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"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 5066787 | Blood coagulation inhibiting proteins, processes for preparing them and their uses This invention discloses proteins which inhibit the coagulation of the blood, processes for preparing these proteins, and the use thereof.... | 11/19/1991 |
| 5041829 | Interpolation method and shaft angle encoder A method of interpolating between two signals comprising the conversion of each signal into digital form and use of the converted signals to address a memory device at each address of which is pre-stored the result of interpolation for a particular combin... | 08/20/1991 |
| 5019921 | Pop noise removing circuit for a double deck cassette tape recorder A pop noise removing circuit for a double deck cassette tape recorder, which can thoroughly remove the pop noise occurring during the actuation of two deck leaf switches to drive deck motors. The circuit comprises means detecting ON-OFF operation of the d... | 05/28/1991 |
| 5015058 | Asymmetric fibre optic couplers and their fabrication An asymmetric multi-mode fibre optic coupler is assembled from two or more multi-mode optical fibres of different core and cladding diameters but substantially equal cladding refractive indices. The fibres are selected so as to have substantially equal ef... | 05/14/1991 |
| 5013652 | Composite yeast vectors A DNA sequence comprising: (a) a hybrid first yeast promoter comprising the functional segment of the DNA sequence encoding the upstream activation site of a gene selected from the group consisting of GAL1, GAL7 and GAL10, operably linked to the functiona... | 05/07/1991 |
| 5011687 | Purified Mullerian inhibiting substance and process for treating human ovarian cancer cells Purified Mullerian inhibiting substance (MIS) is obtained from testicular tissue by extraction, density gradient sedimentation and chromatography. The purified MIS has selective activity for inhibiting the growth of human ovarian cancer cells.... | 04/30/1991 |
| 5001225 | Monoclonal antibodies to a pan-malarial antigen A continuous hybridoma cell line, designated 7H8, which secretes a monoclonal antibody (MAb 7H8) of the IgM class and which binds to a protein present in species of the genus Plasmodium. MAb 7H8 also recognizes an antigen (antigen Pf93) unique to P. falci... | 03/19/1991 |
| 4997645 | Methods and pharmaceutical composition for the treatment of tumors Disclosed is a method of treating tumors capable of being treated with interferon which is comprised of interferon and dipyridamole, or pharmaceutically acceptable salts thereof, in amounts sufficient to enhance the anti-tumor effect of interferon. Furthe... | 03/05/1991 |
| 4989932 | Multiplexer for use with a device for optically analyzing a sample The invention is a multiplexer which enables light to be sent to and received from samples for simultaneous analysis. A multiplexer is described which uses a transverse probe to reflect light at an angle into an optical rod. The transverse probe is select... | 02/05/1991 |
| 4990452 | Combining mutations for stabilization of subtilisin The invention relates to modified subtilisin enzymes which have increased thermal stability. The modified subtilisin enzymes have at least two or more amino acid mutations which confer increased thermal stability. It has been discovered that combining ind... | 02/05/1991 |
| 4985359 | Vectors and methods for the construction of cDNA libraries Vectors useful in the construction of cDNA libraries and methods for constructing these vectors are disclosed. According to the invention, a vector includes a polylinker region which is cut to linearize the vector. Oligo(dC) tails having terminal dideoxyn... | 01/15/1991 |
| 4983903 | Automatic battery exchanging system for automatic guided vehicles An automatic battery exhanging system for use with automatic guided vehicles which is capable of taking out the battery which is discharged below a threshold voltage of usefulness, mounting the battery to a recharging station, and after charging it, takin... | 01/08/1991 |
| 4984033 | Thin film semiconductor device with oxide film on insulating layer A thin film semiconductor device is formed by preparing a substrate, forming a pattern of metal thin film on the substrate, forming an insulating layer on the metal thin film, and forming a pattern of a semiconductor thin film active layer over the patter... | 01/08/1991 |
