Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 4317691 | Liquid or gelled nitroparaffin and metal perchlorate containing explosive composition This invention relates to a liquid explosive composition comprising 2 to 40 weight percent of formamide, 2 to 40 weight percent of alcohol, 3 to 70 weight percent of nitroparaffin and 10 to 80 weight percent of a metal salt of perchloric acid and to a gel... | 03/02/1982 |
| 4294835 | 2-Hydroxy benzamide derivatives and use thereof as a fungicide A compound represented by the formula: ##STR1## wherein R1 is hydrogen, acetyl or alkoxycarbonyl having 1-3 carbon atoms of the alkoxy, R2 is alkyl having 1-12 carbon atoms, alkoxycarbonylmethyl having 1-12 carbon atoms of the a... | 10/13/1981 |
| 4289015 | Chain link tool A chain link tool including a pair of jaws on one side of the tool adapted to close the respective eyes of a cross chain connecting link, said jaws moving together as the handles are moved together and conversely, and such that a groove and a projection o... | 09/15/1981 |
| 4287389 | High-fidelity speaker system A negative-feedback circuit for use with a moving-coil loudspeaker and a host amplifier modifies the feedback signal from the output of the host amplifier in such a say that the velocity of the voice coil of the speaker more closely follows the signal vol... | 09/01/1981 |
| 4284628 | 2-Hydroxy benzamide derivatives and use thereof as a fungicide A compound represented by the formula: ##STR1## wherein R1 is hydrogen, lower alkylcarbonyl, lower alkoxycarbonyl, phenoxycarbonyl, lower alkylsulfonyl or lower alkylcarbamoyl, R2 is phenyl; phenyl substituted by one or more mem... | 08/18/1981 |
| 4273761 | Method of enhancing absorption of antitumor agent into gastrointestinal tumor site and orally administrable antitumor compositions therefor This invention relates to a method for selectively enhancing absorption of 5-fluorouracil, bleomycins or bleomycin derivatives into the gastrointestinal tumor site by orally administering such substance together with an alkali metal salt of polyacrylic ac... | 06/16/1981 |
| 4273676 | Process for producing methacrylic acid and a catalyst A catalyst having a heteropoly-acid structure and the general formula: wherein Mo, V, P, Cu and O represent respectively molybdenum, vanadium, phosphorus, copper and oxygen, X represents one or more elements selected from the group consisting of tin, thorium, ... | 06/16/1981 |
| 4273555 | Azo compounds An azo compound which in the free acid form is represented by the following formula: ##STR1## where R1 stands for methyl, ethyl, R2 stands for hydrogen, methyl, methoxy or ethoxy, R3 stands for hydrogen or methyl, and... | 06/16/1981 |
| 4268559 | Heat-shrinkable article Heat-resistant pressure-sensitive adhesives are used to form the closure of a heat-shrinkable wrap-around sleeve. Suitable pressure-sensitive adhesives include silicone-based adhesives and thermosetting adhesives.... | 05/19/1981 |
| 4266814 | Plastic tube adapter A fitting for receiving and locking a plastic tubing in place within it including a hollow tubular member having both compression and flexible locking barbs therein.... | 05/12/1981 |
| 4265002 | Magnetic fastening means Fastening means for a pair of flaps or the like are provided having first and second ferromagnetic plates, an elongated ferromagnetic element of cross-sectional area smaller than the area of the surfaces of either plate affixed at one end thereof substant... | 05/05/1981 |
| 4250392 | Bi-focal collimator A collimator suitable for use in the creation of more than one miniaturized image of a radioactive concentration simultaneously by a radiation receiving and imaging device, said collimator having at least two adjacent collimating sections separated by are... | 02/10/1981 |
| 4237141 | Derivatives of -methyl-ଲ-aminopropiophenone and use thereof Novel -methyl-ଲ-aminopropiophenone derivatives having bronchodilator activity represented by the following general formula: ##STR1## where R represents alkyl having 1-6 carbon atom benzyl or phenyl; R1 and R2 indivi... | 12/02/1980 |
