Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7507374 | Saliva sample testing device In a lateral test flow immunoassay device, a saliva sample and a buffer solution are delivered into a mixing chamber to mix with a second reagent. The resulting test mixture is allowed to incubate for a pre-determined period of time and then selectively delivered to... | 03/24/2009 |
| 7507373 | Assay device for the testing of fluid samples An assay device for testing of liquid samples for drugs of abuse has a transparent container for retaining a liquid sample. A backing member is within the container and is curved so that its front surface corresponds to the curvature of the container wall. Immunoass... | 03/24/2009 |
| 7004442 | Mold frame for a mold A mold frame for an apparatus for producing shaped concrete articles has two longitudinal and two transverse frame members which are detachably screwed to one another with form-fit on the four corners of the rectangular mold frame. The transverse frame members on th... | 02/28/2006 |
| 6915919 | Container closure cap with self-sealing slot A container for retaining a liquid sample to be tested is closed by a removable closure cap having a slot therein to receive a flat rectangular panel test card member inserted through the slot into the container. A flexible resilient member is mounted adjoining to t... | 07/12/2005 |
| 6843461 | Mold for producing depressions in the sides of a molded block The side walls of a mold have recesses in each of which is mounted a mold core for forming depressions on the outer side of a concrete block which is to be produced in this mold. The mold cores are pivotally supported around a horizontal axis which is parallel to th... | 01/18/2005 |
| 6406922 | Device for the testing of body fluid samples A drug of abuse test kit for testing low volumes of a fluid sample having a transparent flat bag container for retaining a fluid sample to be tested and the open end of the container has a recloseable closure. The container is maintained in a substantiall... | 06/18/2002 |
| 6402499 | Vibration drive A vibration drive particularly suited for a mold for producing concrete molded bodies comprises of at least one piezoelectric vibration exciter which is fixedly attached onto the mold. The vibration exciter comprises a housing in which an unbalance mass i... | 06/11/2002 |
| 6403383 | Diagnostic test kit for immunological assays of fluid samples A diagnostic test kit has a cup-like container for retaining a fluid sample to be tested and the open top end of the container is closed by a closure cap on the open end. There is a slit in the closure cap to receive a multiple test card having a pluralit... | 06/11/2002 |
| 6372515 | Device for the testing of fluid samples and process for making the device A test card for drugs of abuse has a thin flat member having the size and shape of a business card. A plurality of immunoassay test strips extend longitudinally from top to bottom at the card and are fastened side by side in parallel on one or both sides ... | 04/16/2002 |
| 6342750 | Vibration drive for a mold The vibration drive for a mold for producing concrete mold bodies has four piezoelectric vibration exciters which are located in the four corner areas of a vibrating table of a molding machine and connected to the machine frame. A vertically movable mold ... | 01/29/2002 |
| 6216378 | Photo-frame postcard structure and product A photo-frame postcard structure and product consisting of two superimposed layers, whereby one side of the structure has an adhesive area for the association of a photographic reproduction thereon and the other side of the structure has pre-printed postc... | 04/17/2001 |
| 6032973 | Trailer hitch with telescoping guide A trailer hitch has both horizontal and vertical pivoting connections between a towing vehicle and a trailer and is further provided with a telescoping alignment bar to facilitate connection of the towing vehicle to the trailer hitch.... | 03/07/2000 |
| 5976895 | Device for the collection, testing and shipment of body fluid samples A drug abuse test kit has a transparent cup-like container for retaining a fluid sample to be tested and the open top end of the container is closed by an inner closure insert seated within the open end. There is a slit in the inner closure insert to rece... | 11/02/1999 |
| 5895620 | Process for encapsulating an electronic component Process for encapsulating an electronic component, in particular an integrated circuit, with an encapsulating material, at least comprising the steps of: placing the component to be encapsulated in a cavity of a mold; introducing the encapsulating material at ... | 04/20/1999 |
