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 |
| 3987776 | Combustion chamber structure for a spark ignition engine A spark ignition engine of the carburetor single chamber type stratified charge combustion system wherein air and rich mixture are supplied successively by the same path, comprising a barrier arranged in the combustion chamber for directing the intake gas... | 10/26/1976 |
| 3986513 | Apparatus for irradiating the skin An apparatus for treating the skin of a patient by irradiating the patient with a light or heat source, particularly in the treatment of psoriasis, comprising: A. a base; B. a substantially horizontal support member mounted on said base; C. a first planar uppe... | 10/19/1976 |
| 3980646 | 3-Methylpyrazole-5-carboxylates and medicaments containing these compounds This invention relates to 3-methylpyrazole-5-carboxylates, to processes for the preparation of said compounds and to pharmaceutical compositions containing said compounds.... | 09/14/1976 |
| 3980836 | Toll restricting method and apparatus The invention is a toll restricting method and apparatus which restricts toll telephone calls from telephone stations by interrupting dialing sequences if from the station there is dialed (a) a restricted digit during a first predetermined number of digit... | 09/14/1976 |
| 3975373 | Cardioglycoside derivatives of the strophanthidin type, a process for their manufacture and medicinal preparations containing these compounds Cyclic acetals or ketals of cardioglycosides derived from k-strophanthidin or strophanthidol are more readily absorbed by the stomach and intestine than the parent cardioglycoside. The acetals are produced by reaction of the parent cardioglycoside, e.g., ... | 08/17/1976 |
| 3973722 | Tray-like container A tray-like container of a plastic coated paper blank having a base panel, which has four or more even numbers of side edges, side walls, corner portions, a peripheral portion extending along side walls and corner portions, and a pig-tail like folding lin... | 08/10/1976 |
| 3973543 | Apparatus for promoting a vaporization of a fuel for an internal combustion engine A vaporization promoting apparatus for an internal combustion engine is disclosed, in which at least one electrode is disposed in an intake manifold, and the electrode and the intake manifold are respectively connected to a high voltage generator which is... | 08/10/1976 |
| 3970062 | Arrangement for heating the suction gases of an internal combustion engine An internal combustion with an arrangement for heating the suction gases in order to promote the vaporization of the fuel contained within the suction gases is disclosed. In the arrangement, the exhaust gases exhausted from the engine are routed around fi... | 07/20/1976 |
| 3970060 | Fuel control apparatus A fuel control apparatus for controlling the flow amount of fuel delivered from a carburetor having a power circuit is disclosed, in which the fuel passage of the power circuit permits the fuel in a float chamber of the carburetor from flowing toward the ... | 07/20/1976 |
| 3970949 | High-frequency automatic gain control circuit A high-frequency automatic gain control circuit for a common emitter earthed amplifier wherein a hybrid negative feedback is applied to an input stage thereof from the emitter of an output stage transistor through a hybrid transformer connected to the bas... | 07/20/1976 |
| 3970015 | Automatic seaming method and long seamer therefor A long seamer for seaming garment sections automatically, which comprises a stationary working table, a sewing machine head, a patterning device and an endless flat belt, wherein the travelling passage of said flat belt is defined by a plurality of patter... | 07/20/1976 |
| 3967143 | Ultrasonic wave generator The ultrasonic wave generator of the present invention always drives a transducer with the resonant frequency fo of the transducer. Although the resonant frequency fo changes due to the temperature change etc., the driving frequency ... | 06/29/1976 |
| 3966693 | Method of and apparatus for continuously preparing a syrup of a monomer-polymer mixture A continuous mixing method and system for preparation of syrup employed as a starting material for continuously manufacturing plate products therefrom are disclosed. The syrup is prepared by a method in which at least one additive is incorporated into at ... | 06/29/1976 |
| 3964451 | Internal combustion engine with a supercharger An internal combustion engine provided with a supercharging system in which each cylinder head of the engine cylinders is provided with a valve controlled subordinate port connected to a pressurized intake air supply source, and valve actuating means actu... | 06/22/1976 |
| 3964452 | High compression internal combustion engine using a lean charge A spring-loaded piston is slidably arranged in an auxiliary chamber opening into the combustion chamber of an internal combustion engine. The spring-loading of the piston is preset so that the piston retracts at a certain high pressure attained during the... | 06/22/1976 |
| 3963879 | Telephone dial assembly There is disclosed herein an improved dial assembly suitably adapted to provide an expanded capability for a touch-tone telephone system or to replace existing rotary dial assemblies in various equipment manufacturers' subsets with a touch-tone like assem... | 06/15/1976 |
| 3960548 | Process for the separation of components in multicomponent mixtures, for the case wherein the diagram of binary phases of the two major components presents a monotectic and their densities are different A process for the separation of components in multicomponent mixtures, for the case wherein the diagram of binary phases of the two major components presents a monotectic and their densities are different, consisting of successive coolings and heatings of... | 06/01/1976 |
| 3959718 | Direct current supply source A direct current supply circuit for supplying a direct current to a communication terminal device as well as for repeating information from said communication terminal device to an electronic exchange has been disclosed. Said direct current supply circuit... | 05/25/1976 |