| 4231828 | Method for applying magnetic strips A machine and method comprising a stack of cards, a stripping feeder for stripping the bottom card from the stack and moving a series of such cards with an intermittent motion to a series of feed rollers which convert such intermittent motion into a const... | 11/04/1980 |
| 4230947 | Apparatus for treating flowable material An apparatus for treating flowable material falling through an irradiation zone in the form of a thin, substantially nonturbulent, cohesive layer including in combination an outlet reservoir adapted to catch the falling material after it is irradiated; a ... | 10/28/1980 |
| 4229618 | High-fidelity speaker with negative feedback A negative-feedback circuit for use with a moving-coil loudspeaker and a host amplifier modifies the feedback signal from the output of the host amplifier in such a way that the velocity of the voice coil of the speaker more closely follows the signal vol... | 10/21/1980 |
| 4225534 | Process for the production of 2-chlorobenzonitrile derivatives A process for the production of 2-chlorobenzonitrile derivatives represented by the general formula (I): ##STR1## (wherein n is a number of 1 or 2) characterized by reacting a compound of the general formula (II): ##STR2## (wherein Cln... | 09/30/1980 |
| 4223890 | Set of tiles for covering a surface A set of tiles for covering a regular polygon having an even number of sides is composed of tiles each of which is distinct from the other tiles in the set. The tiles in the set may be combined so as to form the regular polygon in a number of ways which i... | 09/23/1980 |
| 4218433 | Constant-rate eluting tablet and method of producing same A tablet formed with a hollow or hollows in its surface and containing a water-soluble component is coated with a coating agent which is insoluble in water but has water permeability, thereby to obtain a constant-rate eluting medicinal tablet. A process o... | 08/19/1980 |
| 4211240 | Inspiratory force adaptor An inspiratory force adapter designed to be connected between a tracheostomy tube and an inspiratory pressure gauge, comprising a hollow plastic body adapted to be grasped by the thumb and finger of the operator and having a finger port adapted to be clos... | 07/08/1980 |
| 4200632 | 2-Hydroxy benzamide derivatives and use thereof as fungicides A compound represented by the formula: ##STR1## wherein R1 is hydrogen or alkyl-carbonyl wherein the alkyl has 1 to 6 carbon atoms and R2 is alkyl having 1 to 18 carbon atoms or phenyl and use thereof as fungicide.... | 04/29/1980 |
| 4198590 | High current triggered spark gap A triggered spark gap suitable for use with high levels of voltage and current over long periods of time generally comprising support means, a pair of insulated main electrodes disposed opposite each other on the support means so as to form a gap therebet... | 04/15/1980 |
| 4190589 | Coriolin derivatives and process for producing the same Coriolin derivatives having antitumor activity and low toxicity represented by the following general formula: ##STR1## where R: --CO(CH2)6 CH3 or --COCH(OH)(CH)2)5 CH3, X: .dbd.CH... | 02/26/1980 |
| 4183736 | Electrostatic precipitation An improved procedure is disclosed for the electrostatic precipitation of particulates entrained in a stream of gas between corona electrodes and collecting electrodes. The underlying dc field which serves to charge the particulates and transport them out... | 01/15/1980 |
| 4179963 | Scrag saw mill dogging system A scrag saw mill provided with a pair of dogging carriages each carrying a pair of dogs located at opposite sides of the log to be sawed. The dogs are operated by thrust rods from hydraulic cylinders to force the dogs into clamping positions on opposite s... | 12/25/1979 |
| 4178682 | Ratchet cable cutter A ratchet cable cutter is provided with a double linkage between the handle and the pawl of the ratchet mechanism, and the relation between the two linkages is such that improved mechanical advantage is obtained while keeping the linkage mechanism within ... | 12/18/1979 |
| 4172552 | Credit card processing system A credit card processing system involving the use of a machine for reading the data encoded in the magnetic stripe of such a card and for printing such data in MICR characters, at the point of sale, along the bottom of the merchant's bank sales slip copy ... | 10/30/1979 |