| 5869758 | Method and apparatus for measuring the flow rate of a medium flow The flow rate of a medium flowing through a channel is measured by using a number of measurement sites along which the medium flows continuously at different velocities. The heating of the medium at the measurement site and the measurements of the tempera... | 02/09/1999 |
| 5846576 | Apparatus for the production of shaped bricks The mold for the production of concrete shaped bricks has several mold cavities, which are filled with free-flowing concrete. To produce recesses in the interior or on the outer sides of the shaped brick, to each mold cavity there correspond one or more m... | 12/08/1998 |
| 5770244 | Mold for the production of shaped bricks A mold, for the production of concrete shaped bricks having one or more inclined side walls, has an inclined side wall which together with the opposed vertical mold side wall diverges upwardly to form an angle that is opened upwardly, the inclined side wa... | 06/23/1998 |
| 5732658 | Stable provided with manure collection pit with V-shaped bottom, and method for reducing ammonia emission Stable (1) comprising a collection chamber (6) with a bottom (7) below a stable grid. The bottom (7) is covered by a bottom plate (9) formed by parallel V-shaped gutters (10). The walls of the gutters (10) form an angle with the horizontal, which is betwe... | 03/31/1998 |
| 5732788 | Golf vehicle The golf vehicle has steerable front wheels on a front portion of a frame together with a steering mechanism which includes an upstanding rearwardly inclined handle bar. A pair of drive wheels and a power source drivingly connected to the drive wheels are... | 03/31/1998 |
| 5733113 | Downhole roller vane motor and roller vane pump A roller vane motor for downhole drilling comprises a housing and a rotor. The housing contains outlet ports and wing deflector cams that divide the space between housing and rotor into chambers. The rotor is provided with recesses in its periphery and th... | 03/31/1998 |
| 5728021 | Transmission chain for a cone pulley transmission Transmission chain for a cone pulley transmission with links, coupled by pins, engaging the cone pulley surfaces, and by elongate each link accommodating, non-rotatable with respect to it, a pin and, in the longitudinal dimension of the link at a distance... | 03/17/1998 |
| 5713246 | Method for fixing an energy-storing flywheel with pretension on a support and unit comprising an energy storing flywheel Method for applying an energy-storing flywheel (2) with pre-tension with an inner bore on a coaxial support (16) rotating symmetrically with the latter and having a tapering outer surface, in which a ring (22a, 22b, 22c, 22d) is placed in the flywheel bor... | 02/03/1998 |
| 5701698 | Trigger mechanism for firearms In a hammerless automatic pistol with double-action and single-action functions there are provided between the trigger arm and firing pin of the trigger mechanism a catch pawl for the firing pin and a support lever that maintains the catch pawl in the cat... | 12/30/1997 |
| 5669419 | Apparatus for the measurement and control of gas flow An electronic gas regulator is connected to a gas cylinder or other vessel to automatically measure and control the flow of gas to a desired application. Control and set up is accomplished through microprocessor based electronics, switches, sensors, encod... | 09/23/1997 |
| 5649383 | Barrel retaining device for firearms A barrel retaining device for an automatic pistol has a locking element that locks the pistol barrel and breech both of which are guided on the stock of the weapon. In order to remove the breech with the barrel from the stock in order to disassemble the p... | 07/22/1997 |
| 5634381 | Arrangement comprising a coupling flange A flange (6) for coupling a cylindrical element (4) to be driven at a high rotational speed with an inner, and coaxial, rotating axle (2), comprising a first cylindrical inner part (26) connected with the axle, and connected via a connecting part (12), to... | 06/03/1997 |
| 5628134 | Magazine retainer for a hand firearm A magazine retainer that is actuable on both sides of an automatic pistol is mounted to pivot in a recess of the stock of the pistol. The recess or the magazine retainer is molded during the injection molding of the stock. The magazine retainer is provide... | 05/13/1997 |