| 3952673 | Automatic method and apparatus for closing the toe of seamless hose Method and apparatus for automatically carrying out a toe-closing operation for a plurality of seamless hose simultaneously by several successive operational steps. One cycle of the successive steps being carried out during one cycle of the travelling of ... | 04/27/1976 |
| 3950267 | Process for producing activated carbon High quality activated carbon is produced by charging a mixture of an organic material such as wood, anthracite coal, brown coal, coconut husk, and a material containing metal oxide, metal carbonate or metal hydroxide, such as iron ore and lime, into an i... | 04/13/1976 |
| 3950253 | Domestic water filtration apparatus A portable domestic water purification and filtration apparatus includes a container for treating water to having a reservoir for storing untreated water and a pump having an inlet connected to pump water from the bottom of the reservoir and an outlet con... | 04/13/1976 |
| 3950227 | Batch method of establishing and maintaining a controlled aerobic environment for a microbial culture A flask for establishing and maintaining environmental control for microbial cultures. The flask has a body resembling an erlenmeyer flask, and a screw capped large opening in the top thereof. The flask also has three sidearm tubes extending through its w... | 04/13/1976 |
| 3949721 | Distributor for an internal combustion engine containing an apparatus for suppressing noise A distributor containing an apparatus for suppressing noise is described, comprising a first discharging gap which exists between electrodes of a distributor rotor and a stationary terminal, both of which are located in the distributor and a second discha... | 04/13/1976 |
| 3948022 | Apparatus for making a cartoned package A plurality of yarn packages are stably held by a pair of protector plates in parallel and non contacting condition to each other so as to form a unit package. The yarn packages are covered with a sheet of film as a whole or separately at a position insid... | 04/06/1976 |
| 3947545 | Purification of exhaust gas There are provided an improved thermal reactor apparatus for, and an improved method of, purifying exhaust gases, particularly from a motor vehicle, wherein thermal oxidation and catalytic oxidation of the CO and HC contents of the exhaust gases and/or ca... | 03/30/1976 |
| 3946013 | 1,3-BIS(Beta-ethylhexyl)-5-amino-5-methylhexahydropyrimidine-pyridine- 3-carboxylate, process for its preparation and pharmaceutical compositions containing this compound 1,3-BIS(ଲ-ETHYLHEXYL)-5-AMINO-5-METHYLHEXAHYDROPYRIMIDINE PYRIDINE-3-CARBOXYLATE(HEXETIDINE NICOTINATE), WHICH HAS GREATER BACTERIOSTATIC ACTIVITY AND LOWER TOXICITY IN COMPARISON WITH HEXETIDINE OR OTHER SALTS OF HEXETIDINE, IS PREPARED BY REACTING... | 03/23/1976 |
| 3945895 | Method of producing colored anodic coating on aluminum and its alloys Colored anodic coating of aluminum and its alloys can be obtained by immersing the aluminum or its alloys as an anode in an aqueous electrolyte solution containing aromatic sulfonic acid and at least one of formic acid and formate salts, which solution pr... | 03/23/1976 |
| 3944550 | Vitamin E orotate and a method of producing the same Vitamin E orotate which is useful in medicines and cosmetics, is produced by esterifying vitamin E with an orotyl halide or orotic anhydride or with orotic acid in the presence of phosphorous oxychloride.... | 03/16/1976 |
| 3943250 | Method and pharmaceutical preparations for treating and preventing physiological disturbances in vertebrates, caused by molds and yeasts Hexamethylenetetramine rhodanide together with conventional carriers and optionally vitamins and mineral salts is internally administered to mammals for treating and preventing herd sterility.... | 03/09/1976 |
| 3942503 | Cooling system for lubricating oil in an internal combustion engine A cooling system for lubricating oil in an internal combustion engine is disclosed, said system comprising a pressure-regulating valve adapted for controlling the pressure in said system, said valve having a passageway means connecting it to an oil pump a... | 03/09/1976 |
| 3942495 | Arrangement for heating the suction gases of an internal combustion engine An arrangement is disclosed for heating the suction gases of an internal combustion engine by utilizing the exhaust gases from the engine in order to promote the vaporization of the fuel contained within the suction gases while the engine is still in a co... | 03/09/1976 |
| 3941106 | Arrangement for heating the suction gases of an internal combustion engine An arrangement is disclosed for heating the suction gases of an internal combustion engine in order to promote the vaporization of the fuel contained within the suction gases while the engine is still in a cool state. In the arrangement, the high temperat... | 03/02/1976 |
| 3941069 | Automatic method and apparatus for closing the toe of seamless hose Method and apparatus for automatically carrying out a toe-closing operation for a plurality of seamless hose simultaneously by several successive operational steps. One cycle of the successive steps being carried out during one cycle of the travelling of ... | 03/02/1976 |
| 3938482 | Internal combustion engine with a plurality of exhaust valves An internal combustion engine comprising a first exhaust valve arranged in an exhaust port in the exhaust system of said internal combustion engine, and a second exhaust valve arranged in the exhaust port downstream from said first exhaust valve, the timi... | 02/17/1976 |
| 3933709 | Processing aids for poly(vinyl chloride) resins Compositions composed of an alkylphenoxy polyethylene glycol, an amine or quaternary ammonium salt of an organic acid and an amide facilitate blending of particulate poly(vinyl chloride) resins during fabrication of the resin into molded or extruded artic... | 01/20/1976 |
