Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 4706676 | Dermal substance collection device A dermal substance collection device (DSCD) is described which provides means for the non-invasive, instantaneous and continuous monitoring of chemical substances which are present in a detectable amount in either or both interstitial fluid or sweat or wh... | 11/17/1987 |
| 4665173 | 2-acetyl- and 2-propionylpyridine selenosemicarbazones This invention relates to novel 2-acetyl- and 2-propionylpyridine selenosemicarbazones. These compounds are useful as antimalarial and antileukemic agents. Also disclosed are several synthetic procedures used to prepare the selenosemicarbazones.... | 05/12/1987 |
| 4659708 | Anti-leishmanial lepidine derivatives The subject 8-[6-(N-heterocyclic-substituted)hexylamino]-6-methoxy lepidine erivatives have the formula: ##STR1## wherein Z represents methyl or, together with the two contiguous carbon atoms, the benzo moiety of a benzopiperazinyl derivative when Y i... | 04/21/1987 |
| 4657903 | Transition metal complexes of the selenium analogs of 2-acetyl- and 2-propionylpyridine thiosemicarbazones useful for treating malarial infections and leukemia This invention relates to novel transition metal complexes of 2-acetyl- and -propionylpyridine thiosemicarbazones, their selenium analogs. These compounds are useful as antimalarial and antileukemic agents. Also disclosed are several synthetic procedures u... | 04/14/1987 |
| 4655235 | Chemical contamination monitor A chemical contamination monitoring system is provided for monitoring and decontaminating protective clothing that has been exposed to toxic chemicals. The system includes a decontamination chamber in which the clothing is supported and a spray assembly, ... | 04/07/1987 |
| 4637931 | Polyactic-polyglycolic acid copolymer combined with decalcified freeze-dried bone for use as a bone repair material A novel bone repair material consisting essential of decalcified freeze-dd bone and biodegradable, biocompatible copolymer has been developed for improving and accelerating the healing of osseous tissue. The bone repair material was prepared by combining... | 01/20/1987 |
| 4591573 | Sensitive radioimmunoassay using antibody to L-hyoscyamine A sensitive and specific radioimmunoassay is developed for L-hyoscyamine ulting from atropine administration with which a concentration as low as 25 pg/ml using 0.1 ml of sample can be measured without the need for extraction. Specificity studies indicat... | 05/27/1986 |
| 4578384 | Polylactic-polyglycolic acids combined with an acidic phospholipid-lysozyme complex for healing osseous tissue A novel material consisting of a combination of a proteolipid and biodegradable, biocompatible copolymer has been developed for improving and accelerating the healing of osseous tissue. The proteolipid was prepared by combining muco-peptide-N-acetyl-muram... | 03/25/1986 |
| 4571632 | Alternate line interpolation method and apparatus A method and apparatus are provided for data compression in a digital facile document transmission system. In accordance with the method, only alternate scan lines are transmitted, i.e., every other line is deleted in transmission, and at the receiver, t... | 02/18/1986 |
| 4561450 | Electrolytic pressure transduction system This invention is directed to a Wheatstone bridge circuit for measuring pressure in the distal esophageal sphincter (D.E.S.) as well as in other organs and bodily cavities. A flexible hollow tube having three spaced electrodes is lodged in the esophagus. ... | 12/31/1985 |
| 4532625 | Communications network status information system This disclosure concerns a communications network information system, and ovides apparatus and a method for efficiently providing survivable communications capability to every surviving node in the communications network from every other surviving node. T... | 07/30/1985 |
| 4494563 | Fluid safety valve A typical embodiment of the invention provides a means for protecting delte instruments from damage. A flexible membrane separates two chambers in which, during ordinary operation, the fluid pressures are the same. One of the two chambers also serves as ... | 01/22/1985 |
| 4491014 | Bond testing apparatus An apparatus for measuring the strength of a bond between a lamina and its ubstrate, or the like is shown and described. Air, or some other fluid under pressure, causes a gasket to protrude from a piston to seal the atmosphere from a chamber within the pis... | 01/01/1985 |
