a zipper closed portfolio and in particular to an improved internally cushioned handle construction in which the inner seam of the handle is formed by sewing the front and back handle sections ... | 12/22/1987 |
| 4710979 | Mother's apron or bib with detachable multicolored two-dimensional infant toys to aid supervised baby play A sleeveless, preferably lined, apron of jacket length sewn together at the shoulders having a back panel of about the same length as the front panel with detachable multicolored two-dimensional cut out toys provided on the front so that the mother or bab... | 12/08/1987 |
| 4689828 | Protective device for hair stylist's fingers A finger protector for hair stylist's fingers, specifically useful to protect the inner first finger joint of the index and of the second finger of one hand from being pierced and cut by scissors used by the other hand during the cutting and styling of ha... | 09/01/1987 |
| 4628625 | Adjustable knockdown tray assembly An improved knockdown tray assembly which is capable of supporting heavier loads than the tray assembly of my companion co-pending patent application Ser. No. 639,045, using paperboard or cardboard trays and supporting members. The tray supporting members... | 12/16/1986 |
| 4618065 | Sanitary wash bottle kit two part closure A new two part closure for a sanitary wash bottle assembly comprising an inner multiple lobed elastomer plug and a sealing stopper. A dispensing tube passes through the inner plug and a bulb is positioned next to the neck of the flask of the wash bottle. ... | 10/21/1986 |
| 4600320 | Printer for producing both braille characters and printed characters A printer for producing both standard printed characters and braille characters on a recording medium comprising a platen having a cylindrical exterior recording medium surface, a braille embossing mechanism on the inside of the platen and the surface of ... | 07/15/1986 |
| 4597767 | Split leaflet heart valve A check valve for cardiac surgery and the like has a hollow valve body supporting spring biased split leaflets hinged for swinging movement from the base thereof between normally closed position and open position wherein the leaflets form a continuation o... | 07/01/1986 |
| 4595502 | Pile comprising a plurality of filter paper sheets with recesses If a plurality of essentially circular sheets of filter paper are stacked in a pile, the individual sheets have a tendency to stick to each other rendering it difficult to remove the topmost sheet from the pile. To overcome this inconvenience, it is provi... | 06/17/1986 |
| 4593825 | Adjustable knockdown tray assembly A knockdown tray assembly which is capable of supporting heavy loads, using paperboard or cardboard trays and supporting members. The tray supporting members are of a new construction and are formed of inverted U-shaped beams which are provided at the cen... | 06/10/1986 |
| 4579233 | Adjustable knockdown tray assembly A knockdown tray assembly comprising a plurality of horizontal rectangular trays made of paperboard or cardboard from a one-piece blank and supporting members formed by interfitting a T-beam bracing member over a comparable T-beam by the interfitting of a... | 04/01/1986 |
| 4562043 | Self-contained swab cartridge apparatus for detecting occult blood A tubular test device for testing occult blood in fecal matter using hydrogen peroxide in an ampoule and 3,3',5,5'-tetramethylbenzidine as the chromogen dissolved in chloroform to impregnate a cellulosic pledget which, when dried, is substantially colorle... | 12/31/1985 |
| 4546245 | Electronic controller A two hand operated instrument, for controlling electronic music synthesizers, video games and computers, capable of producing two independent control voltages, in addition to the signals produced by keyboards held in each hand, such additional control vo... | 10/08/1985 |
| 4513970 | Polymorphic twist puzzle A three dimensional puzzle or toy, of the type sold under the registered trademark RUBIK'S CUBE, in which eight outer bodies or blocks are rotated four at a time about any one of three axes, so that different shapes may be presented in different combinati... | 04/30/1985 |
| 4490252 | Electrostatic scale control apparatus for feed water having rotating helix responsive to water flow rate A magnetic apparatus comprising an electromagnetic coil surrounding a feed water inlet tube, having an electrical D.C. winding about the tube and a ferromagnetic helix closely fitting within the inside of the tube rotating in response to water pressure. T... | 12/25/1984 |
| 4486961 | Hair dryer Apparatus and process for blow drying hair in which the air is dehumidified by passing it through a special housing fitted with a moisture-absorbing filter insert placed ahead of the air which impinges against the hair. A regeneratable drying agent such a... | 12/11/1984 |