| 4172054 | Modeling composition for craft works and a method for the production thereof This invention relates to an improved modeling composition of a soft pliable, working consistency for being molded into any desired shape and form and is relatively rapid-drying so as to provide preferable handicraft articles having any desired shape or f... | 10/23/1979 |
| 4172051 | Catalyst for producing methacrylic acid This invention relates to a process and catalyst for producing methacrylic acid by the oxidation of methacrolein. More specifically, it relates to a process for producing methacrylic acid from methacrolein by oxidizing the same with molecular oxygen or mo... | 10/23/1979 |
| 4168993 | Process and apparatus for sequentially forming and treating steel rod A process and apparatus for rolling and cooling medium to high carbon steel rod is provided wherein the rod is rolled at high speed and laid in rings directly onto a conveyor at high temperature. Thereafter high velocity hot water is sprayed onto the ring... | 09/25/1979 |
| 4150110 | Coated granules of polyacrylic alkali metal salts and method of producing same Granules of polyacrylic alkali metal salts are coated with a water-insoluble but water-permeable coating agent.... | 04/17/1979 |
| 4149925 | Machine for applying magnetic strips A machine comprising a stack of cards, a stripping feeder for stripping the bottom card from the stack and moving a series of such cards with an intermittent motion to a series of feed rollers which convert such intermittent motion into a constant velocit... | 04/17/1979 |
| 4148822 | Process for the manufacture of methacrylic or acrylic acid Methacrolein or acrolein is oxidized with molecular oxygen in the presence of water vapor, a catalyst containing palladium, phosphorus, antimony(optionally) and oxygen and a phosphoric acid or a compound capable of forming phosphoric acid during the react... | 04/10/1979 |
| 4140976 | Thermally stable push-pull amplifier A class B push-pull transistor power amplifier is disclosed having two amplification branches each of which is internally compensated in the signal processing/voltage amplifying section thereof for the effects of temperature on the transistors contained t... | 02/20/1979 |
| 4138365 | Catalyst for the manufacture of methacrylic or acrylic acid A catalyst comprising (1) palladium, (2) phosphorus, (3) antimony, (4) X and (5) oxygen wherein X denotes at least one element selected from the group consisting of potassium, sodium, rubidium, lithium, cerium, beryllium, magnesium, calcium, vanadium, str... | 02/06/1979 |
| 4138558 | Anthraquinone compounds Anthraquinone compounds represented by the following formula are useful as dyes: ##STR1## wherein Y stands for a hydrogen atom or a nitro group, Z stands for an oxygen or sulfur atom when Y stands for a hydrogen atom, but Z stands for an oxygen ... | 02/06/1979 |
| 4133649 | Reduced power input for improved electrostatic precipitation systems An improved procedure is disclosed for supplying the power to an electrostatic precipitation system of the type wherein an underlying dc field serves to charge the particulates and transport them out of the stream of gas, while the corona which is require... | 01/09/1979 |
| 4126696 | 4-Alkylsulfonyloxyphenyl N-alkylthiolcarbamates and use thereof as fungicide for agriculture New 4-alkylsulfonyloxyphenyl N-alkylthiolcarbamates of the formula ##STR1## wherein each of R1 and R2 is a lower alkyl having from 1 to 6 carbon atoms and X is hydrogen, chlorine or methyl. The compounds have excellent effect on... | 11/21/1978 |
| 4124631 | Process for the production of aromatic nitriles A process for the production of aromatic nitrile having the formula (I) ##STR1## wherein X represents a chlorine, bromine, iodine or fluorine atom and n is 1 or 2, By contacting aromatic compound having the formula (II) ##STR2## wherein X and n ... | 11/07/1978 |
| 4122346 | Optical devices for computed transaxial tomography Various optical devices for use with circular-scanning techniques in computed transaxial tomography are disclosed. In essence such devices produce a rotating dipole field so as simultaneously to provide a circular scan and to focus the charged particle be... | 10/24/1978 |