| 4488043 | Tomographic marking device A tomographic marking device is disposed in an electron microscope between a goniometer stage for holding a specimen and a fluorescent screen for displaying a magnified image of the specimen. The device comprises an externally geared, ring wheel, having a... | 12/11/1984 |
| 4473496 | Intramolecularly crosslinked hemoglobin This invention relates to molecular modification of hemoglobin by utilizan of a class of , ω-dialdelhydes having a chain length of 5 to 7 members and substituted with at least one negatively charged group such as a phosphate moiety. A subject &#x... | 09/25/1984 |
| 4463680 | Method of generating single-event, unconfined fuel-air detonation Unconfined detonation by a single-event process is achieved by simultaneous ispersion of both fuel and the initiating chemical catalyst into the atmosphere. The fuel is selected from a volatile liquid (lower molecular weight, alkanes, epoxyalkanes, etc.), ... | 08/07/1984 |
| 4461284 | Surgical retaining device A retaining device for fixedly holding a surgical instrument in a predetermined spatial orientation during surgery comprising an arm having a ball-and-socket joint for grasping the surgical instrument, another arm having a ball-and-socket joint for securi... | 07/24/1984 |
| 4453768 | Portable reclining examination chair A portable multi-component reclining examination chair comprises a contai wherein the chair's components can be stored for transportation. When removed from the container, the components attach to the container for assembly of the chair. Assembled, the c... | 06/12/1984 |
| 4453546 | Scleral depressor An ophthalmic instrument for controlling eye position comprising a substantially oblong shaped blade that has a textured surface and that is formed with a hole substantially in the middle of the blade. In operation, the blade is manipulated by the operato... | 06/12/1984 |
| 4447395 | Sampling device Apparatus for processing and analyzing various liquids, such as blood ser includes an indexable table for supporting a plurality of liquid sample containers. A probe is inserted into each sample container in succession. During probe insertion, a portion ... | 05/08/1984 |
| 4444119 | Fast response impulse generator An impulse generator for providing an impulsive force substantially normal o the axis of a missile to provide the missile with the desired angle of attack. The device includes radial explosive paths to its periphery and from each point on the periphery det... | 04/24/1984 |
| 4440771 | 2-Acetyl quinoline thiosemicarbazones useful in treatment of gonorrhea, malaria or bacterial infections This invention relates to the preparation and use of various 2-acetyl quiine thiosemicarbazones which are substituted on the 4-nitrogen atom. These compounds are useful in the treatment of gonorrhea and, in addition, many are useful either in the treatme... | 04/03/1984 |
| 4426440 | Integrated optical grating device by thermal SiO2 growth on Si Disclosed is a method of producing an integrated optical grating device having extremely low scattering losses. The method employs a highly polished and prepared silicon chip for receiving a grating pattern or any other surface relief feature on the silic... | 01/17/1984 |
| 4425654 | Ultraviolet preionizer for high power laser An ultraviolet preionizer for high power gas lasers. The preionizer is a spark gap array or groups of arrays adapted to be fired preceeding the main discharge pulse of the laser. A fast energy dump to the spark array results in efficient ultraviolet light... | 01/10/1984 |
| 4421104 | Concentrating/tracking solar energy collector A concentrating/tracking solar energy collector comprised of a rotatable reflective trough assembly having a heat absorber assembly integrally therein. A heat exchange tube supports the absorber assembly in the trough and also serves as an axis point abou... | 12/20/1983 |
| 4416872 | Treatment of malaria with liposomes containing 8-aminoquinoline derivatives and glycoconjugates A novel treatment has been discovered for interrupting the life cycle of malaria parasite during its development in the liver of the vertebrate host. The subject invention involves a method of chemotherapy against sporozoite-induced malaria by administe... | 11/22/1983 |