| 4983547 | Method of forming a silicide film In a method of forming a metallic silicide film on a substrate, a metallic silicide film containing silicon at a concentration higher than stoichiometric, is deposited on a substrate. A film of aluminum or aluminum alloy is then deposited on the metallic ... | 01/08/1991 |
| 4981858 | Optical isomers The (+)-cis-, (-)-cis-, (+)-trans- and (-)-trans- forms of 2-methylspiro(1,3-oxathiolan-5,3')quinuclidine are prepared by optical resolution of each of the (&#b1;)-cis- and (&#b1;)-trans-isomers. These compounds find application in treating diseases of th... | 01/01/1991 |
| 4982370 | Shared sense amplifier semiconductor memory In a dynamic random access semiconductor memory device comprising a sense amplifier and two pairs of bit lines sharing the sense amplifiers, each of the bit lines having a plurality of memory cells connected thereto, when a memory cell connected to one of... | 01/01/1991 |
| 4981823 | Beryllium oxide based ceramics A ceramic article made from a mixture comprising (on a dry weight basis) magnesium oxide (MgO) in an amount up to 2% by weight, a defined rare earth oxide in amount up to 10% by weight, balance beryllium oxide, and trace elements, the defined rare earth o... | 01/01/1991 |
| 4981797 | Process of producing highly transformable cells and cells produced thereby Process for producing transformable, competent cells including the steps of growing the cells in a growth conducive medium at a temperature of less than 37° C. and freezing the cells, and cells produced by the process.... | 01/01/1991 |
| 4980288 | Subtilisin with increased thermal stability Cloned DNA is mutated by creating a single-stranded target region in a cloned DNA segment, and introducing a mutation into the single-stranded target region by treating the target region with a chemical or biological mutagenizing agent capable of introduc... | 12/25/1990 |
| 4978821 | Reverse flow prevention device for combustion apparatus A reverse flow prevention device for combustion apparatuses control operated by electrical power, and which is provided with a combustion gas discharge tube for discharging the combustion process by-product. The reverse flow device comprising a reverse fl... | 12/18/1990 |
| 4979013 | Semiconductor memory device A semiconductor memory device having a memory cell array of a folded bit line configuration comprises memory cells, two each of which are formed to share a contact hole and surrounded by an isolation trench, and data charge storage capacitance formed on t... | 12/18/1990 |
| 4977247 | Immobilized protein G variants and the use thereof Immobilized IgG binding proteins and the use thereof to effect affinity chromatography and separate the subclasses of IgG. Disclosed are cysteine-containing IgG binding proteins which have high binding capacity for human IgG and mouse monoclonal IgG.... | 12/11/1990 |
| 4974654 | Pneumatic tire reinforced by steel cords with tapered ends A pneumatic tire reinforced by steel cords embedded as a reinforcing layer in rubber is disclosed in which each of the steel cords has a multilayer structure composed of a core layer made of a number of element wires twisted together, and at least one she... | 12/04/1990 |
| 4975374 | Expression of wild type and mutant glutamine synthetase in foreign hosts The invention relates to a mutant glutamine synthetase (GS) enzyme which is resistant to inhibition by herbicidal GS inhibitors, such as phosphinothricin (PPT), genetic sequences coding therefor, plants cells and prokaryotes transformed with the genetic s... | 12/04/1990 |
| 4972866 | Purge control module A purge module is provided which provides gas to an enclosure at a first flow rate in order to purge the enclosure of harmful gases. After the pressure within the enclosure has reached a predetermined level, a sensor enables gas at a low pressure to be su... | 11/27/1990 |
| 4973669 | Monoclonal IgM antibody with specificity against hepatitis B surface antigen The monoclonal antibodies are specific for a determinant found on hepatitis B surface antigen, and show high affinity for this determinant. Hybridomally produced monoclonal IgM antibodies having high affinity are useful for the immunoassay and purificatio... | 11/27/1990 |