| 4485060 | Process for preparing dust-free particles A continuous process for carrying out the process for preparing substantially dust-free thermoset plastic particles from soft plastic mixtures of reactive thermoset plastic-forming materials and volatile components. These soft mixtures which quickly harde... | 11/27/1984 |
| 4469226 | Blister pack panel for face powder compact display Blister pack panel for face powder compact display in which the purchaser checks the color of the face powder to determine the suitability of that color for the personal preferance of the purchaser by opening the compact, the blister pack being of a speci... | 09/04/1984 |
| 4467725 | Continuous shelf storage system utilizing the gravity feed principle A continuous rack support apparatus utilizing the gravity feed principle and in which goods to be stored are supported on rolling vehicles comprises thrust rods which are formed as motional impulse generators and arranged so as to be longitudinally displa... | 08/28/1984 |
| 4460171 | Device for exercising the muscles determining body posture The device is composed of a rail adapted to be mounted on a wall and provided with a slider. A rocker arm pivotable against the action of a spring force is supported on the slider, a support adapted to be pressed against with the back of the head being mo... | 07/17/1984 |
| 4460551 | Process and device for manufacturing synthetic anhydrous calcium sulphate and pure hydrofluoric acid In the process for the production of synthetic anhydrite and pure hydrofluoric acid, a reaction is initiated using fluorspar with a mixture containing sulphuric acid, oleum and the reflux of the acidic scrubbing. The aim is to produce synthetic anhydrite ... | 07/17/1984 |
| 4428487 | Dual side wall locking attachment for trays to vertical legs in sectional display rack A sectional display rack comprising a novel construction of horizontal rectangular trays and support legs, each tray and leg formed of plastic, wherein both upper and lower sides on each tray bottom wall are formed with upstanding ribs defining a space be... | 01/31/1984 |
| 4422208 | Wire rope cleaning tool A wire rope cleaning tool adapted to be used against a bumper or stop which comprises a U-shaped guide for the rope to be cleaned. The tool includes a plurality of pie-shaped segments bolted between two washer-shaped apertured plates with one scraping bit... | 12/27/1983 |
| 4398097 | Automatic transfer switch An automatic transfer switch comprising a pair of molded case switches, a novel cam drive mechanism and a lever linkage is provided to assure a programmed timed sequence of contact transfer so that arc extinction is achieved in load transfer and re-transf... | 08/09/1983 |
| 4397071 | Method of installing replaceable sleeve in fixed vortex finder A method of installing a sleeve within an vortex finder of a cyclone separator to adjust the diameter of the vortex setting. To facilitate installation of the sleeve, the dish-shaped bottom of the cyclone is mounted on a plate which can be lowered and the... | 08/09/1983 |
| 4395598 | Electro-acoustic transducer causing sound waves to be in phase at any point by preventing reflection from the back end of the diaphragm to stress applying means The electro-acoustical transducer comprises a membrane flexible or rigid before assembling, the front portion of which has an aperture with a half-angle . In order to obtain sound waves in phase at any listening point, the front portion is the site... | 07/26/1983 |
| 4387460 | Supplementary information transmitting arrangement for a digital data transmission system This invention relates to an arrangement for transmitting a digital supplementary information signal having a low rate with a digital data signal having a high rate. The insertion of the supplementary information in the data signal is based on the modific... | 06/07/1983 |
| 4386439 | Bedspread A low-cost bedspread to permit fresh sheets and blanket to be fitted on the bed when the bedspread is removed, said bedspread comprising as the lining for the bedspread a fitted sheet having elastic strip material sewn to its lower edge adapting the encas... | 06/07/1983 |
| 4383622 | Sanitary washbottle kit assembly An improved sanitary washbottle kit assembly comprising a specially shaped molded two piece dispensing and sealing stopper equipped with a dispensing tube and resilient bulb adjacent the neck of the flask of the washbottle. The molded two piece dispensing... | 05/17/1983 |
| 4334434 | Ultrasonic flow rate meter Device for measuring the speed of a fluid in a tube which comprises two uasonic electro-acoustic transducers in the tube; means for energizing these transducers by first and second transmit pulse groups; means for receiving first and second receive pulse... | 06/15/1982 |
| 4002328 | Vise A vise is combined with a C clamp and the C clamp is fitted with at least 2 plug members fitting into receiving holes in the vise or in the C clamp, there being a larger number of holes than plug members whereby the C clamp, plugs and holes permit various... | 01/11/1977 |