| 4412114 | Electrical switch A normally open laminated electrical switch comprises a sandwich of two electrically conductive sheets on opposite sides of, and separated by, a thin layer of insulation. Upon rupture or discontinuity of the thin insulative layer, the electrically conduct... | 10/25/1983 |
| 4400724 | Virtual space teleconference system A teleconference system for N conferees, N being greater than two, includes at least two separate stations. Each station has N conferee positions, confronting a virtual conference space, and corresponding conferee positions at each station have the same r... | 08/23/1983 |
| 4392348 | Device for bleeding motor gases thru motor pole piece A device for bleeding motor gases through the motor pole piece or flange the rocket nozzle flange to reduce the control system weight and complexity and especially for fiber glass wound rocket motor cases.... | 07/12/1983 |
| 4391993 | Thermolysis of tetraalkylammonium borohydrides to bis(tetraalkylammonium) decahydrodecaboranes Disclosed is an improved method and the thermolysis equipment setup for certing tetraethylammonium tetrahydridoborane to bis(tetraethylammonium) decahydrodecaborane by a thermolysis reaction which increases the yield in the range between about 22% to 64%... | 07/05/1983 |
| 4382678 | Measuring of feature for photo interpretation A method and apparatus is disclosed for determining the height, width, leh and orientation of an object from the feature image of the object found on oblique panoramic aerial photography. A magnifying eyepiece is provided with a calibrated reticle for me... | 05/10/1983 |
| 4368959 | Apparatus for and method of testing vision The apparatus and method comprise means to evaluate the interocular latency difference known to exist in individuals afflicted with multiple sclerosis. The apparatus includes two horizontal rows of 10 light emitting diodes separated by a horizontal partit... | 01/18/1983 |
| 4316359 | Method of imparting hypergolicity to non-hypergolic rocket propellants Disclosed is a method of converting non-hypergolic, liquid, rocket propellants into hypergolic propellants. The method to accomplish the conversion relates to the use of ammonium metavanadate as an additive to the liquid oxidant, such as, red fuming nitri... | 02/23/1982 |
| 4315434 | Pulse width modulation (PWM) with jewel pivot accelerometer The output of the accelerometer is sent to a pulse width modulating digitng circuitry which consists of a comparator to generate the PWM signal, a flip-flop steering circuit, an "H" switch to toggle the torquer constant current either positive or negativ... | 02/16/1982 |
| 4306154 | Dosimeter The construction of a direct reading, ionization chamber dosimeter is almost exclusively of thermoplastic material. Except for an electrometer frame and switch contacts, the dosimeter comprises components of injection molded thermoplastic material. The do... | 12/15/1981 |
| 4260384 | Obscuration device for tank gunners A tank gunner obscuration device is provided for automatically and selectively obscuring the view out of the tank seen by the gunner in response to the firing of the main gun of the tank so as to simulate the obscuration produced by smoke, heat and debris... | 04/07/1981 |
| 4252537 | Quantification of the munitions, HMX, RDX, and TNT in waste water by liquid chromatography Disclosed is a liquid chromatography process for the quantitative determination of nitro-amines and nitro-aromatics in liquid samples, which comprises directly injecting a liquid sample containing these compounds onto a liquid chromatography column, separ... | 02/24/1981 |
| 4072425 | Method of indicating the relative roughness of a surface The relative roughness of a surface, finished with a plurality of uniform rallel grooves, is indicated in a method wherein (a) a focused beam of light is directed normal to the surface, (b) a light-sensitive device is disposed to one side of the beam to r... | 02/07/1978 |
| 4056290 | Method of changing the frequency of a laser beam The frequency of a laser beam can be changed by directing the laser beam through a crystal that has paraelectric and ferroelectric states, above and below a Curie transition temperature, respectively. The crystal is maintained at a constant temperature sl... | 11/01/1977 |
| 4033185 | Wind-tunnel simulator A novel wind-tunnel simulator produces a flow of a gas over a spinning trr projectile to simulate the flame shape from the tracer projectile as though in actual flight. The wind-tunnel simulator comprises a fixture formed with an opening for receiving th... | 07/05/1977 |