| 4971165 | Car height adjusting apparatus for a tractor A car height adjusting apparatus for a tractor, which lifts the car body by utilizing the driving power of the tractor and thereby without using a lifting device, such as a jack or a crane.... | 11/20/1990 |
| 4972019 | Water-absorbent resin composition A water-absorbent resin composition having superior gel stability which comprises a water-absorbent resin, at least one oxygen-containing reducing inorganic salt and, optionally, at least one organic antioxidant.... | 11/20/1990 |
| 4972466 | Digital composite tone alerting Within a digital PBX system or the like, an appartaus permits provision of digital composite tone alerting particularly suitable for piezoelectric transducers with one arbitrarily selectable tone, by means of logic circuits for latching the sign-bit in a ... | 11/20/1990 |
| 4970811 | Advertising device for a vending machine An advertising device for a vending machine which can display the image of serving drinks out of a tea-kettle into a cup or the like. The device includes first and second displays installed inside of a transparent or semitransparent billboard in front of ... | 11/20/1990 |
| 4970147 | Oxygen regulatable gene expression The invention discloses that, in the presence of NifA and NtrA, the expression of a desired DNA molecule which has been operably linked to an ntrA-RNA polymerase and NifA dependent promoter can be regulated by regulating the oxygen level of the culture me... | 11/13/1990 |
| 4968787 | Method for treating glycoside A method for extracting and separating an aglycone which constitutes a glycoside, said method comprises steps of: subjecting a material containing the glycoside to hydrolysis to decompose the glycoside into a sugar moiety and an aglycone; extracting the aglyco... | 11/06/1990 |
| 4968036 | Ice hockey puck The puck is provided in its center with a recess (2) to receive at least one light source (3), and light channels (7) are arranged leading from this light source (3) to its circumscribing surface (4) and/or to the edges of its two lateral surface (5, 6), ... | 11/06/1990 |
| 4966091 | System for mounting accessories on inflatable structures such as boats The invention provides a system for mounting accessories on inflatable structures. The system according to the invention is characterized by having a profiled molding (2) forming a strip adapted to be secured to the inflatable structure (1), and selective... | 10/30/1990 |
| 4966848 | Isolation, purification, characterization, cloning and sequencing of N -acetyltransferase This invention is directed to N -acetyltransferase with a molecular weight of about 180,000 daltons, said N -acetyltransferase being composed of two subunit peptides having molecular weights of about 95,000 each, having... | 10/30/1990 |
| 4963256 | Dialysis cell A sampling device for use with an open necked container capable of holding a fluid material, comprises a hollow support member insertable into the container through the open necked portion thereof. The support member comprises a main body portion of a sma... | 10/16/1990 |
| 4961436 | Contraceptive cervical cap A cervical cap for covering a portion of the cervix uteri in order to prevent migration of sperm from the vagina into the cervical canal to thereby prevent conception. The cervical cap has an open end portion, a dome-shaped portion, preferably sealed, dis... | 10/09/1990 |
| 4960658 | Color filter dyeing apparatus A color filter dyeing apparatus for dyeing a color filter formed on a substrate comprises a chuck for holding the substrate on which the color filter is mounted, a dyeing solution receptacle in intimate engagement, by means of a sealing member, with the c... | 10/02/1990 |
| 4959641 | Display means for stereoscopic images A stereoscopic display device in which a plurality of independently controllable and discrete light sources are provided in fixed relation to a lenticular screen. The light sources are adapted and arranged for the display of a pair of interlaced images su... | 09/25/1990 |
| 4957613 | Adjustable-height vertical gel slab electrophoresis apparatus An adjustable-height vertical gel slab electrophoresis apparatus comprises a vertically oriented gel slab arranged between upper and lower buffer solution reservoirs. A bifurcated removable lower tray contains both an upper buffer reservoir drain and lowe... | 09/18/1990 |