| 5622012 | Panel, and also a hinge section which is suitable, inter alia, for such a panel A panel for so-called sectional doors, in which a number of panels are hinged together by means of hinge parts which form part of the panel. Each panel consists of an elongated body part, which is formed by two side plates lying a distance apart and along... | 04/22/1997 |
| 5616357 | Process and apparatus for separating solid and liquid portions of crushed fruits A process to separate insoluble solid portions from soluble liquid materials of fruits with increased performance and yield using a press (7) wherein water, is first supplied to a mill for crushing the fruit. The soluble materials are then separated from ... | 04/01/1997 |
| 5596152 | Flow straightener for a turbine-wheel gasmeter Flow straightener for eliminating vortices in a gas stream through a flow tube. The flow straightener consists of a plate with a circular symmetric hole pattern, wherein the diameter of the holes is smaller than 0.1 times the diameter of the flow tube. Th... | 01/21/1997 |
| 5583386 | Safety circuit in electrically operated devices The invention discloses a safety circuit for electrically operated devices, which turns on the device in question, based on its position and design, only if handling and posture by the operator is completely correct and proper and the circuit, moreover, i... | 12/10/1996 |
| 5566524 | Coupling for compound profile members for doors or windows Several keys (A) are spaced along the profile (C), having opposite flanges, which are connected to the profiles by rotation. There is a key-shaped flange on one side (1) and a disc-shaped flange on the other (4), connected by a neck (3) with an intermedia... | 10/22/1996 |
| 5510125 | Process for selective removal of sugar from beverages To remove selectively particularly sugar from nonalcoholic or alcoholic beverages, first the sugar is either carried away in the permeate in a membrane separation unit (2) by suitable choice of membrane (4) or is retained in the retentate. Afterward, the ... | 04/23/1996 |
| 5507722 | Amputation cylinder dressing A flexible removable dressing for immediate post-operative application around a patient's amputation stump comprises a flexible cylindrical member enclosing a patient's amputation stump and a semi-rigid cup portion detachably connected to the bottom end o... | 04/16/1996 |
| 5498285 | Process for the synthesis of a layered, clay-like material as well as its use The invention relates to a process for the synthesis of a layered, clay-like material starting from a silicon oxide containing material in a finely divided state by reacting a glass phase containing material at a pH from 5 to 8, in the presence of water, ... | 03/12/1996 |
| 5496577 | Process for the production of a low-sugar, alcohol-free beverage A process for the production of a low-sugar, alcohol-free beverage comprises a desugarization process, which is upstream to a preliminary separation. Through the preliminary separation, the raw juice is divided into two streams (A,B), of which the first s... | 03/05/1996 |
| 5454205 | Leakproof filling station floor Method for constructing a filling station, having a number of storage tanks, one or more pump islands with a number of pumps on each pump island, and also lines, such as the lines for the supply of the necessary oil and petrol from the storage tanks to th... | 10/03/1995 |
| 5432982 | Clip for retaining together sheets of paper or other materials A clip for retaining together sheets of paper or other materials comprising a single thin strip of resilient sheet-like material bent upon itself to define an end fold and first and second holding legs each having first and second upper ends respectively ... | 07/18/1995 |
| 5433903 | Process for the control and regulation of the pressing process of a brick press A brick press for the production of formed bodies from free-flowing materials has a measuring and comparison device, in which pressing force and press path are detected from the beginning of the pressing process and are compared with a preset pressure cur... | 07/18/1995 |
| 5431854 | Method for pressing a plastic, which cures by means of a reaction, into a mould cavity, a pressing auxiliary in pill form to be used in this method and a holder composed of such material Method for pressing a plastic (6), which cures by means of a reaction, from a displacement chamber (4) via at least one injection channel (3) and a gate (2) to a mould cavity (1), said method at least comprising the following steps: pressurising the plast... | 07/11/1995 |
