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 |
| 5926414 | High-efficiency miniature magnetic integrated circuit structures Magnetic integrated circuit structures exhibit desirable characteristics for purposes of realizing a magnetic semiconductor memory. In combination with a carrier-deflection-type magnetic field sensor, each of a variety of magnet structures realize a condi... | 07/20/1999 |
| 5710335 | Process for preparing 3-(N,N-disubstituted amino)phenol A process for preparing a 3-(N,N-disubstituted amino)phenol is herein disclosed which comprises reacting resorcin with a primary amine represented by formula (2): R1 NH2 (2) wherein R1 ... | 01/20/1998 |
| 5557918 | Gas turbine and method of operating it A gas turbine apparatus for higher pressure and temperature ratio operation, improved thermal efficiency and minimized NOx emissions includes a high pressure compressor, a high pressure turbine, a low pressure turbine and combustion chambers fo... | 09/24/1996 |
| 5559247 | Carboxylate and heat-sensitive recording material using same A carboxylate is herein disclosed which is represented by the formula (1) or (2) ##STR1## wherein a ring X is an aromatic residue which may have a substituent; the other substitutents are as defined herein. A heat-sensitive recording material co... | 09/24/1996 |
| 5536878 | Method for preparing aromatic secondary amino compound Disclosed are (1) a method for preparing an aromatic secondary amino compound which comprises reacting an N-cyclohexylideneamino compound in the presence of a hydrogen moving catalyst and a hydrogen acceptor by the use of a sulfur-free polar solvent and/o... | 07/16/1996 |
| 5515244 | Light-transmitting pipe A light pipe for a personal computer transmits light from a lamp to an indicator window formed in the computer housing. The pipe is formed of a block of light-transmitting plastic material and includes a plurality of sections oriented perpendicular to one... | 05/07/1996 |
| 5493525 | Carry-chain compiler Carry-chain structures useful in circuits such as adders, subtractors, counters and arithmetic logic units (i.e., ALU's). The carry-chain structures have regular architectures that can be conveniently generated in various bit widths by automated compiler ... | 02/20/1996 |
| 5488167 | Synthesis of sphingosines Provided by the present invention is a process for the biocatalytic synthesis of optically pure sphingosines from achiral starting material. The stereoisomers of sphingosine are prepared from chiral arene diols using stereospecific reaction techniques to ... | 01/30/1996 |
| 5452369 | Process for producing a synthesized reference image for the inspection of objects A process for synthesizing a reference image of an object by applying real image characteristic element data to characteristic elements of a descriptive (CAD based generated) image. The process includes preprocessing the descriptive image data by identify... | 09/19/1995 |
| 5388873 | Coupling device useful for joining or capping plastic pipe A coupling device for joining ends of pipes together or capping an end of a single pipe. The device includes a metal insert having serrations for engaging an inner surface of a plastic pipe, a deformable coupling member which overlies the pipe and a metal... | 02/14/1995 |
| 5143844 | Construction of an IgG binding protein to facilitate downstream processing using protein engineering A recombinant DNA fragment (Z) coding for an immunoglobulin G binding domain related to staphylococcal protein A. The methionine codon of the recombinant DNA fragment has been replaced with a codon of an amino acid residue other than methionine to enable ... | 09/01/1992 |
| 5081671 | Method of reducing blockages in handing over calls in a mobile, cellular telephone system A method of reducing blockages and call interruption in handling over calls in a cellular mobile radio system. When the signal strength from a base station to a mobile and vice versa falls below a given value the handover shall take place to another base ... | 01/14/1992 |
| 4947684 | System and process for detecting properties of travelling sheets in the machine direction To determine machine-direction variations in measurements of a travelling sheet during production, the sheet is repeatedly traversed with a scanning sensor and, during each traverse, measurements are taken at a plurality of locations. Then, a series of re... | 08/14/1990 |
| 4892024 | Structure of keyboard used in electronic keyboard instrument There is disclosed a keyboard structure incorporated in an electronic keyboard instrument the keyboard structure including; a plurality of key members each having a depressible front end portion and a rear end portion; a plurality of flexible connecting m... | 01/09/1990 |
| 4769274 | Relatively inexpensive thermoformable mat of reduced density and rigid laminate which incorporates the same A relatively inexpensive mat is provided which through the application of heat and pressure readily can be densified to form rigid shaped articles having a reduced overall density. The mat is substantially free of a binder (e.g., a latex binder) and consi... | 09/06/1988 |
| 4429319 | Method and apparatus for registering a time-dependent quantity to be measured Dosimetric data are registered in several channels as a directly readable bar chart, the height of the readable registration of each respective bar being a direct measure of the integrated dose value of the associated channel. Preferably, the registration... | 01/31/1984 |
| 4329788 | Process for separating a gas and a condensable vapor A process is provided for the separation of a gas and a condensable vapor present in the gas. The vapor-containing gas is contacted in a condensation zone with a heat-exchange fluid to cool the gas whereupon the vapor condenses and is collected as condens... | 05/18/1982 |
